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Author SHA1 Message Date
Edward Z. Yang
678a593e62 Release 2.1.0, merged in 1313 to HEAD.
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/branches/strict@1352 48356398-32a2-884e-a903-53898d9a118a
2007-08-03 03:20:49 +00:00
Edward Z. Yang
495164e938 Release 2.0.1, merged in 1181 to HEAD.
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/branches/strict@1255 48356398-32a2-884e-a903-53898d9a118a
2007-06-27 14:30:45 +00:00
Edward Z. Yang
42858ad594 Finish up with a few more files that didn't get updated. Hrmm..
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/branches/strict@1181 48356398-32a2-884e-a903-53898d9a118a
2007-06-21 00:53:09 +00:00
Edward Z. Yang
5ecb11f19a Tack on missing basic smoketests.
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/branches/strict@1180 48356398-32a2-884e-a903-53898d9a118a
2007-06-21 00:42:00 +00:00
Edward Z. Yang
0101311193 Release 2.0.0, merged in 1026 to HEAD.
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/branches/strict@1179 48356398-32a2-884e-a903-53898d9a118a
2007-06-21 00:36:12 +00:00
Edward Z. Yang
c35eb3e95f Release 1.6.1, merged in 931 to HEAD.
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/branches/strict@1026 48356398-32a2-884e-a903-53898d9a118a
2007-05-05 20:49:49 +00:00
Edward Z. Yang
b829e76bbf Release 1.6.0, merged in r875-930.
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/branches/strict@931 48356398-32a2-884e-a903-53898d9a118a
2007-04-02 03:09:23 +00:00
Edward Z. Yang
e967680250 Really release 1.5.0.
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/branches/strict@876 48356398-32a2-884e-a903-53898d9a118a
2007-03-24 02:19:11 +00:00
Edward Z. Yang
dd2fd06591 Release 1.5.0, merged in r688-867.
- LanguageFactory::instance() declared static
- HTMLModuleManagerTest pass by reference bug fixed, merge back into trunk scheduled

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/branches/strict@869 48356398-32a2-884e-a903-53898d9a118a
2007-03-24 01:04:06 +00:00
Edward Z. Yang
cec7a1c087 Release 1.4.1, merged in 685-687.
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/branches/strict@689 48356398-32a2-884e-a903-53898d9a118a
2007-01-21 21:54:03 +00:00
Edward Z. Yang
c2d3d5b859 Release 1.4.0.
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/branches/strict@682 48356398-32a2-884e-a903-53898d9a118a
2007-01-21 17:45:33 +00:00
Edward Z. Yang
9a84e11f34 Merge in r657-674, prompted by near release of 1.4.0.
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/branches/strict@675 48356398-32a2-884e-a903-53898d9a118a
2007-01-21 16:07:36 +00:00
Edward Z. Yang
37ea1673dd Merge in r649-656, prompted by changing two of Encoder's functions to static.
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/branches/strict@657 48356398-32a2-884e-a903-53898d9a118a
2007-01-19 02:28:53 +00:00
Edward Z. Yang
5395d8b4bd Renamed remotely
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/branches/strict@649 48356398-32a2-884e-a903-53898d9a118a
2007-01-16 22:03:54 +00:00
Edward Z. Yang
c980e76197 Moved remotely
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/branches/trunk-strict@648 48356398-32a2-884e-a903-53898d9a118a
2007-01-16 22:03:00 +00:00
Edward Z. Yang
2bf912d528 Commit strict version of HTML Purifier.
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk-strict@647 48356398-32a2-884e-a903-53898d9a118a
2007-01-16 21:59:29 +00:00
764 changed files with 11709 additions and 37752 deletions

1
.gitattributes vendored
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@@ -1 +0,0 @@
configdoc/usage.xml -crlf

20
.gitignore vendored
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@@ -1,20 +0,0 @@
tags
conf/
test-settings.php
config-schema.php
library/HTMLPurifier/DefinitionCache/Serializer/*/
library/standalone/
library/HTMLPurifier.standalone.php
library/HTMLPurifier*.tgz
library/package*.xml
smoketests/test-schema.html
configdoc/*.html
configdoc/configdoc.xml
docs/doxygen*
*.phpt.diff
*.phpt.exp
*.phpt.log
*.phpt.out
*.phpt.php
*.phpt.skip.php
*.htmlt.ini

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@@ -5,5 +5,3 @@ Almost everything written by Edward Z. Yang (Ambush Commander). Lots of thanks
to the DevNetwork Community for their help (see docs/ref-devnetwork.html for
more details), Feyd especially (namely IPv6 and optimization). Thanks to RSnake
for letting me package his fantastic XSS cheatsheet for a smoketest.
vim: et sw=4 sts=4

1173
Doxyfile

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13
FOCUS
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@@ -1,13 +0,0 @@
9 - Major security fixes
[ Appendix A: Release focus IDs ]
0 - N/A
1 - Initial freshmeat announcement
2 - Documentation
3 - Code cleanup
4 - Minor feature enhancements
5 - Major feature enhancements
6 - Minor bugfixes
7 - Major bugfixes
8 - Minor security fixes
9 - Major security fixes

345
INSTALL
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@@ -1,56 +1,64 @@
Install
How to install HTML Purifier
HTML Purifier is designed to run out of the box, so actually using the
library is extremely easy. (Although... if you were looking for a
step-by-step installation GUI, you've downloaded the wrong software!)
While the impatient can get going immediately with some of the sample
code at the bottom of this library, it's well worth reading this entire
document--most of the other documentation assumes that you are familiar
with these contents.
HTML Purifier is designed to run out of the box, so actually using the library
is extremely easy. (Although, if you were looking for a step-by-step
installation GUI, you've come to the wrong place!) The impatient can scroll
down to the bottom of this INSTALL document to see the code, but you really
should make sure a few things are properly done.
---------------------------------------------------------------------------
1. Compatibility
HTML Purifier is PHP 5 only, and is actively tested from PHP 5.0.5 and
up. It has no core dependencies with other libraries. PHP
4 support was deprecated on December 31, 2007 with HTML Purifier 3.0.0.
HTML Purifier works in both PHP 4 and PHP 5, from PHP 4.3.2 and up. It has no
core dependencies with other libraries.
These optional extensions can enhance the capabilities of HTML Purifier:
* iconv : Converts text to and from non-UTF-8 encodings
* bcmath : Used for unit conversion and imagecrash protection
* tidy : Used for pretty-printing HTML
Optional extensions are iconv (usually installed) and tidy (also common).
If you use UTF-8 and don't plan on pretty-printing HTML, you can get away with
not having either of these extensions.
---------------------------------------------------------------------------
2. Reconnaissance
A big plus of HTML Purifier is its inerrant support of standards, so
your web-pages should be standards-compliant. (They should also use
semantic markup, but that's another issue altogether, one HTML Purifier
cannot fix without reading your mind.)
2. Including the library
HTML Purifier can process these doctypes:
Simply use:
require_once '/path/to/library/HTMLPurifier.auto.php';
...and you're good to go. Since HTML Purifier's codebase is fairly
large, I recommend only including HTML Purifier when you need it.
If you don't like your include_path to be fiddled around with, simply set
HTML Purifier's library/ directory to the include path yourself and then:
require_once 'HTMLPurifier.php';
Only the contents in the library/ folder are necessary, so you can remove
everything else when using HTML Purifier in a production environment.
3. Preparing the proper output environment
HTML Purifier is all about web-standards, so accordingly your webpages should
be standards compliant. HTML Purifier can deal with these doctypes:
* XHTML 1.0 Transitional (default)
* XHTML 1.0 Strict
* HTML 4.01 Transitional
* HTML 4.01 Strict
* XHTML 1.1
* XHTML 1.1 (sans Ruby)
...and these character encodings:
* UTF-8 (default)
* Any encoding iconv supports (with crippled internationalization support)
* Any encoding iconv supports (support is crippled for i18n though)
These defaults reflect what my choices would be if I were authoring an
HTML document, however, what you choose depends on the nature of your
codebase. If you don't know what doctype you are using, you can determine
the doctype from this identifier at the top of your source code:
The defaults are there for a reason: they are best-practice choices that
should not be changed lightly. For those of you in the dark, you can determine
the doctype from this code in your HTML documents:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
@@ -59,156 +67,23 @@ the doctype from this identifier at the top of your source code:
<meta http-equiv="Content-type" content="text/html;charset=ENCODING">
If the character encoding declaration is missing, STOP NOW, and
read 'docs/enduser-utf8.html' (web accessible at
http://htmlpurifier.org/docs/enduser-utf8.html). In fact, even if it is
present, read this document anyway, as many websites specify their
document's character encoding incorrectly.
For legacy codebases these declarations may be missing. If that is the case,
STOP, and read docs/enduser-utf8.html
---------------------------------------------------------------------------
3. Including the library
The procedure is quite simple:
require_once '/path/to/library/HTMLPurifier.auto.php';
This will setup an autoloader, so the library's files are only included
when you use them.
Only the contents in the library/ folder are necessary, so you can remove
everything else when using HTML Purifier in a production environment.
If you installed HTML Purifier via PEAR, all you need to do is:
require_once 'HTMLPurifier.auto.php';
Please note that the usual PEAR practice of including just the classes you
want will not work with HTML Purifier's autoloading scheme.
Advanced users, read on; other users can skip to section 4.
Autoload compatibility
----------------------
HTML Purifier attempts to be as smart as possible when registering an
autoloader, but there are some cases where you will need to change
your own code to accomodate HTML Purifier. These are those cases:
PHP VERSION IS LESS THAN 5.1.2, AND YOU'VE DEFINED __autoload
Because spl_autoload_register() doesn't exist in early versions
of PHP 5, HTML Purifier has no way of adding itself to the autoload
stack. Modify your __autoload function to test
HTMLPurifier_Bootstrap::autoload($class)
For example, suppose your autoload function looks like this:
function __autoload($class) {
require str_replace('_', '/', $class) . '.php';
return true;
}
A modified version with HTML Purifier would look like this:
function __autoload($class) {
if (HTMLPurifier_Bootstrap::autoload($class)) return true;
require str_replace('_', '/', $class) . '.php';
return true;
}
Note that there *is* some custom behavior in our autoloader; the
original autoloader in our example would work for 99% of the time,
but would fail when including language files.
AN __autoload FUNCTION IS DECLARED AFTER OUR AUTOLOADER IS REGISTERED
spl_autoload_register() has the curious behavior of disabling
the existing __autoload() handler. Users need to explicitly
spl_autoload_register('__autoload'). Because we use SPL when it
is available, __autoload() will ALWAYS be disabled. If __autoload()
is declared before HTML Purifier is loaded, this is not a problem:
HTML Purifier will register the function for you. But if it is
declared afterwards, it will mysteriously not work. This
snippet of code (after your autoloader is defined) will fix it:
spl_autoload_register('__autoload')
Users should also be on guard if they use a version of PHP previous
to 5.1.2 without an autoloader--HTML Purifier will define __autoload()
for you, which can collide with an autoloader that was added by *you*
later.
For better performance
----------------------
Opcode caches, which greatly speed up PHP initialization for scripts
with large amounts of code (HTML Purifier included), don't like
autoloaders. We offer an include file that includes all of HTML Purifier's
files in one go in an opcode cache friendly manner:
// If /path/to/library isn't already in your include path, uncomment
// the below line:
// require '/path/to/library/HTMLPurifier.path.php';
require 'HTMLPurifier.includes.php';
Optional components still need to be included--you'll know if you try to
use a feature and you get a class doesn't exists error! The autoloader
can be used in conjunction with this approach to catch classes that are
missing. Simply add this afterwards:
require 'HTMLPurifier.autoload.php';
Standalone version
------------------
HTML Purifier has a standalone distribution; you can also generate
a standalone file from the full version by running the script
maintenance/generate-standalone.php . The standalone version has the
benefit of having most of its code in one file, so parsing is much
faster and the library is easier to manage.
If HTMLPurifier.standalone.php exists in the library directory, you
can use it like this:
require '/path/to/HTMLPurifier.standalone.php';
This is equivalent to including HTMLPurifier.includes.php, except that
the contents of standalone/ will be added to your path. To override this
behavior, specify a new HTMLPURIFIER_PREFIX where standalone files can
be found (usually, this will be one directory up, the "true" library
directory in full distributions). Don't forget to set your path too!
The autoloader can be added to the end to ensure the classes are
loaded when necessary; otherwise you can manually include them.
To use the autoloader, use this:
require 'HTMLPurifier.autoload.php';
For advanced users
------------------
HTMLPurifier.auto.php performs a number of operations that can be done
individually. These are:
HTMLPurifier.path.php
Puts /path/to/library in the include path. For high performance,
this should be done in php.ini.
HTMLPurifier.autoload.php
Registers our autoload handler HTMLPurifier_Bootstrap::autoload($class).
You can do these operations by yourself--in fact, you must modify your own
autoload handler if you are using a version of PHP earlier than PHP 5.1.2
(See "Autoload compatibility" above).
You may currently be vulnerable to XSS and other security threats, and HTML
Purifier won't be able to fix that.
---------------------------------------------------------------------------
4. Configuration
HTML Purifier is designed to run out-of-the-box, but occasionally HTML
Purifier needs to be told what to do. If you answer no to any of these
questions, read on; otherwise, you can skip to the next section (or, if you're
Purifier needs to be told what to do. If you answered no to any of these
questions, read on, otherwise, you can skip to the next section (or, if you're
into configuring things just for the heck of it, skip to 4.3).
* Am I using UTF-8?
@@ -220,6 +95,7 @@ object and read on:
$config = HTMLPurifier_Config::createDefault();
4.1. Setting a different character encoding
You really shouldn't use any other encoding except UTF-8, especially if you
@@ -231,12 +107,12 @@ HTML Purifier uses iconv to support other character encodings, as such,
any encoding that iconv supports <http://www.gnu.org/software/libiconv/>
HTML Purifier supports with this code:
$config->set('Core.Encoding', /* put your encoding here */);
$config->set('Core', 'Encoding', /* put your encoding here */);
An example usage for Latin-1 websites (the most common encoding for English
websites):
$config->set('Core.Encoding', 'ISO-8859-1');
$config->set('Core', 'Encoding', 'ISO-8859-1');
Note that HTML Purifier's support for non-Unicode encodings is crippled by the
fact that any character not supported by that encoding will be silently
@@ -246,15 +122,20 @@ but please be cognizant of the issues the "solution" creates (for this
reason, I do not include the solution in this document).
4.2. Setting a different doctype
For those of you using HTML 4.01 Transitional, you can disable
XHTML output like this:
$config->set('HTML.Doctype', 'HTML 4.01 Transitional');
$config->set('HTML', 'Doctype', 'HTML 4.01 Transitional');
Other supported doctypes include:
* HTML 4.01 Strict
* HTML 4.01 Transitional
* XHTML 1.0 Strict
@@ -262,6 +143,7 @@ Other supported doctypes include:
* XHTML 1.1
4.3. Other settings
There are more configuration directives which can be read about
@@ -271,24 +153,55 @@ your code. Some of the more interesting ones are configurable at the
demo <http://htmlpurifier.org/demo.php> and are well worth looking into
for your own system.
For example, you can fine tune allowed elements and attributes, convert
relative URLs to absolute ones, and even autoparagraph input text! These
are, respectively, %HTML.Allowed, %URI.MakeAbsolute and %URI.Base, and
%AutoFormat.AutoParagraph. The %Namespace.Directive naming convention
translates to:
$config->set('Namespace.Directive', $value);
E.g.
$config->set('HTML.Allowed', 'p,b,a[href],i');
$config->set('URI.Base', 'http://www.example.com');
$config->set('URI.MakeAbsolute', true);
$config->set('AutoFormat.AutoParagraph', true);
---------------------------------------------------------------------------
5. Caching
5. Using the code
The interface is mind-numbingly simple:
$purifier = new HTMLPurifier();
$clean_html = $purifier->purify( $dirty_html );
...or, if you're using the configuration object:
$purifier = new HTMLPurifier($config);
$clean_html = $purifier->purify( $dirty_html );
That's it! For more examples, check out docs/examples/ (they aren't very
different though). Also, docs/enduser-slow.html gives advice on what to
do if HTML Purifier is slowing down your application.
6. Quick install
First, make sure library/HTMLPurifier/DefinitionCache/Serializer is
writable by the webserver (see Section 7: Caching below for details).
If your website is in UTF-8 and XHTML Transitional, use this code:
<?php
require_once '/path/to/htmlpurifier/library/HTMLPurifier.auto.php';
$purifier = new HTMLPurifier();
$clean_html = $purifier->purify($dirty_html);
?>
If your website is in a different encoding or doctype, use this code:
<?php
require_once '/path/to/htmlpurifier/library/HTMLPurifier.auto.php';
$config = HTMLPurifier_Config::createDefault();
$config->set('Core', 'Encoding', 'ISO-8859-1'); // replace with your encoding
$config->set('HTML', 'Doctype', 'HTML 4.01 Transitional'); // replace with your doctype
$purifier = new HTMLPurifier($config);
$clean_html = $purifier->purify($dirty_html);
?>
7. Caching
HTML Purifier generates some cache files (generally one or two) to speed up
its execution. For maximum performance, make sure that
@@ -318,56 +231,8 @@ If you are unable or unwilling to give write permissions to the cache
directory, you can either disable the cache (and suffer a performance
hit):
$config->set('Core.DefinitionCache', null);
$config->set('Core', 'DefinitionCache', null);
Or move the cache directory somewhere else (no trailing slash):
$config->set('Cache.SerializerPath', '/home/user/absolute/path');
---------------------------------------------------------------------------
6. Using the code
The interface is mind-numbingly simple:
$purifier = new HTMLPurifier();
$clean_html = $purifier->purify( $dirty_html );
...or, if you're using the configuration object:
$purifier = new HTMLPurifier($config);
$clean_html = $purifier->purify( $dirty_html );
That's it! For more examples, check out docs/examples/ (they aren't very
different though). Also, docs/enduser-slow.html gives advice on what to
do if HTML Purifier is slowing down your application.
---------------------------------------------------------------------------
7. Quick install
First, make sure library/HTMLPurifier/DefinitionCache/Serializer is
writable by the webserver (see Section 5: Caching above for details).
If your website is in UTF-8 and XHTML Transitional, use this code:
<?php
require_once '/path/to/htmlpurifier/library/HTMLPurifier.auto.php';
$purifier = new HTMLPurifier();
$clean_html = $purifier->purify($dirty_html);
?>
If your website is in a different encoding or doctype, use this code:
<?php
require_once '/path/to/htmlpurifier/library/HTMLPurifier.auto.php';
$config = HTMLPurifier_Config::createDefault();
$config->set('Core.Encoding', 'ISO-8859-1'); // replace with your encoding
$config->set('HTML.Doctype', 'HTML 4.01 Transitional'); // replace with your doctype
$purifier = new HTMLPurifier($config);
$clean_html = $purifier->purify($dirty_html);
?>
vim: et sw=4 sts=4
$config->set('Cache', 'SerializerPath', '/home/user/absolute/path');

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@@ -17,10 +17,10 @@ ce document pour quelques choses.
1. Compatibilité
HTML Purifier fonctionne dans PHP 5. PHP 5.0.5 est le dernier
HTML Purifier fonctionne dans PHP 4 et PHP 5. PHP 4.3.2 est le dernier
version que je le testais. Il ne dépend de les autre librairies.
Les extensions optionnel est iconv (en général déjà installer) et
Les extensions optionnel est iconv (en général déjà installer) et
tidy (répandu aussi). Si vous utilisez UTF-8 et ne voulez pas
l'indentation, vous pouvez utiliser HTML Purifier sans ces extensions.
@@ -34,21 +34,25 @@ Utilisez:
...quand vous devez utiliser HTML Purifier (ne inclure pas quand vous
ne devez pas, parce que HTML Purifier est trés grand.)
HTML Purifier utilise 'autoload'. Si vous avez définu la fonction
__autoload, vous doivez ajoute cet programme:
Si vous n'aime pas que HTML Purifier change vos include_path, on peut
change vos include_path, et:
spl_autoload_register('__autoload')
require_once 'HTMLPurifier.php';
Plus d'information est dans le document 'INSTALL'.
Seuleument les contents dans library/ est essentiel; vous peut enlever
les autre fichiers quand vous est dans une atmosphère professionnel.
3. Installation vite
[En cours de construction]
6. Installation vite
Si votre site web est en UTF-8 et XHTML Transitional, utilisez:
<?php
require_once '/path/to/htmlpurifier/library/HTMLPurifier.auto.php';
$purificateur = new HTMLPurifier();
$html_propre = $purificateur->purify($html_salle);
?>
@@ -57,13 +61,11 @@ Sinon, utilisez:
<?php
require_once '/path/to/htmlpurifier/library/HTMLPurifier.auto.php';
$config = HTMLPurifier_Config::createDefault();
$config->set('Core', 'Encoding', 'ISO-8859-1'); //remplacez avec votre encoding
$config->set('Core', 'XHTML', true); //remplacez avec false si HTML 4.01
$purificateur = new HTMLPurifier($config);
$html_propre = $purificateur->purify($html_salle);
?>
vim: et sw=4 sts=4
?>

View File

@@ -146,7 +146,7 @@ such a program is covered only if its contents constitute a work based
on the Library (independent of the use of the Library in a tool for
writing it). Whether that is true depends on what the Library does
and what the program that uses the Library does.
1. You may copy and distribute verbatim copies of the Library's
complete source code as you receive it, in any medium, provided that
you conspicuously and appropriately publish on each copy an
@@ -501,4 +501,4 @@ necessary. Here is a sample; alter the names:
That's all there is to it!
vim: et sw=4 sts=4

551
NEWS
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@@ -9,547 +9,6 @@ NEWS ( CHANGELOG and HISTORY ) HTMLPurifier
. Internal change
==========================
4.1.0, released 2010-04-26
! Support proprietary height attribute on table element
! Support YouTube slideshows that contain /cp/ in their URL.
! Support for data: URI scheme; not enabled by default, add it using
%URI.AllowedSchemes
! Support flashvars when using %HTML.SafeObject and %HTML.SafeEmbed.
! Support for Internet Explorer compatibility with %HTML.SafeObject
using %Output.FlashCompat.
! Handle <ol><ol> properly, by inserting the necessary <li> tag.
- Always quote the insides of url(...) in CSS.
4.0.0, released 2009-07-07
# APIs for ConfigSchema subsystem have substantially changed. See
docs/dev-config-bcbreaks.txt for details; in essence, anything that
had both namespace and directive now have a single unified key.
# Some configuration directives were renamed, specifically:
%AutoFormatParam.PurifierLinkifyDocURL -> %AutoFormat.PurifierLinkify.DocURL
%FilterParam.ExtractStyleBlocksEscaping -> %Filter.ExtractStyleBlocks.Escaping
%FilterParam.ExtractStyleBlocksScope -> %Filter.ExtractStyleBlocks.Scope
%FilterParam.ExtractStyleBlocksTidyImpl -> %Filter.ExtractStyleBlocks.TidyImpl
As usual, the old directive names will still work, but will throw E_NOTICE
errors.
# The allowed values for class have been relaxed to allow all of CDATA for
doctypes that are not XHTML 1.1 or XHTML 2.0. For old behavior, set
%Attr.ClassUseCDATA to false.
# Instead of appending the content model to an old content model, a blank
element will replace the old content model. You can use #SUPER to get
the old content model.
! More robust support for name="" and id=""
! HTMLPurifier_Config::inherit($config) allows you to inherit one
configuration, and have changes to that configuration be propagated
to all of its children.
! Implement %HTML.Attr.Name.UseCDATA, which relaxes validation rules on
the name attribute when set. Use with care. Thanks Ian Cook for
sponsoring.
! Implement %AutoFormat.RemoveEmpty.RemoveNbsp, which removes empty
tags that contain non-breaking spaces as well other whitespace. You
can also modify which tags should have &nbsp; maintained with
%AutoFormat.RemoveEmpty.RemoveNbsp.Exceptions.
! Implement %Attr.AllowedClasses, which allows administrators to restrict
classes users can use to a specified finite set of classes, and
%Attr.ForbiddenClasses, which is the logical inverse.
! You can now maintain your own configuration schema directories by
creating a config-schema.php file or passing an extra argument. Check
docs/dev-config-schema.html for more details.
! Added HTMLPurifier_Config->serialize() method, which lets you save away
your configuration in a compact serial file, which you can unserialize
and use directly without having to go through the overhead of setup.
- Fix bug where URIDefinition would not get cleared if it's directives got
changed.
- Fix fatal error in HTMLPurifier_Encoder on certain platforms (probably NetBSD 5.0)
- Fix bug in Linkify autoformatter involving <a><span>http://foo</span></a>
- Make %URI.Munge not apply to links that have the same host as your host.
- Prevent stray </body> tag from truncating output, if a second </body>
is present.
. Created script maintenance/rename-config.php for renaming a configuration
directive while maintaining its alias. This script does not change source code.
. Implement namespace locking for definition construction, to prevent
bugs where a directive is used for definition construction but is not
used to construct the cache hash.
3.3.0, released 2009-02-16
! Implement CSS property 'overflow' when %CSS.AllowTricky is true.
! Implement generic property list classess
- Fix bug with testEncodingSupportsASCII() algorithm when iconv() implementation
does not do the "right thing" with characters not supported in the output
set.
- Spellcheck UTF-8: The Secret To Character Encoding
- Fix improper removal of the contents of elements with only whitespace. Thanks
Eric Wald for reporting.
- Fix broken test suite in versions of PHP without spl_autoload_register()
- Fix degenerate case with YouTube filter involving double hyphens.
Thanks Pierre Attar for reporting.
- Fix YouTube rendering problem on certain versions of Firefox.
- Fix CSSDefinition Printer problems with decorators
- Add text parameter to unit tests, forces text output
. Add verbose mode to command line test runner, use (--verbose)
. Turn on unit tests for UnitConverter
. Fix missing version number in configuration %Attr.DefaultImageAlt (added 3.2.0)
. Fix newline errors that caused spurious failures when CRLF HTML Purifier was
tested on Linux.
. Removed trailing whitespace from all text files, see
remote-trailing-whitespace.php maintenance script.
. Convert configuration to use property list backend.
3.2.0, released 2008-10-31
# Using %Core.CollectErrors forces line number/column tracking on, whereas
previously you could theoretically turn it off.
# HTMLPurifier_Injector->notifyEnd() is formally deprecated. Please
use handleEnd() instead.
! %Output.AttrSort for when you need your attributes in alphabetical order to
deal with a bug in FCKEditor. Requested by frank farmer.
! Enable HTML comments when %HTML.Trusted is on. Requested by Waldo Jaquith.
! Proper support for name attribute. It is now allowed and equivalent to the id
attribute in a and img tags, and is only converted to id when %HTML.TidyLevel
is heavy (for all doctypes).
! %AutoFormat.RemoveEmpty to remove some empty tags from documents. Please don't
use on hand-written HTML.
! Add error-cases for unsupported elements in MakeWellFormed. This enables
the strategy to be used, standalone, on untrusted input.
! %Core.AggressivelyFixLt is on by default. This causes more sensible
processing of left angled brackets in smileys and other whatnot.
! Test scripts now have a 'type' parameter, which lets you say 'htmlpurifier',
'phpt', 'vtest', etc. in order to only execute those tests. This supercedes
the --only-phpt parameter, although for backwards-compatibility the flag
will still work.
! AutoParagraph auto-formatter will now preserve double-newlines upon output.
Users who are not performing inbound filtering, this may seem a little
useless, but as a bonus, the test suite and handling of edge cases is also
improved.
! Experimental implementation of forms for %HTML.Trusted
! Track column numbers when maintain line numbers is on
! Proprietary 'background' attribute on table-related elements converted into
corresponding CSS. Thanks Fusemail for sponsoring this feature!
! Add forward(), forwardUntilEndToken(), backward() and current() to Injector
supertype.
! HTMLPurifier_Injector->handleEnd() permits modification to end tokens. The
time of operation varies slightly from notifyEnd() as *all* end tokens are
processed by the injector before they are subject to the well-formedness rules.
! %Attr.DefaultImageAlt allows overriding default behavior of setting alt to
basename of image when not present.
! %AutoFormat.DisplayLinkURI neuters <a> tags into plain text URLs.
- Fix two bugs in %URI.MakeAbsolute; one involving empty paths in base URLs,
the other involving an undefined $is_folder error.
- Throw error when %Core.Encoding is set to a spurious value. Previously,
this errored silently and returned false.
- Redirected stderr to stdout for flush error output.
- %URI.DisableExternal will now use the host in %URI.Base if %URI.Host is not
available.
- Do not re-munge URL if the output URL has the same host as the input URL.
Requested by Chris.
- Fix error in documentation regarding %Filter.ExtractStyleBlocks
- Prevent <![CDATA[<body></body>]]> from triggering %Core.ConvertDocumentToFragment
- Fix bug with inline elements in blockquotes conflicting with strict doctype
- Detect if HTML support is disabled for DOM by checking for loadHTML() method.
- Fix bug where dots and double-dots in absolute URLs without hostname were
not collapsed by URIFilter_MakeAbsolute.
- Fix bug with anonymous modules operating on SafeEmbed or SafeObject elements
by reordering their addition.
- Will now throw exception on many error conditions during lexer creation; also
throw an exception when MaintainLineNumbers is true, but a non-tracksLineNumbers
is being used.
- Detect if domxml extension is loaded, and use DirectLEx accordingly.
- Improve handling of big numbers with floating point arithmetic in UnitConverter.
Reported by David Morton.
. Strategy_MakeWellFormed now operates in-place, saving memory and allowing
for more interesting filter-backtracking
. New HTMLPurifier_Injector->rewind() functionality, allows injectors to rewind
index to reprocess tokens.
. StringHashParser now allows for multiline sections with "empty" content;
previously the section would remain undefined.
. Added --quick option to multitest.php, which tests only the most recent
release for each series.
. Added --distro option to multitest.php, which accepts either 'normal' or
'standalone'. This supercedes --exclude-normal and --exclude-standalone
3.1.1, released 2008-06-19
# %URI.Munge now, by default, does not munge resources (for example, <img src="">)
In order to enable this again, please set %URI.MungeResources to true.
! More robust imagecrash protection with height/width CSS with %CSS.MaxImgLength,
and height/width HTML with %HTML.MaxImgLength.
! %URI.MungeSecretKey for secure URI munging. Thanks Chris
for sponsoring this feature. Check out the corresponding documentation
for details. (Att Nightly testers: The API for this feature changed before
the general release. Namely, rename your directives %URI.SecureMungeSecretKey =>
%URI.MungeSecretKey and and %URI.SecureMunge => %URI.Munge)
! Implemented post URI filtering. Set member variable $post to true to set
a URIFilter as such.
! Allow modules to define injectors via $info_injector. Injectors are
automatically disabled if injector's needed elements are not found.
! Support for "safe" objects added, use %HTML.SafeObject and %HTML.SafeEmbed.
Thanks Chris for sponsoring. If you've been using ad hoc code from the
forums, PLEASE use this instead.
! Added substitutions for %e, %n, %a and %p in %URI.Munge (in order,
embedded, tag name, attribute name, CSS property name). See %URI.Munge
for more details. Requested by Jochem Blok.
- Disable percent height/width attributes for img.
- AttrValidator operations are now atomic; updates to attributes are not
manifest in token until end of operations. This prevents naughty internal
code from directly modifying CurrentToken when they're not supposed to.
This semantics change was requested by frank farmer.
- Percent encoding checks enabled for URI query and fragment
- Fix stray backslashes in font-family; CSS Unicode character escapes are
now properly resolved (although *only* in font-family). Thanks Takeshi Terada
for reporting.
- Improve parseCDATA algorithm to take into account newline normalization
- Account for browser confusion between Yen character and backslash in
Shift_JIS encoding. This fix generalizes to any other encoding which is not
a strict superset of printable ASCII. Thanks Takeshi Terada for reporting.
- Fix missing configuration parameter in Generator calls. Thanks vs for the
partial patch.
- Improved adherence to Unicode by checking for non-character codepoints.
Thanks Geoffrey Sneddon for reporting. This may result in degraded
performance for extremely large inputs.
- Allow CSS property-value pair ''text-decoration: none''. Thanks Jochem Blok
for reporting.
. Added HTMLPurifier_UnitConverter and HTMLPurifier_Length for convenient
handling of CSS-style lengths. HTMLPurifier_AttrDef_CSS_Length now uses
this class.
. API of HTMLPurifier_AttrDef_CSS_Length changed from __construct($disable_negative)
to __construct($min, $max). __construct(true) is equivalent to
__construct('0').
. Added HTMLPurifier_AttrDef_Switch class
. Rename HTMLPurifier_HTMLModule_Tidy->construct() to setup() and bubble method
up inheritance hierarchy to HTMLPurifier_HTMLModule. All HTMLModules
get this called with the configuration object. All modules now
use this rather than __construct(), although legacy code using constructors
will still work--the new format, however, lets modules access the
configuration object for HTML namespace dependant tweaks.
. AttrDef_HTML_Pixels now takes a single construction parameter, pixels.
. ConfigSchema data-structure heavily optimized; on average it uses a third
the memory it did previously. The interface has changed accordingly,
consult changes to HTMLPurifier_Config for details.
. Variable parsing types now are magic integers instead of strings
. Added benchmark for ConfigSchema
. HTMLPurifier_Generator requires $config and $context parameters. If you
don't know what they should be, use HTMLPurifier_Config::createDefault()
and new HTMLPurifier_Context().
. Printers now properly distinguish between output configuration, and
target configuration. This is not applicable to scripts using
the Printers for HTML Purifier related tasks.
. HTML/CSS Printers must be primed with prepareGenerator($gen_config), otherwise
fatal errors will ensue.
. URIFilter->prepare can return false in order to abort loading of the filter
. Factory for AttrDef_URI implemented, URI#embedded to indicate URI that embeds
an external resource.
. %URI.Munge functionality factored out into a post-filter class.
. Added CurrentCSSProperty context variable during CSS validation
3.1.0, released 2008-05-18
# Unnecessary references to objects (vestiges of PHP4) removed from method
signatures. The following methods do not need references when assigning from
them and will result in E_STRICT errors if you try:
+ HTMLPurifier_Config->get*Definition() [* = HTML, CSS]
+ HTMLPurifier_ConfigSchema::instance()
+ HTMLPurifier_DefinitionCacheFactory::instance()
+ HTMLPurifier_DefinitionCacheFactory->create()
+ HTMLPurifier_DoctypeRegistry->register()
+ HTMLPurifier_DoctypeRegistry->get()
+ HTMLPurifier_HTMLModule->addElement()
+ HTMLPurifier_HTMLModule->addBlankElement()
+ HTMLPurifier_LanguageFactory::instance()
# Printer_ConfigForm's get*() functions were static-ified
# %HTML.ForbiddenAttributes requires attribute declarations to be in the
form of tag@attr, NOT tag.attr (which will throw an error and won't do
anything). This is for forwards compatibility with XML; you'd do best
to migrate an %HTML.AllowedAttributes directives to this syntax too.
! Allow index to be false for config from form creation
! Added HTMLPurifier::VERSION constant
! Commas, not dashes, used for serializer IDs. This change is forwards-compatible
and allows for version numbers like "3.1.0-dev".
! %HTML.Allowed deals gracefully with whitespace anywhere, anytime!
! HTML Purifier's URI handling is a lot more robust, with much stricter
validation checks and better percent encoding handling. Thanks Gareth Heyes
for indicating security vulnerabilities from lax percent encoding.
! Bootstrap autoloader deals more robustly with classes that don't exist,
preventing class_exists($class, true) from barfing.
- InterchangeBuilder now alphabetizes its lists
- Validation error in configdoc output fixed
- Iconv and other encoding errors muted even with custom error handlers that
do not honor error_reporting
- Add protection against imagecrash attack with CSS height/width
- HTMLPurifier::instance() created for consistency, is equivalent to getInstance()
- Fixed and revamped broken ConfigForm smoketest
- Bug with bool/null fields in Printer_ConfigForm fixed
- Bug with global forbidden attributes fixed
- Improved error messages for allowed and forbidden HTML elements and attributes
- Missing (or null) in configdoc documentation restored
- If DOM throws and exception during parsing with PH5P (occurs in newer versions
of DOM), HTML Purifier punts to DirectLex
- Fatal error with unserialization of ScriptRequired
- Created directories are now chmod'ed properly
- Fixed bug with fallback languages in LanguageFactory
- Standalone testing setup properly with autoload
. Out-of-date documentation revised
. UTF-8 encoding check optimization as suggested by Diego
. HTMLPurifier_Error removed in favor of exceptions
. More copy() function removed; should use clone instead
. More extensive unit tests for HTMLDefinition
. assertPurification moved to central harness
. HTMLPurifier_Generator accepts $config and $context parameters during
instantiation, not runtime
. Double-quotes outside of attribute values are now unescaped
3.1.0rc1, released 2008-04-22
# Autoload support added. Internal require_once's removed in favor of an
explicit require list or autoloading. To use HTML Purifier,
you must now either use HTMLPurifier.auto.php
or HTMLPurifier.includes.php; setting the include path and including
HTMLPurifier.php is insufficient--in such cases include HTMLPurifier.autoload.php
as well to register our autoload handler (or modify your autoload function
to check HTMLPurifier_Bootstrap::getPath($class)). You can also use
HTMLPurifier.safe-includes.php for a less performance friendly but more
user-friendly library load.
# HTMLPurifier_ConfigSchema static functions are officially deprecated. Schema
information is stored in the ConfigSchema directory, and the
maintenance/generate-schema-cache.php generates the schema.ser file, which
is now instantiated. Support for userland schema changes coming soon!
# HTMLPurifier_Config will now throw E_USER_NOTICE when you use a directive
alias; to get rid of these errors just modify your configuration to use
the new directive name.
# HTMLPurifier->addFilter is deprecated; built-in filters can now be
enabled using %Filter.$filter_name or by setting your own filters using
%Filter.Custom
# Directive-level safety properties superceded in favor of module-level
safety. Internal method HTMLModule->addElement() has changed, although
the externally visible HTMLDefinition->addElement has *not* changed.
! Extra utility classes for testing and non-library operations can
be found in extras/. Specifically, these are FSTools and ConfigDoc.
You may find a use for these in your own project, but right now they
are highly experimental and volatile.
! Integration with PHPT allows for automated smoketests
! Limited support for proprietary HTML elements, namely <marquee>, sponsored
by Chris. You can enable them with %HTML.Proprietary if your client
demands them.
! Support for !important CSS cascade modifier. By default, this will be stripped
from CSS, but you can enable it using %CSS.AllowImportant
! Support for display and visibility CSS properties added, set %CSS.AllowTricky
to true to use them.
! HTML Purifier now has its own Exception hierarchy under HTMLPurifier_Exception.
Developer error (not enduser error) can cause these to be triggered.
! Experimental kses() wrapper introduced with HTMLPurifier.kses.php
! Finally %CSS.AllowedProperties for tweaking allowed CSS properties without
mucking around with HTMLPurifier_CSSDefinition
! ConfigDoc output has been enhanced with version and deprecation info.
! %HTML.ForbiddenAttributes and %HTML.ForbiddenElements implemented.
- Autoclose now operates iteratively, i.e. <span><span><div> now has
both span tags closed.
- Various HTMLPurifier_Config convenience functions now accept another parameter
$schema which defines what HTMLPurifier_ConfigSchema to use besides the
global default.
- Fix bug with trusted script handling in libxml versions later than 2.6.28.
- Fix bug in ExtractStyleBlocks with comments in style tags
- Fix bug in comment parsing for DirectLex
- Flush output now displayed when in command line mode for unit tester
- Fix bug with rgb(0, 1, 2) color syntax with spaces inside shorthand syntax
- HTMLPurifier_HTMLDefinition->addAttribute can now be called multiple times
on the same element without emitting errors.
- Fixed fatal error in PH5P lexer with invalid tag names
. Plugins now get their own changelogs according to project conventions.
. Convert tokens to use instanceof, reducing memory footprint and
improving comparison speed.
. Dry runs now supported in SimpleTest; testing facilities improved
. Bootstrap class added for handling autoloading functionality
. Implemented recursive glob at FSTools->globr
. ConfigSchema now has instance methods for all corresponding define*
static methods.
. A couple of new historical maintenance scripts were added.
. HTMLPurifier/HTMLModule/Tidy/XHTMLAndHTML4.php split into two files
. tests/index.php can now be run from any directory.
. HTMLPurifier_Token subclasses split into seperate files
. HTMLPURIFIER_PREFIX now is defined in Bootstrap.php, NOT HTMLPurifier.php
. HTMLPURIFIER_PREFIX can now be defined outside of HTML Purifier
. New --php=php flag added, allows PHP executable to be specified (command
line only!)
. htmlpurifier_add_test() preferred method to translate test files in to
classes, because it handles PHPT files too.
. Debugger class is deprecated and will be removed soon.
. Command line argument parsing for testing scripts revamped, now --opt value
format is supported.
. Smoketests now cleanup after magic quotes
. Generator now can output comments (however, comments are still stripped
from HTML Purifier output)
. HTMLPurifier_ConfigSchema->validate() deprecated in favor of
HTMLPurifier_VarParser->parse()
. Integers auto-cast into float type by VarParser.
. HTMLPURIFIER_STRICT removed; no validation is performed on runtime, only
during cache generation
. Reordered script calls in maintenance/flush.php
. Command line scripts now honor exit codes
. When --flush fails in unit testers, abort tests and print message
. Improved documentation in docs/dev-flush.html about the maintenance scripts
. copy() methods removed in favor of clone keyword
3.0.0, released 2008-01-06
# HTML Purifier is PHP 5 only! The 2.1.x branch will be maintained
until PHP 4 is completely deprecated, but no new features will be added
to it.
+ Visibility declarations added
+ Constructor methods renamed to __construct()
+ PHP4 reference cruft removed (in progress)
! CSS properties are now case-insensitive
! DefinitionCacheFactory now can register new implementations
! New HTMLPurifier_Filter_ExtractStyleBlocks for extracting <style> from
documents and cleaning their contents up. Requires the CSSTidy library
<http://csstidy.sourceforge.net/>. You can access the blocks with the
'StyleBlocks' Context variable ($purifier->context->get('StyleBlocks')).
The output CSS can also be "scoped" for a specific element, use:
%Filter.ExtractStyleBlocksScope
! Experimental support for some proprietary CSS attributes allowed:
opacity (and all of the browser-specific equivalents) and scrollbar colors.
Enable by setting %CSS.Proprietary to true.
- Colors missing # but in hex form will be corrected
- CSS Number algorithm improved
- Unit testing and multi-testing now on steroids: command lines,
XML output, and other goodies now added.
. Unit tests for Injector improved
. New classes:
+ HTMLPurifier_AttrDef_CSS_AlphaValue
+ HTMLPurifier_AttrDef_CSS_Filter
. Multitest now has a file docblock
2.1.3, released 2007-11-05
! tests/multitest.php allows you to test multiple versions by running
tests/index.php through multiple interpreters using `phpv` shell
script (you must provide this script!)
- Fixed poor include ordering for Email URI AttrDefs, causes fatal errors
on some systems.
- Injector algorithm further refined: off-by-one error regarding skip
counts for dormant injectors fixed
- Corrective blockquote definition now enabled for HTML 4.01 Strict
- Fatal error when <img> tag (or any other element with required attributes)
has 'id' attribute fixed, thanks NykO18 for reporting
- Fix warning emitted when a non-supported URI scheme is passed to the
MakeAbsolute URIFilter, thanks NykO18 (again)
- Further refine AutoParagraph injector. Behavior inside of elements
allowing paragraph tags clarified: only inline content delimeted by
double newlines (not block elements) are paragraphed.
- Buggy treatment of end tags of elements that have required attributes
fixed (does not manifest on default tag-set)
- Spurious internal content reorganization error suppressed
- HTMLDefinition->addElement now returns a reference to the created
element object, as implied by the documentation
- Phorum mod's HTML Purifier help message expanded (unreleased elsewhere)
- Fix a theoretical class of infinite loops from DirectLex reported
by Nate Abele
- Work around unnecessary DOMElement type-cast in PH5P that caused errors
in PHP 5.1
- Work around PHP 4 SimpleTest lack-of-error complaining for one-time-only
HTMLDefinition errors, this may indicate problems with error-collecting
facilities in PHP 5
- Make ErrorCollectorEMock work in both PHP 4 and PHP 5
- Make PH5P work with PHP 5.0 by removing unnecessary array parameter typedef
. %Core.AcceptFullDocuments renamed to %Core.ConvertDocumentToFragment
to better communicate its purpose
. Error unit tests can now specify the expectation of no errors. Future
iterations of the harness will be extremely strict about what errors
are allowed
. Extend Injector hooks to allow for more powerful injector routines
. HTMLDefinition->addBlankElement created, as according to the HTMLModule
method
. Doxygen configuration file updated, with minor improvements
. Test runner now checks for similarly named files in conf/ directory too.
. Minor cosmetic change to flush-definition-cache.php: trailing newline is
outputted
. Maintenance script for generating PH5P patch added, original PH5P source
file also added under version control
. Full unit test runner script title made more descriptive with PHP version
. Updated INSTALL file to state that 4.3.7 is the earliest version we
are actively testing
2.1.2, released 2007-09-03
! Implemented Object module for trusted users
! Implemented experimental HTML5 parsing mode using PH5P. To use, add
this to your code:
require_once 'HTMLPurifier/Lexer/PH5P.php';
$config->set('Core', 'LexerImpl', 'PH5P');
Note that this Lexer introduces some classes not in the HTMLPurifier
namespace. Also, this is PHP5 only.
! CSS property border-spacing implemented
- Fix non-visible parsing error in DirectLex with empty tags that have
slashes inside attribute values.
- Fix typo in CSS definition: border-collapse:seperate; was incorrectly
accepted as valid CSS. Usually non-visible, because this styling is the
default for tables in most browsers. Thanks Brett Zamir for pointing
this out.
- Fix validation errors in configuration form
- Hammer out a bunch of edge-case bugs in the standalone distribution
- Inclusion reflection removed from URISchemeRegistry; you must manually
include any new schema files you wish to use
- Numerous typo fixes in documentation thanks to Brett Zamir
. Unit test refactoring for one logical test per test function
. Config and context parameters in ComplexHarness deprecated: instead, edit
the $config and $context member variables
. HTML wrapper in DOMLex now takes DTD identifiers into account; doesn't
really make a difference, but is good for completeness sake
. merge-library.php script refactored for greater code reusability and
PHP4 compatibility
2.1.1, released 2007-08-04
- Fix show-stopper bug in %URI.MakeAbsolute functionality
- Fix PHP4 syntax error in standalone version
. Add prefix directory to include path for standalone, this prevents
other installations from clobbering the standalone's URI schemes
. Single test methods can be invoked by prefixing with __only
2.1.0, released 2007-08-02
# flush-htmldefinition-cache.php superseded in favor of a generic
flush-definition-cache.php script, you can clear a specific cache
by passing its name as a parameter to the script
! Phorum mod implemented for HTML Purifier
! With %Core.AggressivelyFixLt, <3 and similar emoticons no longer
trigger HTML removal in PHP5 (DOMLex). This directive is not necessary
for PHP4 (DirectLex).
! Standalone file now available, which greatly reduces the amount of
includes (although there are still a few files that reside in the
standalone folder)
! Relative URIs can now be transformed into their absolute equivalents
using %URI.Base and %URI.MakeAbsolute
! Ruby implemented for XHTML 1.1
! You can now define custom URI filtering behavior, see enduser-uri-filter.html
for more details
! UTF-8 font names now supported in CSS
- AutoFormatters emit friendly error messages if tags or attributes they
need are not allowed
- ConfigForm's compactification of directive names is now configurable
- AutoParagraph autoformatter algorithm refined after field-testing
- XHTML 1.1 now applies XHTML 1.0 Strict cleanup routines, namely
blockquote wrapping
- Contents of <style> tags removed by default when tags are removed
. HTMLPurifier_Config->getSerial() implemented, this is extremely useful
for output cache invalidation
. ConfigForm printer now can retrieve CSS and JS files as strings, in
case HTML Purifier's directory is not publically accessible
. Introduce new text/itext configuration directive values: these represent
longer strings that would be more appropriately edited with a textarea
. Allow newlines to act as separators for lists, hashes, lookups and
%HTML.Allowed
. ConfigForm generates textareas instead of text inputs for lists, hashes,
lookups, text and itext fields
. Hidden element content removal genericized: %Core.HiddenElements can
be used to customize this behavior, by default <script> and <style> are
hidden
. Added HTMLPURIFIER_PREFIX constant, should be used instead of dirname(__FILE__)
. Custom ChildDef added to default include list
. URIScheme reflection improved: will not attempt to include file if class
already exists. May clobber autoload, so I need to keep an eye on it
. ConfigSchema heavily optimized, will only collect information and validate
definitions when HTMLPURIFIER_SCHEMA_STRICT is true.
. AttrDef_URI unit tests and implementation refactored
. benchmarks/ directory now protected from public view with .htaccess file;
run the tests via command line
. URI scheme is munged off if there is no authority and the scheme is the
default one
. All unit tests inherit from HTMLPurifier_Harness, not UnitTestCase
. Interface for URIScheme changed
. Generic URI object to hold components of URI added, most systems involved
in URI validation have been migrated to use it
. Custom filtering for URIs factored out to URIDefinition interface for
maximum extensibility
2.0.1, released 2007-06-27
! Tag auto-closing now based on a ChildDef heuristic rather than a
manually set auto_close array; some behavior may change
@@ -601,7 +60,7 @@ NEWS ( CHANGELOG and HISTORY ) HTMLPurifier
and better modularization
# Configuration object now finalizes itself when a read operation is
performed on it, ensuring that its internal state stays consistent.
To revert this behavior, you can set the $autoFinalize member variable
To revert this behavior, you can set the $autoFinalize member variable
off, but it's not recommended.
# New compact syntax for AttrDef objects that can be used to instantiate
new objects via make()
@@ -685,7 +144,7 @@ NEWS ( CHANGELOG and HISTORY ) HTMLPurifier
AttrTransform_EnumToCSS, refer to HTMLModule/TransformToStrict.php to
see how the new equivalent is implemented
. Unit tests now use exclusively assertIdentical
1.6.0, released 2007-04-01
! Support for most common deprecated attributes via transformations:
+ bgcolor in td, th, tr and table
@@ -700,6 +159,8 @@ NEWS ( CHANGELOG and HISTORY ) HTMLPurifier
%Attr.IDBlacklistRegexp
- Error messages are emitted when you attempt to "allow" elements or
attributes that HTML Purifier does not support
- Fix segfault in unit test. The problem is not very reproduceable and
I don't know what causes it, but a six line patch fixed it.
@@ -898,6 +359,4 @@ NEWS ( CHANGELOG and HISTORY ) HTMLPurifier
! First public release, most functionality implemented. Notable omissions are:
+ Shorthand CSS properties
+ Table CSS properties
+ Deprecated attribute transformations
vim: et sw=4 sts=4
+ Deprecated attribute transformations

18
README
View File

@@ -2,15 +2,15 @@
README
All about HTML Purifier
HTML Purifier is an HTML filtering solution that uses a unique combination
of robust whitelists and agressive parsing to ensure that not only are
XSS attacks thwarted, but the resulting HTML is standards compliant.
HTML Purifier is an HTML filtering solution that uses a unique combination
of robust whitelists and agressive parsing to ensure that not only are
XSS attacks thwarted, but the resulting HTML is standards compliant.
HTML Purifier is oriented towards richly formatted documents from
untrusted sources that require CSS and a full tag-set. This library can
be configured to accept a more restrictive set of tags, but it won't be
as efficient as more bare-bones parsers. It will, however, do the job
right, which may be more important.
HTML Purifier is oriented towards richly formatted documents from
untrusted sources that require CSS and a full tag-set. This library can
be configured to accept a more restrictive set of tags, but it won't be
as efficient as more bare-bones parsers. It will, however, do the job
right, which may be more important.
Places to go:
@@ -20,5 +20,3 @@ Places to go:
* See WYSIWYG for information on editors like TinyMCE and FCKeditor
HTML Purifier can be found on the web at: http://htmlpurifier.org/
vim: et sw=4 sts=4

158
TODO
View File

@@ -1,4 +1,3 @@
TODO List
= KEY ====================
@@ -7,132 +6,85 @@ TODO List
? Maybe I'll Do It
==========================
If no interest is expressed for a feature that may require a considerable
amount of effort to implement, it may get endlessly delayed. Do not be
afraid to cast your vote for the next feature to be implemented!
Things to do as soon as possible:
- Think about allowing explicit order of operations hooks for transforms
- Inputs don't do the right thing with submit
- Fix "<.<" bug (trailing < is removed if not EOD)
- Build in better internal state dumps and debugging tools for remote
debugging
- Allowed/Allowed* have strange interactions when both set
- Transform lone embeds into object tags
FUTURE VERSIONS
---------------
4.2 release [OMG CONFIG PONIES]
! Fix Printer. It's from the old days when we didn't have decent XML classes
! Factor demo.php into a set of Printer classes, and then create a stub
file for users here (inside the actual HTML Purifier library)
- Fix error handling with form construction
- Do encoding validation in Printers, or at least, where user data comes in
- Config: Add examples to everything (make built-in which also automatically
gives output)
- Add "register" field to config schemas to eliminate dependence on
naming conventions (try to remember why we ultimately decided on tihs)
5.0 release [HTML 5]
# Swap out code to use html5lib tokenizer and tree-builder
! Allow turning off of FixNesting and required attribute insertion
5.1 release [It's All About Trust] (floating)
# Implement untrusted, dangerous elements/attributes
# Implement IDREF support (harder than it seems, since you cannot have
2.1 release [Refactor, refactor!]
# URI validation routines tighter (see docs/dev-code-quality.html) (COMPLEX)
# Advanced URI filtering schemes (see docs/proposal-new-directives.txt)
# Ruby support
- Configuration profiles: predefined directives set with one func call
- Implement IDREF support (harder than it seems, since you cannot have
IDREFs to non-existent IDs)
- Implement <area> (client and server side image maps are blocking
on IDREF support)
# Frameset XHTML 1.0 and HTML 4.01 doctypes
- Figure out how to simultaneously set %CSS.Trusted and %HTML.Trusted (?)
- Allow non-ASCII characters in font names
5.2 release [Error'ed]
2.2 release [Error'ed]
# Error logging for filtering/cleanup procedures
- XSS-attempt detection
2.3 release [Do What I Mean, Not What I Say]
# Additional support for poorly written HTML
- Microsoft Word HTML cleaning (i.e. MsoNormal, but research essential!)
- Friendly strict handling of <address> (block -> <br>)
- XSS-attempt detection--certain errors are flagged XSS-like
- Remove redundant tags, ex. <u><u>Underlined</u></u>. Implementation notes:
1. Analyzing which tags to remove duplicants
2. Ensure attributes are merged into the parent tag
3. Extend the tag exclusion system to specify whether or not the
contents should be dropped or not (currently, there's code that could do
something like this if it didn't drop the inner text too.)
- Remove <span> tags that don't do anything (no attributes)
- Remove empty inline tags<i></i>
- Append something to duplicate IDs so they're still usable (impl. note: the
dupe detector would also need to detect the suffix as well)
6.0 release [Beyond HTML]
# Legit token based CSS parsing (will require revamping almost every
AttrDef class). Probably will use CSSTidy
# More control over allowed CSS properties using a modularization
# IRI support (this includes IDN)
- Standardize token armor for all areas of processing
2.4 release [It's All About Trust] (floating)
# Implement untrusted, dangerous elements/attributes
7.0 release [To XML and Beyond]
3.0 release [Beyond HTML]
# Legit token based CSS parsing (will require revamping almost every
AttrDef class)
# More control over allowed CSS properties (maybe modularize it in the
same fashion!)
# Formatters for plaintext
- Smileys
- Standardize token armor for all areas of processing
- Fixes for Firefox's inability to handle COL alignment props (Bug 915)
- Automatically add non-breaking spaces to empty table cells when
empty-cells:show is applied to have compatibility with Internet Explorer
- Convert RTL/LTR override characters to <bdo> tags, or vice versa on demand.
Also, enable disabling of directionality
4.0 release [To XML and Beyond]
- Extended HTML capabilities based on namespacing and tag transforms (COMPLEX)
- Hooks for adding custom processors to custom namespaced tags and
attributes, offer default implementation
- Lots of documentation and samples
Ongoing
- More refactoring to take advantage of PHP5's facilities
- Refactor unit tests into lots of test methods
- Lots of profiling, make it faster!
- Plugins for major CMSes (COMPLEX)
- WordPress (mostly written, needs beta-testing)
- phpBB
- Also, a FAQ for extension writers with HTML Purifier
- Phorum
- eFiction
- more! (look for ones that use WYSIWYGs)
- Complete basic smoketests
AutoFormat
- Smileys
- Syntax highlighting (with GeSHi) with <pre> and possibly <?php
- Look at http://drupal.org/project/Modules/category/63 for ideas
Neat feature related
! Support exporting configuration, so users can easily tweak settings
in the demo, and then copy-paste into their own setup
- Advanced URI filtering schemes (see docs/proposal-new-directives.txt)
- Allow scoped="scoped" attribute in <style> tags; may be troublesome
because regular CSS has no way of uniquely identifying nodes, so we'd
have to generate IDs
Unknown release (on a scratch-an-itch basis)
? Semi-lossy dumb alternate character encoding transfor
? Have 'lang' attribute be checked against official lists, achieved by
encoding all characters that have string entity equivalents
- Explain how to use HTML Purifier in non-PHP languages / create
a simple command line stub (or complicated?)
- Fixes for Firefox's inability to handle COL alignment props (Bug 915)
- Automatically add non-breaking spaces to empty table cells when
empty-cells:show is applied to have compatibility with Internet Explorer
- Table of Contents generation (XHTML Compiler might be reusable). May also
be out-of-band information.
- Full set of color keywords. Also, a way to add onto them without
finalizing the configuration object.
- Write a var_export and memcached DefinitionCache - Denis
- Built-in support for target="_blank" on all external links
- Convert RTL/LTR override characters to <bdo> tags, or vice versa on demand.
Also, enable disabling of directionality
? Externalize inline CSS to promote clean HTML, proposed by Sander Tekelenburg
? Remove redundant tags, ex. <u><u>Underlined</u></u>. Implementation notes:
1. Analyzing which tags to remove duplicants
2. Ensure attributes are merged into the parent tag
3. Extend the tag exclusion system to specify whether or not the
contents should be dropped or not (currently, there's code that could do
something like this if it didn't drop the inner text too.)
Maintenance related (slightly boring)
# CHMOD install script for PEAR installs
! Factor out command line parser into its own class, and unit test it
- Reduce size of internal data-structures (esp. HTMLDefinition)
- Allow merging configurations. Thus,
a -> b -> default
c -> d -> default
becomes
a -> b -> c -> d -> default
Maybe allow more fine-grained tuning of this behavior. Alternatively,
encourage people to use short plist depths before building them up.
- Time PHPT tests
ChildDef related (very boring)
a simple command line stub
- Abstract ChildDef_BlockQuote to work with all elements that only
allow blocks in them, required or optional
- Implement lenient <ruby> child validation
- Reorganize Unit Tests
- Refactor loop tests (esp. AttrDef_URI)
- Reorganize configuration directives (Create more namespaces! Get messy!)
Requested
Wontfix
- Non-lossy smart alternate character encoding transformations (unless
patch provided)
- Pretty-printing HTML: users can use Tidy on the output on entire page
- Native content compression, whitespace stripping: use gzip if this is
- Pretty-printing HTML, users can use Tidy on the output on entire page
- Native content compression, whitespace stripping (don't rely on Tidy, make
sure we don't remove from <pre> or related tags): use gzip if this is
really important
vim: et sw=4 sts=4

View File

@@ -1 +1 @@
4.1.0
2.1.0

View File

@@ -1,6 +1,8 @@
HTML Purifier 4.1 is a major security release that fixes an XSS
vulnerability exploitable on Internet Explorer. It also contains
a number of new features, including dramatically more flexible Flash
support, including %Output.FlashCompat to replace %HTML.SafeEmbed,
optional support for the data: URI scheme and better HTML parsing
capabilities.
In version 2.1, HTML Purifier's URI validation and filtering handling
system has been revamped with a new, extensible URIFilter system. Also
notable features include preservation of emoticons in PHP5 with
%Core.AggressivelyFixLt, standalone and lite download versions,
transforming relative URIs to absolute URIs, Ruby in XHTML 1.1, a Phorum
mod, and UTF-8 font names. Notable bug-fixes include refinement of
the auto-paragraphing algorithm (no longer experimental), better XHTML
1.1 support and the removal of the contents of <style> elements.

View File

@@ -16,5 +16,3 @@ trouble. Therein lies the solution:
HTML Purifier is perfect for filtering pure-HTML input from WYSIWYG editors.
Enough said.
vim: et sw=4 sts=4

View File

@@ -1 +0,0 @@
Deny from all

View File

@@ -1,16 +0,0 @@
<?php
chdir(dirname(__FILE__));
//require_once '../library/HTMLPurifier.path.php';
shell_exec('php ../maintenance/generate-schema-cache.php');
require_once '../library/HTMLPurifier.path.php';
require_once 'HTMLPurifier.includes.php';
$begin = xdebug_memory_usage();
$schema = HTMLPurifier_ConfigSchema::makeFromSerial();
echo xdebug_memory_usage() - $begin;
// vim: et sw=4 sts=4

View File

@@ -1,69 +1,82 @@
<?php
require_once '../library/HTMLPurifier.auto.php';
// emulates inserting a dir called HTMLPurifier into your class dir
set_include_path(get_include_path() . PATH_SEPARATOR . '../library/');
@include_once '../test-settings.php';
// PEAR
require_once 'Benchmark/Timer.php'; // to do the timing
require_once 'Text/Password.php'; // for generating random input
require_once 'HTMLPurifier/ConfigSchema.php';
require_once 'HTMLPurifier/Config.php';
require_once 'HTMLPurifier/Context.php';
$LEXERS = array();
$RUNS = isset($GLOBALS['HTMLPurifierTest']['Runs'])
? $GLOBALS['HTMLPurifierTest']['Runs'] : 2;
? $GLOBALS['HTMLPurifierTest']['Runs'] : 2;
require_once 'HTMLPurifier/Lexer/DirectLex.php';
$LEXERS['DirectLex'] = new HTMLPurifier_Lexer_DirectLex();
if (!empty($GLOBALS['HTMLPurifierTest']['PEAR'])) {
require_once 'HTMLPurifier/Lexer/PEARSax3.php';
$LEXERS['PEARSax3'] = new HTMLPurifier_Lexer_PEARSax3();
} else {
exit('PEAR required to perform benchmark.');
}
if (version_compare(PHP_VERSION, '5', '>=')) {
require_once 'HTMLPurifier/Lexer/DOMLex.php';
$LEXERS['DOMLex'] = new HTMLPurifier_Lexer_DOMLex();
}
// PEAR
require_once 'Benchmark/Timer.php'; // to do the timing
require_once 'Text/Password.php'; // for generating random input
// custom class to aid unit testing
class RowTimer extends Benchmark_Timer
{
var $name;
function RowTimer($name, $auto = false) {
$this->name = htmlentities($name);
$this->Benchmark_Timer($auto);
}
function getOutput() {
$total = $this->TimeElapsed();
$result = $this->getProfiling();
$dashes = '';
$out = '<tr>';
$out .= "<td>{$this->name}</td>";
$standard = false;
foreach ($result as $k => $v) {
if ($v['name'] == 'Start' || $v['name'] == 'Stop') continue;
//$perc = (($v['diff'] * 100) / $total);
//$tperc = (($v['total'] * 100) / $total);
//$out .= '<td align="right">' . $v['diff'] . '</td>';
if ($standard == false) $standard = $v['diff'];
$perc = $v['diff'] * 100 / $standard;
$bad_run = ($v['diff'] < 0);
$out .= '<td align="right"'.
($bad_run ? ' style="color:#AAA;"' : '').
'>' . number_format($perc, 2, '.', '') .
'%</td><td>'.number_format($v['diff'],4,'.','').'</td>';
}
$out .= '</tr>';
return $out;
}
}
@@ -80,18 +93,18 @@ function print_lexers() {
function do_benchmark($name, $document) {
global $LEXERS, $RUNS;
$config = HTMLPurifier_Config::createDefault();
$context = new HTMLPurifier_Context();
$timer = new RowTimer($name);
$timer->start();
foreach($LEXERS as $key => $lexer) {
for ($i=0; $i<$RUNS; $i++) $tokens = $lexer->tokenizeHTML($document, $config, $context);
$timer->setMarker($key);
}
$timer->stop();
$timer->display();
}
@@ -118,11 +131,11 @@ foreach ($LEXERS as $key => $value) {
$dir = 'samples/Lexer';
$dh = opendir($dir);
while (false !== ($filename = readdir($dh))) {
if (strpos($filename, '.html') !== strlen($filename) - 5) continue;
$document = file_get_contents($dir . '/' . $filename);
do_benchmark("File: $filename", $document);
}
// crashers, caused infinite loops before
@@ -153,6 +166,3 @@ echo '<div>Random input was: ' .
</body></html>
<?php
// vim: et sw=4 sts=4

View File

@@ -0,0 +1,17 @@
<?php
set_include_path(get_include_path() . PATH_SEPARATOR . '../library/');
require_once 'HTMLPurifier/ConfigSchema.php';
require_once 'HTMLPurifier/Config.php';
require_once 'HTMLPurifier/Lexer/DirectLex.php';
require_once 'HTMLPurifier/Context.php';
$input = file_get_contents('samples/Lexer/4.html');
$lexer = new HTMLPurifier_Lexer_DirectLex();
$config = HTMLPurifier_Config::createDefault();
$context = new HTMLPurifier_Context();
for ($i = 0; $i < 10; $i++) {
$tokens = $lexer->tokenizeHTML($input, $config, $context);
}

View File

@@ -1,21 +0,0 @@
<?php
ini_set('xdebug.trace_format', 1);
ini_set('xdebug.show_mem_delta', true);
if (file_exists('Trace.xt')) {
echo "Previous trace Trace.xt must be removed before this script can be run.";
exit;
}
xdebug_start_trace(dirname(__FILE__) . '/Trace');
require_once '../library/HTMLPurifier.auto.php';
$purifier = new HTMLPurifier();
$data = $purifier->purify(file_get_contents('samples/Lexer/4.html'));
xdebug_stop_trace();
echo "Trace finished.";
// vim: et sw=4 sts=4

View File

@@ -28,7 +28,7 @@
<li>HX Edison Taiji Club <a href="http://www.taijiclub.org/downloads/Taiji_club_regulation_.pdf">by-law</a> effective 3/28/2006</li>
<li>A new email account for our club: HXEdisontaijiclub@yahoo.com</li>
<li>Workshop conducted by <a href="http://www.taijiclub.org/ch/Digest/LiDeyin">?????</a> Li Deyin is set on June 4, 2006 at Clarion Hotel in Edison from 9:30am-12pm; <a href="http://www.taijiclub.org/en/Registration">Registration</a></li>
</ul>
@@ -36,7 +36,7 @@
<p><i>Taiji</i> is an ancient Chinese tradition of movement systems that is associated with philosophy, physiology, psychology, geometry and dynamics. It is the slowest form of martial arts and is meant to improve the internal spirit. It is soothing to the soul and extremely invigorating. </p>
<p><i>Taiji</i> is an ancient Chinese tradition of movement systems that is associated with philosophy, physiology, psychology, geometry and dynamics. It is the slowest form of martial arts and is meant to improve the internal spirit. It is soothing to the soul and extremely invigorating. </p>
<p>The founder of Taiji was Zhang Sanfeng (Chang San-feng), who was a monk of the Wu Dang (Wu Tang) Monastery and lived in the period from 1391 to 1459. His exercises stressed suppleness and elasticity as opposed to the hardness and force of other martial art styles. Several centuries old, Taiji was originally developed as a form of self-defense, emphasizing strength, balance, flexibility and speed. Tai Chi also differs from other martial arts in that it is based on the Taoist religion and aims to avoid aggressive forces. </p>
@@ -50,7 +50,4 @@
<div style="text-align:center;">Click on photo to see HR version</div></div>
</body>
</html>
<!-- vim: et sw=4 sts=4
-->
</html>

View File

@@ -14,7 +14,4 @@ function rwt(el,ct,cd,sg){var e = window.encodeURIComponent ? encodeURIComponent
<form action=/search name=f><script><!--
function qs(el) {if (window.RegExp && window.encodeURIComponent) {var ue=el.href;var qe=encodeURIComponent(document.f.q.value);if(ue.indexOf("q=")!=-1){el.href=ue.replace(new RegExp("q=[^&$]*"),"q="+qe);}else{el.href=ue+"&q="+qe;}}return 1;}
// -->
</script><table border=0 cellspacing=0 cellpadding=4><tr><td nowrap><font size=-1><b>Web</b>&nbsp;&nbsp;&nbsp;&nbsp;<a id=1a class=q href="/imghp?hl=en&tab=wi" onClick="return qs(this);">Images</a>&nbsp;&nbsp;&nbsp;&nbsp;<a id=2a class=q href="http://groups.google.com/grphp?hl=en&tab=wg" onClick="return qs(this);">Groups</a>&nbsp;&nbsp;&nbsp;&nbsp;<a id=4a class=q href="http://news.google.com/nwshp?hl=en&tab=wn" onClick="return qs(this);">News</a>&nbsp;&nbsp;&nbsp;&nbsp;<a id=5a class=q href="http://froogle.google.com/frghp?hl=en&tab=wf" onClick="return qs(this);">Froogle</a>&nbsp;&nbsp;&nbsp;&nbsp;<a id=8a class=q href="/lochp?hl=en&tab=wl" onClick="return qs(this);">Local</a>&nbsp;&nbsp;&nbsp;&nbsp;<b><a href="/intl/en/options/" class=q>more&nbsp;&raquo;</a></b></font></td></tr></table><table cellspacing=0 cellpadding=0><tr><td width=25%>&nbsp;</td><td align=center><input type=hidden name=hl value=en><input maxlength=2048 size=55 name=q value="" title="Google Search"><br><input type=submit value="Google Search" name=btnG><input type=submit value="I'm Feeling Lucky" name=btnI></td><td valign=top nowrap width=25%><font size=-2>&nbsp;&nbsp;<a href=/advanced_search?hl=en>Advanced Search</a><br>&nbsp;&nbsp;<a href=/preferences?hl=en>Preferences</a><br>&nbsp;&nbsp;<a href=/language_tools?hl=en>Language Tools</a></font></td></tr></table></form><br><br><font size=-1><a href="/ads/">Advertising&nbsp;Programs</a> - <a href=/services/>Business Solutions</a> - <a href=/about.html>About Google</a></font><p><font size=-2>&copy;2006 Google</font></p></center></body></html>
<!-- vim: et sw=4 sts=4
-->
</script><table border=0 cellspacing=0 cellpadding=4><tr><td nowrap><font size=-1><b>Web</b>&nbsp;&nbsp;&nbsp;&nbsp;<a id=1a class=q href="/imghp?hl=en&tab=wi" onClick="return qs(this);">Images</a>&nbsp;&nbsp;&nbsp;&nbsp;<a id=2a class=q href="http://groups.google.com/grphp?hl=en&tab=wg" onClick="return qs(this);">Groups</a>&nbsp;&nbsp;&nbsp;&nbsp;<a id=4a class=q href="http://news.google.com/nwshp?hl=en&tab=wn" onClick="return qs(this);">News</a>&nbsp;&nbsp;&nbsp;&nbsp;<a id=5a class=q href="http://froogle.google.com/frghp?hl=en&tab=wf" onClick="return qs(this);">Froogle</a>&nbsp;&nbsp;&nbsp;&nbsp;<a id=8a class=q href="/lochp?hl=en&tab=wl" onClick="return qs(this);">Local</a>&nbsp;&nbsp;&nbsp;&nbsp;<b><a href="/intl/en/options/" class=q>more&nbsp;&raquo;</a></b></font></td></tr></table><table cellspacing=0 cellpadding=0><tr><td width=25%>&nbsp;</td><td align=center><input type=hidden name=hl value=en><input maxlength=2048 size=55 name=q value="" title="Google Search"><br><input type=submit value="Google Search" name=btnG><input type=submit value="I'm Feeling Lucky" name=btnI></td><td valign=top nowrap width=25%><font size=-2>&nbsp;&nbsp;<a href=/advanced_search?hl=en>Advanced Search</a><br>&nbsp;&nbsp;<a href=/preferences?hl=en>Preferences</a><br>&nbsp;&nbsp;<a href=/language_tools?hl=en>Language Tools</a></font></td></tr></table></form><br><br><font size=-1><a href="/ads/">Advertising&nbsp;Programs</a> - <a href=/services/>Business Solutions</a> - <a href=/about.html>About Google</a></font><p><font size=-2>&copy;2006 Google</font></p></center></body></html>

View File

@@ -67,21 +67,21 @@ if (objAdMgr.isSlotAvailable("leaderboard")) {
</table>
<table width="86%" border="0" cellspacing="0" cellpadding="2">
<tr>
<td height="388" width="19%" bgcolor="#FFCCFF" valign="top">
<td height="388" width="19%" bgcolor="#FFCCFF" valign="top">
<p>May 1, 2000</p>
<p><b>Pop Culture</b> </p>
<p>by. H. Finkelstein</p>
</td>
<td height="388" width="52%" valign="top">
<p>Welcome to the <b>Anime Digi-Lib</b>, a virtual index to anime on the
internet. This site strives to house a comprehensive index to both personal
and commercial websites and provides reviews to these sites. We hope to
be a gateway for people who've never imagined they'd ever be interested
<td height="388" width="52%" valign="top">
<p>Welcome to the <b>Anime Digi-Lib</b>, a virtual index to anime on the
internet. This site strives to house a comprehensive index to both personal
and commercial websites and provides reviews to these sites. We hope to
be a gateway for people who've never imagined they'd ever be interested
in Japanese Animation. </p>
<table width="99%" border="1" cellspacing="0" cellpadding="2" height="320" name="Searchnservices">
<tr>
<td height="263" valign="top" width="58%">
<td height="263" valign="top" width="58%">
<p>&nbsp; </p>
<p>&nbsp;</p>
@@ -107,15 +107,15 @@ if (objAdMgr.isSlotAvailable("leaderboard")) {
</form>
<td>
<td>
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tr><td><font face="verdana,geneva" color="#000011" size="1">What is better, subtitled or dubbed anime?</font></td></tr>
<tr><td><input type="radio" name="rd" value="1"><font face="verdana" size="2" color="#000011">Subtitled</font></td></tr>
<tr><td align="middle"><font face="verdana" size="1"><a href="http://pub.alxnet.com/poll?id=2079873&q=view">Current results</a></font></td></tr>
</table></td></tr>
<tr>
<td><font face="verdana" size="1"><a href="http://www.alxnet.com/services/poll/">Free
<tr>
<td><font face="verdana" size="1"><a href="http://www.alxnet.com/services/poll/">Free
Web Polls</a></font></td>
</tr>
</table></form>
@@ -126,6 +126,3 @@ if (objAdMgr.isSlotAvailable("leaderboard")) {
</body>
</html>
<!-- vim: et sw=4 sts=4
-->

View File

@@ -138,7 +138,7 @@
</table>
<p><script type="text/javascript">
//<![CDATA[
if (window.showTocToggle) { var tocShowText = "show"; var tocHideText = "hide"; showTocToggle(); }
if (window.showTocToggle) { var tocShowText = "show"; var tocHideText = "hide"; showTocToggle(); }
//]]>
</script></p>
<div class="editsection" style="float:right;margin-left:5px;">[<a href="/w/index.php?title=Tai_Chi_Chuan&amp;action=edit&amp;section=1" title="Edit section: Overview">edit</a>]</div>
@@ -279,19 +279,19 @@ Yang Small Frame | <a href="/wik
| |
<a href="/w/index.php?title=Wu_Ta-kuei&amp;action=edit" class="new" title="Wu Ta-kuei">Wu Ta-kuei</a> <a href="/w/index.php?title=Sun_Hsing-i&amp;action=edit" class="new" title="Sun Hsing-i">Sun Hsing-i</a>
1923-1970 1891-1929
<b>MODERN FORMS</b>
from Yang Ch`eng-fu
|
|
|
+--------------+
| |
<a href="/wiki/Cheng_Man-ch%27ing" title="Cheng Man-ch'ing">Cheng Man-ch'ing</a> |
1901-1975 |
Short (37) Form |
1923-1970 1891-1929
<b>MODERN FORMS</b>
from Yang Ch`eng-fu
|
|
|
+--------------+
| |
<a href="/wiki/Cheng_Man-ch%27ing" title="Cheng Man-ch'ing">Cheng Man-ch'ing</a> |
1901-1975 |
Short (37) Form |
|
Chinese Sports Commission
1956
@@ -538,6 +538,3 @@ Retrieved from "<a href="http://en.wikipedia.org/wiki/Tai_Chi_Chuan">http://en.w
<!-- Served by srv25 in 0.089 secs. -->
</body></html>
<!-- vim: et sw=4 sts=4
-->

View File

@@ -2,6 +2,4 @@ Disclaimer:
The HTML used in these samples are taken from random websites. I claim
no copyright over these and assert that I may use them like this under
fair use.
vim: et sw=4 sts=4
fair use.

View File

@@ -2,12 +2,12 @@
/**
* Generates XML and HTML documents describing configuration.
* @note PHP 5.2+ only!
* @note PHP 5 only!
*/
/*
TODO:
- make XML format richer
- make XML format richer (see XMLSerializer_ConfigSchema)
- extend XSLT transformation (see the corresponding XSLT file)
- allow generation of packaged docs that can be easily moved
- multipage documentation
@@ -15,50 +15,31 @@ TODO:
- add blurbs to ToC
*/
if (version_compare(PHP_VERSION, '5.2', '<')) exit('PHP 5.2+ required.');
error_reporting(E_ALL | E_STRICT);
if (version_compare('5', PHP_VERSION, '>')) exit('Requires PHP 5 or higher.');
error_reporting(E_ALL); // probably not possible to use E_STRICT
define('HTMLPURIFIER_SCHEMA_STRICT', true); // description data needs to be collected
// load dual-libraries
require_once dirname(__FILE__) . '/../extras/HTMLPurifierExtras.auto.php';
require_once dirname(__FILE__) . '/../library/HTMLPurifier.auto.php';
require_once '../library/HTMLPurifier.auto.php';
require_once 'library/ConfigDoc.auto.php';
// setup HTML Purifier singleton
HTMLPurifier::getInstance(array(
$purifier = HTMLPurifier::getInstance(array(
'AutoFormat.PurifierLinkify' => true
));
$builder = new HTMLPurifier_ConfigSchema_InterchangeBuilder();
$interchange = new HTMLPurifier_ConfigSchema_Interchange();
$builder->buildDir($interchange);
$loader = dirname(__FILE__) . '/../config-schema.php';
if (file_exists($loader)) include $loader;
$interchange->validate();
$style = 'plain'; // use $_GET in the future, careful to validate!
$configdoc_xml = dirname(__FILE__) . '/configdoc.xml';
$xml_builder = new HTMLPurifier_ConfigSchema_Builder_Xml();
$xml_builder->openURI($configdoc_xml);
$xml_builder->build($interchange);
unset($xml_builder); // free handle
$xslt = new ConfigDoc_HTMLXSLTProcessor();
$xslt->importStylesheet(dirname(__FILE__) . "/styles/$style.xsl");
$output = $xslt->transformToHTML($configdoc_xml);
if (!$output) {
echo "Error in generating files\n";
exit(1);
}
$schema = HTMLPurifier_ConfigSchema::instance();
$style = 'plain'; // use $_GET in the future
$configdoc = new ConfigDoc();
$output = $configdoc->generate($schema, $style);
// write out
file_put_contents(dirname(__FILE__) . "/$style.html", $output);
file_put_contents("$style.html", $output);
if (php_sapi_name() != 'cli') {
// output (instant feedback if it's a browser)
// output = instant feedback
echo $output;
} else {
echo "Files generated successfully.\n";
echo 'Files generated successfully.';
}
// vim: et sw=4 sts=4

View File

@@ -5,7 +5,5 @@
*/
set_include_path(dirname(__FILE__) . PATH_SEPARATOR . get_include_path() );
require_once 'HTMLPurifierExtras.php';
require_once 'HTMLPurifierExtras.autoload.php';
require_once 'ConfigDoc.php';
// vim: et sw=4 sts=4

View File

@@ -0,0 +1,38 @@
<?php
require_once 'ConfigDoc/HTMLXSLTProcessor.php';
require_once 'ConfigDoc/XMLSerializer/Types.php';
require_once 'ConfigDoc/XMLSerializer/ConfigSchema.php';
class ConfigDoc
{
function generate($schema, $xsl_stylesheet_name = 'plain', $parameters = array()) {
// generate types document, describing type constraints
$types_serializer = new ConfigDoc_XMLSerializer_Types();
$types_document = $types_serializer->serialize($schema);
$types_document->save(dirname(__FILE__) . '/../types.xml'); // only ONE
// generate configdoc.xml, documents configuration directives
$schema_serializer = new ConfigDoc_XMLSerializer_ConfigSchema();
$schema_document = $schema_serializer->serialize($schema);
$schema_document->save('configdoc.xml');
// setup transformation
$xsl_stylesheet = dirname(__FILE__) . "/../styles/$xsl_stylesheet_name.xsl";
$xslt_processor = new ConfigDoc_HTMLXSLTProcessor();
$xslt_processor->setParameters($parameters);
$xslt_processor->importStylesheet($xsl_stylesheet);
return $xslt_processor->transformToHTML($schema_document);
}
/**
* Remove any generated files
*/
function cleanup() {
unlink('configdoc.xml');
}
}

View File

@@ -1,23 +1,21 @@
<?php
/**
* Decorator/extender XSLT processor specifically for HTML documents.
* Special XSLTProcessor specifically for HTML documents. Loosely
* based off of XSLTProcessor, but not really
*/
class ConfigDoc_HTMLXSLTProcessor
{
/**
* Instance of XSLTProcessor
*/
protected $xsltProcessor;
public function __construct($proc = false) {
if ($proc === false) $proc = new XSLTProcessor();
$this->xsltProcessor = $proc;
public function __construct() {
$this->xsltProcessor = new XSLTProcessor();
}
/**
* @note Allows a string $xsl filename to be passed
* Imports stylesheet for processor to use
* @param $xsl XSLT DOM tree, or filename of the XSL transformation
*/
public function importStylesheet($xsl) {
if (is_string($xsl)) {
@@ -27,27 +25,18 @@ class ConfigDoc_HTMLXSLTProcessor
}
return $this->xsltProcessor->importStylesheet($xsl);
}
/**
* Transforms an XML file into compatible XHTML based on the stylesheet
* @param $xml XML DOM tree, or string filename
* @return string HTML output
* @todo Rename to transformToXHTML, as transformToHTML is misleading
* Transforms an XML file into HTML based on the stylesheet
* @param $xml XML DOM tree
*/
public function transformToHTML($xml) {
if (is_string($xml)) {
$dom = new DOMDocument();
$dom->load($xml);
} else {
$dom = $xml;
}
$out = $this->xsltProcessor->transformToXML($dom);
$out = $this->xsltProcessor->transformToXML($xml);
// fudges for HTML backwards compatibility
// assumes that document is XHTML
$out = str_replace('/>', ' />', $out); // <br /> not <br/>
$out = str_replace(' xmlns=""', '', $out); // rm unnecessary xmlns
$out = str_replace(' xmlns="http://www.w3.org/1999/xhtml"', '', $out); // rm unnecessary xmlns
if (class_exists('Tidy')) {
// cleanup output
$config = array(
@@ -60,27 +49,14 @@ class ConfigDoc_HTMLXSLTProcessor
$tidy->cleanRepair();
$out = (string) $tidy;
}
return $out;
}
/**
* Bulk sets parameters for the XSL stylesheet
* @param array $options Associative array of options to set
*/
public function setParameters($options) {
foreach ($options as $name => $value) {
$this->xsltProcessor->setParameter('', $name, $value);
}
}
/**
* Forward any other calls to the XSLT processor
*/
public function __call($name, $arguments) {
call_user_func_array(array($this->xsltProcessor, $name), $arguments);
}
}
// vim: et sw=4 sts=4

View File

@@ -0,0 +1,25 @@
<?php
/**
* The XMLSerializer hierarchy of classes consist of classes that take
* objects and serialize them into XML, specifically DOM, form; this
* super-class contains convenience functions for those classes.
*/
class ConfigDoc_XMLSerializer
{
protected function appendHTMLDiv($document, $node, $html) {
$purifier = HTMLPurifier::getInstance();
$html = $purifier->purify($html);
$dom_html = $document->createDocumentFragment();
$dom_html->appendXML($html);
$dom_div = $document->createElement('div');
$dom_div->setAttribute('xmlns', 'http://www.w3.org/1999/xhtml');
$dom_div->appendChild($dom_html);
$node->appendChild($dom_div);
}
}

View File

@@ -0,0 +1,123 @@
<?php
require_once 'ConfigDoc/XMLSerializer.php';
class ConfigDoc_XMLSerializer_ConfigSchema extends ConfigDoc_XMLSerializer
{
/**
* Serializes a schema into DOM form
* @todo Split into sub-serializers
* @param $schema HTMLPurifier_ConfigSchema to serialize
*/
public function serialize($schema) {
$dom_document = new DOMDocument('1.0', 'UTF-8');
$dom_root = $dom_document->createElement('configdoc');
$dom_document->appendChild($dom_root);
$dom_document->formatOutput = true;
// add the name of the application
$dom_root->appendChild($dom_document->createElement('title', 'HTML Purifier'));
/*
TODO for XML format:
- create a definition (DTD or other) once interface stabilizes
*/
foreach($schema->info as $namespace_name => $namespace_info) {
$dom_namespace = $dom_document->createElement('namespace');
$dom_root->appendChild($dom_namespace);
$dom_namespace->setAttribute('id', $namespace_name);
$dom_namespace->appendChild(
$dom_document->createElement('name', $namespace_name)
);
$dom_namespace_description = $dom_document->createElement('description');
$dom_namespace->appendChild($dom_namespace_description);
$this->appendHTMLDiv($dom_document, $dom_namespace_description,
$schema->info_namespace[$namespace_name]->description);
foreach ($namespace_info as $name => $info) {
if ($info->class == 'alias') continue;
$dom_directive = $dom_document->createElement('directive');
$dom_namespace->appendChild($dom_directive);
$dom_directive->setAttribute('id', $namespace_name . '.' . $name);
$dom_directive->appendChild(
$dom_document->createElement('name', $name)
);
$dom_aliases = $dom_document->createElement('aliases');
$dom_directive->appendChild($dom_aliases);
foreach ($info->directiveAliases as $alias) {
$dom_aliases->appendChild($dom_document->createElement('alias', $alias));
}
$dom_constraints = $dom_document->createElement('constraints');
$dom_directive->appendChild($dom_constraints);
$dom_type = $dom_document->createElement('type', $info->type);
if ($info->allow_null) {
$dom_type->setAttribute('allow-null', 'yes');
}
$dom_constraints->appendChild($dom_type);
if ($info->allowed !== true) {
$dom_allowed = $dom_document->createElement('allowed');
$dom_constraints->appendChild($dom_allowed);
foreach ($info->allowed as $allowed => $bool) {
$dom_allowed->appendChild(
$dom_document->createElement('value', $allowed)
);
}
}
$raw_default = $schema->defaults[$namespace_name][$name];
if (is_bool($raw_default)) {
$default = $raw_default ? 'true' : 'false';
} elseif (is_string($raw_default)) {
$default = "\"$raw_default\"";
} elseif (is_null($raw_default)) {
$default = 'null';
} else {
$default = print_r(
$schema->defaults[$namespace_name][$name], true
);
}
$dom_default = $dom_document->createElement('default', $default);
// remove this once we get a DTD
$dom_default->setAttribute('xml:space', 'preserve');
$dom_constraints->appendChild($dom_default);
$dom_descriptions = $dom_document->createElement('descriptions');
$dom_directive->appendChild($dom_descriptions);
foreach ($info->descriptions as $file => $file_descriptions) {
foreach ($file_descriptions as $line => $description) {
$dom_description = $dom_document->createElement('description');
// refuse to write $file if it's a full path
if (str_replace('\\', '/', realpath($file)) != $file) {
$dom_description->setAttribute('file', $file);
$dom_description->setAttribute('line', $line);
}
$this->appendHTMLDiv($dom_document, $dom_description, $description);
$dom_descriptions->appendChild($dom_description);
}
}
}
}
return $dom_document;
}
}

View File

@@ -0,0 +1,26 @@
<?php
require_once 'ConfigDoc/XMLSerializer.php';
class ConfigDoc_XMLSerializer_Types extends ConfigDoc_XMLSerializer
{
/**
* Serializes the types in a schema into DOM form
* @param $schema HTMLPurifier_ConfigSchema owner of types to serialize
*/
public function serialize($schema) {
$types_document = new DOMDocument('1.0', 'UTF-8');
$types_root = $types_document->createElement('types');
$types_document->appendChild($types_root);
$types_document->formatOutput = true;
foreach ($schema->types as $name => $expanded_name) {
$types_type = $types_document->createElement('type', $expanded_name);
$types_type->setAttribute('id', $name);
$types_root->appendChild($types_type);
}
return $types_document;
}
}

View File

@@ -1,30 +1,16 @@
body {margin:0;padding:0;}
#content {
margin:1em auto;
max-width: 47em;
width: expression(document.body.clientWidth >
85 * parseInt(document.body.currentStyle.fontSize) ?
"54em": "auto");
}
body {margin:1em 4em;}
table {border-collapse:collapse;}
table td, table th {padding:0.2em;}
table.constraints {margin:0 0 1em;}
table.constraints th {
text-align:right;padding-left:0.4em;padding-right:0.4em;background:#EEE;
width:8em;vertical-align:top;}
table.constraints td {padding-right:0.4em; padding-left: 1em;}
table.constraints td ul {padding:0; margin:0; list-style:none;}
table.constraints th {text-align:left;padding-left:0.4em;}
table.constraints td {padding-right:0.4em;}
table.constraints td pre {margin:0;}
#tocContainer {position:relative;}
#toc {list-style-type:none; font-weight:bold; font-size:1em; margin-bottom:1em;}
#toc li {position:relative; line-height: 1.2em;}
#toc .col-2 {margin-left:50%;}
#toc .col-l {float:left;}
#toc ul {list-style-type:disc; font-weight:normal; padding-bottom:1.2em;}
#toc {list-style-type:none; font-weight:bold;}
#toc ul {list-style-type:disc; font-weight:normal;}
.description p {margin-top:0;margin-bottom:1em;}
@@ -33,12 +19,6 @@ table.constraints td pre {margin:0;}
#library {font-size:1em;}
h1 {margin-top:0;}
h2 {border-bottom:1px solid #CCC; font-family:sans-serif; font-weight:normal;
font-size:1.3em; clear:both;}
font-size:1.3em;}
h3 {font-family:sans-serif; font-size:1.1em; font-weight:bold; }
h4 {font-family:sans-serif; font-size:0.9em; font-weight:bold; }
.deprecated {color: #CCC;}
.deprecated table.constraints th {background:#FFF;}
.deprecated-notice {color: #000; text-align:center; margin-bottom: 1em;}
/* vim: et sw=4 sts=4 */

View File

@@ -14,13 +14,9 @@
/>
<xsl:param name="css" select="'styles/plain.css'"/>
<xsl:param name="title" select="'Configuration Documentation'"/>
<xsl:variable name="typeLookup" select="document('../types.xml')/types" />
<xsl:variable name="usageLookup" select="document('../usage.xml')/usage" />
<!-- Twiddle this variable to get the columns as even as possible -->
<xsl:variable name="maxNumberAdjust" select="2" />
<xsl:variable name="typeLookup" select="document('../types.xml')" />
<xsl:template match="/">
<html lang="en" xml:lang="en">
<head>
@@ -29,170 +25,105 @@
<link rel="stylesheet" type="text/css" href="{$css}" />
</head>
<body>
<div id="content">
<div id="library"><xsl:value-of select="/configdoc/title" /></div>
<h1><xsl:value-of select="$title" /></h1>
<div id="tocContainer">
<h2>Table of Contents</h2>
<ul id="toc">
<xsl:apply-templates mode="toc">
<xsl:with-param name="overflowNumber" select="round(count(/configdoc/namespace) div 2) + $maxNumberAdjust" />
</xsl:apply-templates>
</ul>
</div>
<xsl:apply-templates />
</div>
<div id="library"><xsl:value-of select="/configdoc/title" /></div>
<h1><xsl:value-of select="$title" /></h1>
<h2>Table of Contents</h2>
<ul id="toc">
<xsl:apply-templates mode="toc" />
</ul>
<xsl:apply-templates />
</body>
</html>
</xsl:template>
<xsl:template match="title" mode="toc" />
<xsl:template match="namespace" mode="toc">
<xsl:param name="overflowNumber" />
<xsl:variable name="number"><xsl:number level="single" /></xsl:variable>
<xsl:variable name="directiveNumber"><xsl:number level="any" count="directive" /></xsl:variable>
<xsl:if test="count(directive)&gt;0">
<li>
<!-- BEGIN multicolumn code -->
<xsl:if test="$number &gt;= $overflowNumber">
<xsl:attribute name="class">col-2</xsl:attribute>
</xsl:if>
<xsl:if test="$number = $overflowNumber">
<xsl:attribute name="style">margin-top:-<xsl:value-of select="($number * 2 + $directiveNumber - 3) * 1.2" />em</xsl:attribute>
</xsl:if>
<!-- END multicolumn code -->
<a href="#{@id}"><xsl:value-of select="name" /></a>
<ul>
<xsl:apply-templates select="directive" mode="toc">
<xsl:with-param name="overflowNumber" select="$overflowNumber" />
</xsl:apply-templates>
<xsl:apply-templates select="directive" mode="toc" />
</ul>
<xsl:if test="$number + 1 = $overflowNumber">
<div class="col-l" />
</xsl:if>
</li>
</xsl:if>
</xsl:template>
<xsl:template match="directive" mode="toc">
<xsl:variable name="number">
<xsl:number level="any" count="directive|namespace" />
</xsl:variable>
<xsl:if test="not(deprecated)">
<li>
<a href="#{@id}"><xsl:value-of select="name" /></a>
</li>
</xsl:if>
<li><a href="#{@id}"><xsl:value-of select="name" /></a></li>
</xsl:template>
<xsl:template match="title" />
<xsl:template match="namespace">
<div class="namespace">
<xsl:apply-templates />
<xsl:if test="count(directive)=0">
<p>No configuration directives defined for this namespace.</p>
</xsl:if>
</div>
<xsl:apply-templates />
<xsl:if test="count(directive)=0">
<p>No configuration directives defined for this namespace.</p>
</xsl:if>
</xsl:template>
<xsl:template match="namespace/name">
<h2 id="{../@id}"><xsl:value-of select="." /></h2>
</xsl:template>
<xsl:template match="namespace/description">
<div class="description">
<xsl:copy-of xmlns:xhtml="http://www.w3.org/1999/xhtml" select="xhtml:div/node()" />
<xsl:copy-of select="div/node()" />
</div>
</xsl:template>
<xsl:template match="directive">
<div>
<xsl:attribute name="class"><!--
-->directive<!--
--><xsl:if test="deprecated"> deprecated</xsl:if><!--
--></xsl:attribute>
<xsl:apply-templates>
<xsl:with-param name="id" select="@id" />
</xsl:apply-templates>
</div>
<xsl:apply-templates />
</xsl:template>
<xsl:template match="directive/name">
<xsl:param name="id" />
<xsl:apply-templates select="../aliases/alias" mode="anchor" />
<h3 id="{$id}"><xsl:value-of select="$id" /></h3>
<h3 id="{../@id}"><xsl:value-of select="../@id" /></h3>
</xsl:template>
<xsl:template match="alias" mode="anchor">
<a id="{.}"></a>
</xsl:template>
<!-- Do not pass through -->
<xsl:template match="alias"></xsl:template>
<xsl:template match="directive/constraints">
<xsl:param name="id" />
<table class="constraints">
<xsl:apply-templates />
<!-- Calculated other values -->
<xsl:if test="../descriptions/description[@file]">
<tr>
<th>Used by:</th>
<td>
<xsl:for-each select="../descriptions/description">
<xsl:if test="position()&gt;1">, </xsl:if>
<xsl:value-of select="@file" />
</xsl:for-each>
</td>
</tr>
</xsl:if>
<xsl:if test="../aliases/alias">
<xsl:apply-templates select="../aliases" mode="constraints" />
</xsl:if>
<xsl:apply-templates select="$usageLookup/directive[@id=$id]" />
</table>
</xsl:template>
<xsl:template match="directive/aliases" mode="constraints">
<tr>
<th>Aliases</th>
<td>
<xsl:for-each select="alias">
<xsl:if test="position()&gt;1">, </xsl:if>
<xsl:value-of select="." />
</xsl:for-each>
</td>
</tr>
</xsl:template>
<xsl:template match="directive/description">
<div class="description">
<xsl:copy-of xmlns:xhtml="http://www.w3.org/1999/xhtml" select="xhtml:div/node()" />
</div>
</xsl:template>
<xsl:template match="directive/deprecated">
<div class="deprecated-notice">
<strong>Warning:</strong>
This directive was deprecated in version <xsl:value-of select="version" />.
<a href="#{use}">%<xsl:value-of select="use" /></a> should be used instead.
</div>
</xsl:template>
<xsl:template match="usage/directive">
<tr>
<th>Used in</th>
<td>
<ul>
<xsl:apply-templates />
</ul>
</td>
</tr>
</xsl:template>
<xsl:template match="usage/directive/file">
<li>
<em><xsl:value-of select="@name" /></em> on line<xsl:if test="count(line)&gt;1">s</xsl:if>
<xsl:text> </xsl:text>
<xsl:for-each select="line">
<th>Aliases:</th>
<td>
<xsl:for-each select="alias">
<xsl:if test="position()&gt;1">, </xsl:if>
<xsl:value-of select="." />
</xsl:for-each>
</li>
</td>
</xsl:template>
<xsl:template match="constraints/version">
<tr>
<th>Version added</th>
<td><xsl:value-of select="." /></td>
</tr>
<xsl:template match="directive//description">
<div class="description">
<xsl:copy-of select="div/node()" />
</div>
</xsl:template>
<xsl:template match="constraints/type">
<tr>
<th>Type</th>
<th>Type:</th>
<td>
<xsl:variable name="type" select="text()" />
<xsl:attribute name="class">type type-<xsl:value-of select="$type" /></xsl:attribute>
<xsl:value-of select="$typeLookup/type[@id=$type]/text()" />
<xsl:value-of select="$typeLookup/types/type[@id=$type]/text()" />
<xsl:if test="@allow-null='yes'">
(or null)
</xsl:if>
@@ -201,7 +132,7 @@
</xsl:template>
<xsl:template match="constraints/allowed">
<tr>
<th>Allowed values</th>
<th>Allowed values:</th>
<td>
<xsl:for-each select="value"><!--
--><xsl:if test="position()&gt;1">, </xsl:if>
@@ -212,25 +143,9 @@
</xsl:template>
<xsl:template match="constraints/default">
<tr>
<th>Default</th>
<th>Default:</th>
<td><pre><xsl:value-of select="." xml:space="preserve" /></pre></td>
</tr>
</xsl:template>
<xsl:template match="constraints/external">
<tr>
<th>External deps</th>
<td>
<ul>
<xsl:apply-templates />
</ul>
</td>
</tr>
</xsl:template>
<xsl:template match="constraints/external/project">
<li><xsl:value-of select="." /></li>
</xsl:template>
</xsl:stylesheet>
<!-- vim: et sw=4 sts=4
-->

View File

@@ -1,17 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<types>
<type id="string">String</type>
<type id="istring">Case-insensitive string</type>
<type id="text">Text</type>
<type id="itext">Case-insensitive text</type>
<type id="int">Integer</type>
<type id="float">Float</type>
<type id="bool">Boolean</type>
<type id="lookup">Lookup array</type>
<type id="list">Array list</type>
<type id="hash">Associative array</type>
<type id="mixed">Mixed</type>
</types>
<!-- vim: et sw=4 sts=4
-->

View File

@@ -1,448 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<usage>
<directive id="Core.CollectErrors">
<file name="HTMLPurifier.php">
<line>131</line>
</file>
<file name="HTMLPurifier/Lexer.php">
<line>81</line>
</file>
<file name="HTMLPurifier/Lexer/DirectLex.php">
<line>53</line>
<line>73</line>
<line>348</line>
</file>
<file name="HTMLPurifier/Strategy/RemoveForeignElements.php">
<line>47</line>
</file>
</directive>
<directive id="CSS.MaxImgLength">
<file name="HTMLPurifier/CSSDefinition.php">
<line>157</line>
</file>
</directive>
<directive id="CSS.Proprietary">
<file name="HTMLPurifier/CSSDefinition.php">
<line>214</line>
</file>
</directive>
<directive id="CSS.AllowTricky">
<file name="HTMLPurifier/CSSDefinition.php">
<line>218</line>
</file>
</directive>
<directive id="CSS.AllowImportant">
<file name="HTMLPurifier/CSSDefinition.php">
<line>222</line>
</file>
</directive>
<directive id="CSS.AllowedProperties">
<file name="HTMLPurifier/CSSDefinition.php">
<line>275</line>
</file>
</directive>
<directive id="Cache.DefinitionImpl">
<file name="HTMLPurifier/DefinitionCacheFactory.php">
<line>49</line>
</file>
</directive>
<directive id="HTML.Doctype">
<file name="HTMLPurifier/DoctypeRegistry.php">
<line>83</line>
</file>
</directive>
<directive id="HTML.CustomDoctype">
<file name="HTMLPurifier/DoctypeRegistry.php">
<line>85</line>
</file>
</directive>
<directive id="HTML.XHTML">
<file name="HTMLPurifier/DoctypeRegistry.php">
<line>88</line>
</file>
</directive>
<directive id="HTML.Strict">
<file name="HTMLPurifier/DoctypeRegistry.php">
<line>93</line>
</file>
</directive>
<directive id="Core.Encoding">
<file name="HTMLPurifier/Encoder.php">
<line>267</line>
<line>300</line>
</file>
</directive>
<directive id="Test.ForceNoIconv">
<file name="HTMLPurifier/Encoder.php">
<line>272</line>
<line>308</line>
</file>
</directive>
<directive id="Core.EscapeNonASCIICharacters">
<file name="HTMLPurifier/Encoder.php">
<line>304</line>
</file>
</directive>
<directive id="Output.CommentScriptContents">
<file name="HTMLPurifier/Generator.php">
<line>56</line>
</file>
</directive>
<directive id="Output.SortAttr">
<file name="HTMLPurifier/Generator.php">
<line>57</line>
</file>
</directive>
<directive id="Output.FlashCompat">
<file name="HTMLPurifier/Generator.php">
<line>58</line>
</file>
</directive>
<directive id="Output.TidyFormat">
<file name="HTMLPurifier/Generator.php">
<line>87</line>
</file>
</directive>
<directive id="Output.Newline">
<file name="HTMLPurifier/Generator.php">
<line>101</line>
</file>
</directive>
<directive id="HTML.BlockWrapper">
<file name="HTMLPurifier/HTMLDefinition.php">
<line>222</line>
</file>
</directive>
<directive id="HTML.Parent">
<file name="HTMLPurifier/HTMLDefinition.php">
<line>230</line>
</file>
</directive>
<directive id="HTML.AllowedElements">
<file name="HTMLPurifier/HTMLDefinition.php">
<line>247</line>
</file>
</directive>
<directive id="HTML.AllowedAttributes">
<file name="HTMLPurifier/HTMLDefinition.php">
<line>248</line>
</file>
</directive>
<directive id="HTML.Allowed">
<file name="HTMLPurifier/HTMLDefinition.php">
<line>251</line>
</file>
</directive>
<directive id="HTML.ForbiddenElements">
<file name="HTMLPurifier/HTMLDefinition.php">
<line>337</line>
</file>
</directive>
<directive id="HTML.ForbiddenAttributes">
<file name="HTMLPurifier/HTMLDefinition.php">
<line>338</line>
</file>
</directive>
<directive id="HTML.Trusted">
<file name="HTMLPurifier/HTMLModuleManager.php">
<line>202</line>
</file>
<file name="HTMLPurifier/Lexer.php">
<line>258</line>
</file>
<file name="HTMLPurifier/HTMLModule/Image.php">
<line>27</line>
</file>
<file name="HTMLPurifier/Lexer/DirectLex.php">
<line>36</line>
</file>
<file name="HTMLPurifier/Strategy/RemoveForeignElements.php">
<line>23</line>
</file>
</directive>
<directive id="HTML.AllowedModules">
<file name="HTMLPurifier/HTMLModuleManager.php">
<line>209</line>
</file>
</directive>
<directive id="HTML.CoreModules">
<file name="HTMLPurifier/HTMLModuleManager.php">
<line>210</line>
</file>
</directive>
<directive id="HTML.Proprietary">
<file name="HTMLPurifier/HTMLModuleManager.php">
<line>221</line>
</file>
</directive>
<directive id="HTML.SafeObject">
<file name="HTMLPurifier/HTMLModuleManager.php">
<line>226</line>
</file>
</directive>
<directive id="HTML.SafeEmbed">
<file name="HTMLPurifier/HTMLModuleManager.php">
<line>229</line>
</file>
</directive>
<directive id="Attr.IDBlacklist">
<file name="HTMLPurifier/IDAccumulator.php">
<line>26</line>
</file>
</directive>
<directive id="Core.Language">
<file name="HTMLPurifier/LanguageFactory.php">
<line>88</line>
</file>
</directive>
<directive id="Core.LexerImpl">
<file name="HTMLPurifier/Lexer.php">
<line>76</line>
</file>
</directive>
<directive id="Core.MaintainLineNumbers">
<file name="HTMLPurifier/Lexer.php">
<line>80</line>
</file>
<file name="HTMLPurifier/Lexer/DirectLex.php">
<line>48</line>
</file>
</directive>
<directive id="Core.ConvertDocumentToFragment">
<file name="HTMLPurifier/Lexer.php">
<line>267</line>
</file>
</directive>
<directive id="URI.">
<file name="HTMLPurifier/URIDefinition.php">
<line>55</line>
</file>
<file name="HTMLPurifier/URIFilter/Munge.php">
<line>12</line>
</file>
</directive>
<directive id="URI.Host">
<file name="HTMLPurifier/URIDefinition.php">
<line>64</line>
</file>
</directive>
<directive id="URI.Base">
<file name="HTMLPurifier/URIDefinition.php">
<line>65</line>
</file>
</directive>
<directive id="URI.DefaultScheme">
<file name="HTMLPurifier/URIDefinition.php">
<line>72</line>
</file>
</directive>
<directive id="URI.AllowedSchemes">
<file name="HTMLPurifier/URISchemeRegistry.php">
<line>41</line>
</file>
</directive>
<directive id="URI.OverrideAllowedSchemes">
<file name="HTMLPurifier/URISchemeRegistry.php">
<line>42</line>
</file>
</directive>
<directive id="URI.Disable">
<file name="HTMLPurifier/AttrDef/URI.php">
<line>28</line>
</file>
</directive>
<directive id="Core.ColorKeywords">
<file name="HTMLPurifier/AttrDef/CSS/Color.php">
<line>12</line>
</file>
<file name="HTMLPurifier/AttrDef/HTML/Color.php">
<line>12</line>
</file>
</directive>
<directive id="Attr.AllowedClasses">
<file name="HTMLPurifier/AttrDef/HTML/Class.php">
<line>18</line>
</file>
</directive>
<directive id="Attr.ForbiddenClasses">
<file name="HTMLPurifier/AttrDef/HTML/Class.php">
<line>19</line>
</file>
</directive>
<directive id="Attr.AllowedFrameTargets">
<file name="HTMLPurifier/AttrDef/HTML/FrameTarget.php">
<line>15</line>
</file>
</directive>
<directive id="Attr.EnableID">
<file name="HTMLPurifier/AttrDef/HTML/ID.php">
<line>20</line>
</file>
</directive>
<directive id="Attr.IDPrefix">
<file name="HTMLPurifier/AttrDef/HTML/ID.php">
<line>26</line>
</file>
</directive>
<directive id="Attr.IDPrefixLocal">
<file name="HTMLPurifier/AttrDef/HTML/ID.php">
<line>28</line>
<line>31</line>
</file>
</directive>
<directive id="Attr.IDBlacklistRegexp">
<file name="HTMLPurifier/AttrDef/HTML/ID.php">
<line>54</line>
</file>
</directive>
<directive id="Attr.">
<file name="HTMLPurifier/AttrDef/HTML/LinkTypes.php">
<line>30</line>
</file>
</directive>
<directive id="Attr.DefaultTextDir">
<file name="HTMLPurifier/AttrTransform/BdoDir.php">
<line>13</line>
</file>
</directive>
<directive id="Core.RemoveInvalidImg">
<file name="HTMLPurifier/AttrTransform/ImgRequired.php">
<line>18</line>
</file>
<file name="HTMLPurifier/Strategy/RemoveForeignElements.php">
<line>20</line>
</file>
</directive>
<directive id="Attr.DefaultInvalidImage">
<file name="HTMLPurifier/AttrTransform/ImgRequired.php">
<line>19</line>
</file>
</directive>
<directive id="Attr.DefaultImageAlt">
<file name="HTMLPurifier/AttrTransform/ImgRequired.php">
<line>25</line>
</file>
</directive>
<directive id="Attr.DefaultInvalidImageAlt">
<file name="HTMLPurifier/AttrTransform/ImgRequired.php">
<line>33</line>
</file>
</directive>
<directive id="HTML.Attr.Name.UseCDATA">
<file name="HTMLPurifier/AttrTransform/Name.php">
<line>11</line>
</file>
<file name="HTMLPurifier/HTMLModule/Name.php">
<line>13</line>
</file>
</directive>
<directive id="Core.EscapeInvalidChildren">
<file name="HTMLPurifier/ChildDef/Required.php">
<line>62</line>
</file>
</directive>
<directive id="Cache.SerializerPath">
<file name="HTMLPurifier/DefinitionCache/Serializer.php">
<line>91</line>
</file>
</directive>
<directive id="Filter.ExtractStyleBlocks.TidyImpl">
<file name="HTMLPurifier/Filter/ExtractStyleBlocks.php">
<line>41</line>
</file>
</directive>
<directive id="Filter.ExtractStyleBlocks.Scope">
<file name="HTMLPurifier/Filter/ExtractStyleBlocks.php">
<line>65</line>
</file>
</directive>
<directive id="Filter.ExtractStyleBlocks.Escaping">
<file name="HTMLPurifier/Filter/ExtractStyleBlocks.php">
<line>123</line>
</file>
</directive>
<directive id="HTML.MaxImgLength">
<file name="HTMLPurifier/HTMLModule/Image.php">
<line>14</line>
</file>
<file name="HTMLPurifier/HTMLModule/SafeEmbed.php">
<line>13</line>
</file>
<file name="HTMLPurifier/HTMLModule/SafeObject.php">
<line>19</line>
</file>
</directive>
<directive id="HTML.TidyLevel">
<file name="HTMLPurifier/HTMLModule/Tidy.php">
<line>45</line>
</file>
</directive>
<directive id="HTML.TidyAdd">
<file name="HTMLPurifier/HTMLModule/Tidy.php">
<line>49</line>
</file>
</directive>
<directive id="HTML.TidyRemove">
<file name="HTMLPurifier/HTMLModule/Tidy.php">
<line>50</line>
</file>
</directive>
<directive id="AutoFormat.PurifierLinkify.DocURL">
<file name="HTMLPurifier/Injector/PurifierLinkify.php">
<line>15</line>
</file>
</directive>
<directive id="AutoFormat.RemoveEmpty.RemoveNbsp">
<file name="HTMLPurifier/Injector/RemoveEmpty.php">
<line>12</line>
</file>
</directive>
<directive id="AutoFormat.RemoveEmpty.RemoveNbsp.Exceptions">
<file name="HTMLPurifier/Injector/RemoveEmpty.php">
<line>13</line>
</file>
</directive>
<directive id="Core.AggressivelyFixLt">
<file name="HTMLPurifier/Lexer/DOMLex.php">
<line>44</line>
</file>
</directive>
<directive id="Core.DirectLexLineNumberSyncInterval">
<file name="HTMLPurifier/Lexer/DirectLex.php">
<line>70</line>
</file>
</directive>
<directive id="Core.EscapeInvalidTags">
<file name="HTMLPurifier/Strategy/MakeWellFormed.php">
<line>45</line>
</file>
<file name="HTMLPurifier/Strategy/RemoveForeignElements.php">
<line>19</line>
</file>
</directive>
<directive id="Core.RemoveScriptContents">
<file name="HTMLPurifier/Strategy/RemoveForeignElements.php">
<line>25</line>
</file>
</directive>
<directive id="Core.HiddenElements">
<file name="HTMLPurifier/Strategy/RemoveForeignElements.php">
<line>26</line>
</file>
</directive>
<directive id="URI.HostBlacklist">
<file name="HTMLPurifier/URIFilter/HostBlacklist.php">
<line>8</line>
</file>
</directive>
<directive id="URI.MungeResources">
<file name="HTMLPurifier/URIFilter/Munge.php">
<line>14</line>
</file>
</directive>
<directive id="URI.MungeSecretKey">
<file name="HTMLPurifier/URIFilter/Munge.php">
<line>15</line>
</file>
</directive>
</usage>

View File

@@ -3,7 +3,7 @@
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"><head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta name="description" content="Specification for HTML Purifier's advanced API for defining custom filtering behavior." />
<meta name="description" content="Functional specification for HTML Purifier's advanced API for defining custom filtering behavior." />
<link rel="stylesheet" type="text/css" href="style.css" />
<title>Advanced API - HTML Purifier</title>
@@ -16,11 +16,198 @@
<div id="index">Return to the <a href="index.html">index</a>.</div>
<div id="home"><a href="http://htmlpurifier.org/">HTML Purifier</a> End-User Documentation</div>
<p>
Please see <a href="enduser-customize.html">Customize!</a>
</p>
<p>HTML Purifier currently natively supports only a subset of HTML's
allowed elements, attributes, and behavior; specifically, this subset
is the set of elements that are safe for untrusted users to use.
However, HTML Purifier is often utilized to ensure standards-compliance
from input that is trusted (making it a sort of Tidy substitute),
and often users need to define new elements or attributes. The
advanced API is oriented specifically for these use-cases.</p>
<p>Our goals are to let the user:</p>
<dl>
<dt>Select</dt>
<dd><ul>
<li>Doctype</li>
<!-- <li>Filterset</li> -->
<li>Elements / Attributes / Modules</li>
<li>Tidy</li>
</ul></dd>
<dt>Customize</dt>
<dd><ul>
<li>Attributes</li>
<li>Elements</li>
<!--<li>Doctypes</li>-->
</ul></dd>
</dl>
<h2>Select</h2>
<p>For basic use, the user will have to specify some basic parameters. This
is not strictly necessary, as HTML Purifier's default setting will always
output safe code, but is required for standards-compliant output.</p>
<h3>Selecting a Doctype</h3>
<p>The first thing to select is the <strong>doctype</strong>. This
is essential for standards-compliant output.</p>
<p class="technical">This identifier is based
on the name the W3C has given to the document type and <em>not</em>
the DTD identifier.</p>
<p>This parameter is set via the configuration object:</p>
<pre>$config->set('HTML', 'Doctype', 'XHTML 1.0 Transitional');</pre>
<p>Due to historical reasons, the default doctype is XHTML 1.0
Transitional, however, we really shouldn't be guessing what the user's
doctype is. Fortunantely, people who can't be bothered to set this won't
be bothered when their pages stop validating.</p>
<h3>Selecting Elements / Attributes / Modules</h3>
<p>HTML Purifier will, by default, allow as many elements and attributes
as possible. However, a user may decide to roll their own filterset by
selecting modules, elements and attributes to allow for their own
specific use-case. This can be done using %HTML.Allowed:</p>
<pre>$config->set('HTML', 'Allowed', 'a[href|title],em,p,blockquote');</pre>
<p class="technical">The directive %HTML.Allowed is a convenience feature
that may be fully expressed with the legacy interface.</p>
<p>We currently support another interface from older versions:</p>
<pre>$config->set('HTML', 'AllowedElements', 'a,em,p,blockquote');
$config->set('HTML', 'AllowedAttributes', 'a.href,a.title');</pre>
<p>A user may also choose to allow modules using a specialized
directive:</p>
<pre>$config->set('HTML', 'AllowedModules', 'Hypertext,Text,Lists');</pre>
<p>But it is not expected that this feature will be widely used.</p>
<p class="technical">Module selection will work slightly differently
from the other AllowedElements and AllowedAttributes directives by
directly modifying the doctype you are operating in, in the spirit of
XHTML 1.1's modularization. We stop users from shooting themselves in the
foot by mandating the modules in %HTML.CoreModules be used.</p>
<p class="technical">Modules are distinguished from regular elements by the
case of their first letter. While XML distinguishes between and allows
lower and uppercase letters in element names, XHTML uses only lower-case
element names for sake of consistency.</p>
<h3>Selecting Tidy</h3>
<p>The name of this segment of functionality is inspired off of Dave
Ragget's program HTML Tidy, which purported to help clean up HTML. In
HTML Purifier, Tidy functionality involves turning unsupported and
deprecated elements into standards-compliant ones, maintaining
backwards compatibility, and enforcing best practices.</p>
<p>This is a complicated feature, and is explained more in depth at
<a href="enduser-tidy.html">the Tidy documentation page</a>.</p>
<!--
<h3>Unified selector</h3>
<p>Because selecting each and every one of these configuration options
is a chore, we may wish to offer a specialized configuration method
for selecting a filterset. Possibility:</p>
<pre>function selectFilter($doctype, $filterset, $tidy)</pre>
<p>...which is simply a light wrapper over the individual configuration
calls. A custom config file format or text format could also be adopted.</p>
-->
<h2>Customize</h2>
<p>By reviewing topic posts in the support forum, we determined that
there were two primarily demanded customization features people wanted:
to add an attribute to an existing element, and to add an element.
Thus, we'll want to create convenience functions for these common
use-cases.</p>
<p>Note that the functions described here are only available if
a raw copy of <code>HTMLPurifier_HTMLDefinition</code> was retrieved.
Furthermore, caching may prevent your changes from immediately
being seen: consult <a href="enduser-customize.html">enduser-customize.html</a> on how
to work around this.</p>
<h3>Attributes</h3>
<p>An attribute is bound to an element by a name and has a specific
<code>AttrDef</code> that validates it. The interface is therefore:</p>
<pre>function addAttribute($element, $attribute, $attribute_def);</pre>
<p>Example of the functionality in action:</p>
<pre>$def->addAttribute('a', 'rel', 'Enum#nofollow');</pre>
<p>The <code>$attribute_def</code> value is flexible,
to make things simpler. It can be a literal object or:</p>
<ul>
<!--<li>Class name: We'll instantiate it for you</li>
<li>Function name: We'll create an <code>HTMLPurifier_AttrDef_Anonymous</code>
class with that function registered as a callback.</li>-->
<li>String attribute type: We'll use <code>HTMLPurifier_AttrTypes</code>
to resolve it for you. Any data that follows a hash mark (#) will
be used to customize the attribute type: in the example above,
we specify which values for Enum to allow.</li>
</ul>
<h3>Elements</h3>
<p>An element requires certain information as specified by
<code>HTMLPurifier_ElementDef</code>. However, not all of it is necessary,
the usual things required are:</p>
<ul>
<li>Attributes</li>
<li>Content model/type</li>
<li>Registration in a content set</li>
</ul>
<p>This suggests an API like this:</p>
<pre>function addElement($element, $type, $contents,
$attr_collections = array(); $attributes = array());</pre>
<p>Each parameter explained in depth:</p>
<dl>
<dt><code>$element</code></dt>
<dd>Element name, ex. 'label'</dd>
<dt><code>$type</code></dt>
<dd>Content set to register in, ex. 'Inline' or 'Flow'</dd>
<dt><code>$contents</code></dt>
<dd>Description of allowed children. This is a merged form of
<code>HTMLPurifier_ElementDef</code>'s member variables
<code>$content_model</code> and <code>$content_model_type</code>,
where the form is <q>Type: Model</q>, ex. 'Optional: Inline'.
There are also a number of predefined templates one may use.</dd>
<dt><code>$attr_collections</code></dt>
<dd>Array (or string if only one) of attribute collection(s) to
merge into the attributes array.</dd>
<dt><code>$attributes</code></dt>
<dd>Array of attribute names to attribute definitions, much like
the above-described attribute customization.</dd>
</dl>
<p>A possible usage:</p>
<pre>$def->addElement('font', 'Inline', 'Optional: Inline', 'Common',
array('color' => 'Color'));</pre>
<p>See <code>HTMLPurifier/HTMLModule.php</code> for details.</p>
<div id="version">$Id$</div>
</body></html>
<!-- vim: et sw=4 sts=4
-->

View File

@@ -17,6 +17,7 @@ a lot of strtolower() calls, no legit casing
URI - multiple regular expressions; missing validation for parts (?)
CSS - parser doesn't accept advanced CSS (fringe)
Number - constructor interface inconsistent with Integer
ConfigSchema - redefinition is a mess
Strategy
FixNesting - cannot bubble nodes out of structures, duplicated checks
for special-case parent node
@@ -25,5 +26,3 @@ URIScheme - needs to have callable generic checks
mailto - doesn't validate emails, doesn't validate querystring
news - doesn't validate opaque path
nntp - doesn't constrain path
vim: et sw=4 sts=4

View File

@@ -1,79 +0,0 @@
Configuration Backwards-Compatibility Breaks
In version 4.0.0, the configuration subsystem (composed of the outwards
facing Config class, as well as the ConfigSchema and ConfigSchema_Interchange
subsystems), was significantly revamped to make use of property lists.
While most of the changes are internal, some internal APIs were changed for the
sake of clarity. HTMLPurifier_Config was kept completely backwards compatible,
although some of the functions were retrofitted with an unambiguous alternate
syntax. Both of these changes are discussed in this document.
1. Outwards Facing Changes
--------------------------------------------------------------------------------
The HTMLPurifier_Config class now takes an alternate syntax. The general rule
is:
If you passed $namespace, $directive, pass "$namespace.$directive"
instead.
An example:
$config->set('HTML', 'Allowed', 'p');
becomes:
$config->set('HTML.Allowed', 'p');
New configuration options may have more than one namespace, they might
look something like %Filter.YouTube.Blacklist. While you could technically
set it with ('HTML', 'YouTube.Blacklist'), the logical extension
('HTML', 'YouTube', 'Blacklist') does not work.
The old API will still work, but will emit E_USER_NOTICEs.
2. Internal API Changes
--------------------------------------------------------------------------------
Some overarching notes: we've completely eliminated the notion of namespace;
it's now an informal construct for organizing related configuration directives.
Also, the validation routines for keys (formerly "$namespace.$directive")
have been completely relaxed. I don't think it really should be necessary.
2.1 HTMLPurifier_ConfigSchema
First off, if you're interfacing with this class, you really shouldn't.
HTMLPurifier_ConfigSchema_Builder_ConfigSchema is really the only class that
should ever be creating HTMLPurifier_ConfigSchema, and HTMLPurifier_Config the
only class that should be reading it.
All namespace related methods were removed; they are completely unnecessary
now. Any $namespace, $name arguments must be replaced with $key (where
$key == "$namespace.$name"), including for addAlias().
The $info and $defaults member variables are no longer indexed as
[$namespace][$name]; they are now indexed as ["$namespace.$name"].
All deprecated methods were finally removed, after having yelled at you as
an E_USER_NOTICE for a while now.
2.2 HTMLPurifier_ConfigSchema_Interchange
Member variable $namespaces was removed.
2.3 HTMLPurifier_ConfigSchema_Interchange_Id
Member variable $namespace and $directive removed; member variable $key added.
Any method that took $namespace, $directive now takes $key.
2.4 HTMLPurifier_ConfigSchema_Interchange_Namespace
Removed.
vim: et sw=4 sts=4

View File

@@ -1,164 +0,0 @@
Configuration naming
HTML Purifier 4.0.0 features a new configuration naming system that
allows arbitrary nesting of namespaces. While there are certain cases
in which using two namespaces is obviously better (the canonical example
is where we were using AutoFormatParam to contain directives for AutoFormat
parameters), it is unclear whether or not a general migration to highly
namespaced directives is a good idea or not.
== Case studies ==
=== Attr.* ===
We have a dead duck HTML.Attr.Name.UseCDATA which migrated before we decided
to think this out thoroughly.
We currently have a large number of directives in the Attr.* namespace.
These directives tweak the behavior of some HTML attributes. They have
the properties:
* While they apply to only one attribute at a time, the attribute can
span over multiple elements (not necessarily all attributes, either).
The information of which elements it impacts is either omitted or
informally stated (EnableID applies to all elements, DefaultImageAlt
applies to <img> tags, AllowedRev doesn't say but only applies to a tags).
* There is a certain degree of clustering that could be applied, especially
to the ID directives. The clustering could be done with respect to
what element/attribute was used, i.e.
*.id -> EnableID, IDBlacklistRegexp, IDBlacklist, IDPrefixLocal, IDPrefix
img.src -> DefaultInvalidImage
img.alt -> DefaultImageAlt, DefaultInvalidImageAlt
bdo.dir -> DefaultTextDir
a.rel -> AllowedRel
a.rev -> AllowedRev
a.target -> AllowedFrameTargets
a.name -> Name.UseCDATA
* The directives often reference generic attribute types that were specified
in the DTD/specification. However, some of the behavior specifically relies
on the fact that other use cases of the attribute are not, at current,
supported by HTML Purifier.
AllowedRel, AllowedRev -> heavily <a> specific; if <link> ends up being
allowed, we will also have to give users specificity there (we also
want to preserve generality) DTD %Linktypes, HTML5 distinguishes
between <link> and <a>/<area>
AllowedFrameTargets -> heavily <a> specific, but also used by <area>
and <form>. Transitional DTD %FrameTarget, not present in strict,
HTML5 calls them "browsing contexts"
Default*Image* -> as a default parameter, is almost entirely exlcusive
to <img>
EnableID -> global attribute
Name.UseCDATA -> heavily <a> specific, but has heavy other usage by
many things
== AutoFormat.* ==
These have the fairly normal pluggable architecture that lends itself to
large amounts of namespaces (pluggability may be the key to figuring
out when gratuitous namespacing is good.) Properties:
* Boolean directives are fair game for being namespaced: for example,
RemoveEmpty.RemoveNbsp triggers RemoveEmpty.RemoveNbsp.Exceptions,
the latter of which only makes sense when RemoveEmpty.RemoveNbsp
is set to true. (The same applies to RemoveNbsp too)
The AutoFormat string is a bit long, but is the only bit of repeated
context.
== Core.* ==
Core is the potpourri of directives, mostly regarding some minor behavioral
tweaks for HTML handling abilities.
AggressivelyFixLt
ConvertDocumentToFragment
DirectLexLineNumberSyncInterval
LexerImpl
MaintainLineNumbers
Lexer
CollectErrors
Language
Error handling (Language is ostensibly a little more general, but
it's only used for error handling right now)
ColorKeywords
CSS and HTML
Encoding
EscapeNonASCIICharacters
Character encoding
EscapeInvalidChildren
EscapeInvalidTags
HiddenElements
RemoveInvalidImg
Lexing/Output
RemoveScriptContents
Deprecated
== HTML.* ==
AllowedAttributes
AllowedElements
AllowedModules
Allowed
ForbiddenAttributes
ForbiddenElements
Element set tuning
BlockWrapper
Child def advanced twiddle
CoreModules
CustomDoctype
Advanced HTMLModuleManager twiddles
DefinitionID
DefinitionRev
Caching
Doctype
Parent
Strict
XHTML
Global environment
MaxImgLength
Attribute twiddle? (applies to two attributes)
Proprietary
SafeEmbed
SafeObject
Trusted
Extra functionality/tagsets
TidyAdd
TidyLevel
TidyRemove
Tidy
== Output.* ==
These directly affect the output of Generator. These are all advanced
twiddles.
== URI.* ==
AllowedSchemes
OverrideAllowedSchemes
Scheme tuning
Base
DefaultScheme
Host
Global environment
DefinitionID
DefinitionRev
Caching
DisableExternalResources
DisableExternal
DisableResources
Disable
Contextual/authority tuning
HostBlacklist
Authority tuning
MakeAbsolute
MungeResources
MungeSecretKey
Munge
Transformation behavior (munge can be grouped)

View File

@@ -1,412 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta name="description" content="Describes config schema framework in HTML Purifier." />
<link rel="stylesheet" type="text/css" href="./style.css" />
<title>Config Schema - HTML Purifier</title>
</head>
<body>
<h1>Config Schema</h1>
<div id="filing">Filed under Development</div>
<div id="index">Return to the <a href="index.html">index</a>.</div>
<div id="home"><a href="http://htmlpurifier.org/">HTML Purifier</a> End-User Documentation</div>
<p>
HTML Purifier has a fairly complex system for configuration. Users
interact with a <code>HTMLPurifier_Config</code> object to
set configuration directives. The values they set are validated according
to a configuration schema, <code>HTMLPurifier_ConfigSchema</code>.
</p>
<p>
The schema is mostly transparent to end-users, but if you're doing development
work for HTML Purifier and need to define a new configuration directive,
you'll need to interact with it. We'll also talk about how to define
userspace configuration directives at the very end.
</p>
<h2>Write a directive file</h2>
<p>
Directive files define configuration directives to be used by
HTML Purifier. They are placed in <code>library/HTMLPurifier/ConfigSchema/schema/</code>
in the form <code><em>Namespace</em>.<em>Directive</em>.txt</code> (I
couldn't think of a more descriptive file extension.)
Directive files are actually what we call <code>StringHash</code>es,
i.e. associative arrays represented in a string form reminiscent of
<a href="http://qa.php.net/write-test.php">PHPT</a> tests. Here's a
sample directive file, <code>Test.Sample.txt</code>:
</p>
<pre>Test.Sample
TYPE: string/null
DEFAULT: NULL
ALLOWED: 'foo', 'bar'
VALUE-ALIASES: 'baz' => 'bar'
VERSION: 3.1.0
--DESCRIPTION--
This is a sample configuration directive for the purposes of the
&lt;code&gt;dev-config-schema.html&lt;code&gt; documentation.
--ALIASES--
Test.Example</pre>
<p>
Each of these segments has a specific meaning:
</p>
<table class="table">
<thead>
<tr>
<th>Key</th>
<th>Example</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>ID</td>
<td>Test.Sample</td>
<td>The name of the directive, in the form Namespace.Directive
(implicitly the first line)</td>
</tr>
<tr>
<td>TYPE</td>
<td>string/null</td>
<td>The type of variable this directive accepts. See below for
details. You can also add <code>/null</code> to the end of
any basic type to allow null values too.</td>
</tr>
<tr>
<td>DEFAULT</td>
<td>NULL</td>
<td>A parseable PHP expression of the default value.</td>
</tr>
<tr>
<td>DESCRIPTION</td>
<td>This is a...</td>
<td>An HTML description of what this directive does.</td>
</tr>
<tr>
<td>VERSION</td>
<td>3.1.0</td>
<td><em>Recommended</em>. The version of HTML Purifier this directive was added.
Directives that have been around since 1.0.0 don't have this,
but any new ones should.</td>
</tr>
<tr>
<td>ALIASES</td>
<td>Test.Example</td>
<td><em>Optional</em>. A comma separated list of aliases for this directive.
This is most useful for backwards compatibility and should
not be used otherwise.</td>
</tr>
<tr>
<td>ALLOWED</td>
<td>'foo', 'bar'</td>
<td><em>Optional</em>. Set of allowed value for a directive,
a comma separated list of parseable PHP expressions. This
is only allowed string, istring, text and itext TYPEs.</td>
</tr>
<tr>
<td>VALUE-ALIASES</td>
<td>'baz' =&gt; 'bar'</td>
<td><em>Optional</em>. Mapping of one value to another, and
should be a comma separated list of keypair duples. This
is only allowed string, istring, text and itext TYPEs.</td>
</tr>
<tr>
<td>DEPRECATED-VERSION</td>
<td>3.1.0</td>
<td><em>Not shown</em>. Indicates that the directive was
deprecated this version.</td>
</tr>
<tr>
<td>DEPRECATED-USE</td>
<td>Test.NewDirective</td>
<td><em>Not shown</em>. Indicates what new directive should be
used instead. Note that the directives will functionally be
different, although they should offer the same functionality.
If they are identical, use an alias instead.</td>
</tr>
<tr>
<td>EXTERNAL</td>
<td>CSSTidy</td>
<td><em>Not shown</em>. Indicates if there is an external library
the user will need to download and install to use this configuration
directive. As of right now, this is merely a Google-able name; future
versions may also provide links and instructions.</td>
</tr>
</tbody>
</table>
<p>
Some notes on format and style:
</p>
<ul>
<li>
Each of these keys can be expressed in the short format
(<code>KEY: Value</code>) or the long format
(<code>--KEY--</code> with value beneath). You must use the
long format if multiple lines are needed, or if a long format
has been used already (that's why <code>ALIASES</code> in our
example is in the long format); otherwise, it's user preference.
</li>
<li>
The HTML descriptions should be wrapped at about 80 columns; do
not rely on editor word-wrapping.
</li>
</ul>
<p>
Also, as promised, here is the set of possible types:
</p>
<table class="table">
<thead>
<tr>
<th>Type</th>
<th>Example</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>string</td>
<td>'Foo'</td>
<td><a href="http://docs.php.net/manual/en/language.types.string.php">String</a> without newlines</td>
</tr>
<tr>
<td>istring</td>
<td>'foo'</td>
<td>Case insensitive ASCII string without newlines</td>
</tr>
<tr>
<td>text</td>
<td>"A<em>\n</em>b"</td>
<td>String with newlines</td>
</tr>
<tr>
<td>itext</td>
<td>"a<em>\n</em>b"</td>
<td>Case insensitive ASCII string without newlines</td>
</tr>
<tr>
<td>int</td>
<td>23</td>
<td>Integer</td>
</tr>
<tr>
<td>float</td>
<td>3.0</td>
<td>Floating point number</td>
</tr>
<tr>
<td>bool</td>
<td>true</td>
<td>Boolean</td>
</tr>
<tr>
<td>lookup</td>
<td>array('key' =&gt; true)</td>
<td>Lookup array, used with <code>isset($var[$key])</code></td>
</tr>
<tr>
<td>list</td>
<td>array('f', 'b')</td>
<td>List array, with ordered numerical indexes</td>
</tr>
<tr>
<td>hash</td>
<td>array('key' =&gt; 'val')</td>
<td>Associative array of keys to values</td>
</tr>
<tr>
<td>mixed</td>
<td>new stdclass</td>
<td>Any PHP variable is fine</td>
</tr>
</tbody>
</table>
<p>
The examples represent what will be returned out of the configuration
object; users have a little bit of leeway when setting configuration
values (for example, a lookup value can be specified as a list;
HTML Purifier will flip it as necessary.) These types are defined
in <a href="http://repo.or.cz/w/htmlpurifier.git?a=blob;hb=HEAD;f=library/HTMLPurifier/VarParser.php">
library/HTMLPurifier/VarParser.php</a>.
</p>
<p>
For more information on what values are allowed, and how they are parsed,
consult <a href="http://repo.or.cz/w/htmlpurifier.git?a=blob;hb=HEAD;f=library/HTMLPurifier/ConfigSchema/InterchangeBuilder.php">
library/HTMLPurifier/ConfigSchema/InterchangeBuilder.php</a>, as well
as <a href="http://repo.or.cz/w/htmlpurifier.git?a=blob;hb=HEAD;f=library/HTMLPurifier/ConfigSchema/Interchange/Directive.php">
library/HTMLPurifier/ConfigSchema/Interchange/Directive.php</a> for
the semantics of the parsed values.
</p>
<h2>Refreshing the cache</h2>
<p>
You may have noticed that your directive file isn't doing anything
yet. That's because it hasn't been added to the runtime
<code>HTMLPurifier_ConfigSchema</code> instance. Run
<code>maintenance/generate-schema-cache.php</code> to fix this.
If there were no errors, you're good to go! Don't forget to add
some unit tests for your functionality!
</p>
<p>
If you ever make changes to your configuration directives, you
will need to run this script again.
</p>
<h2>Adding in-house schema definitions</h2>
<p>
Placing stuff directly in HTML Purifier's source tree is generally not a
good idea, so HTML Purifier 4.0.0+ has some facilities in place to make your
life easier.
</p>
<p>
The first is to pass an extra parameter to <code>maintenance/generate-schema-cache.php</code>
with the location of your directory (relative or absolute path will do). For example,
if I'm storing my custom definitions in <em>/var/htmlpurifier/myschema</em>, run:
<code>php maintenance/generate-schema-cache.php /var/htmlpurifier/myschema</code>.
</p>
<p>
Alternatively, you can create a small loader PHP file in the HTML Purifier base
directory named <code>config-schema.php</code> (this is the same directory
you would place a <code>test-settings.php</code> file). In this file, add
the following line for each directory you want to load:
</p>
<pre>$builder-&gt;buildDir($interchange, '/var/htmlpurifier/myschema');</pre>
<p>You can even load a single file using:</p>
<pre>$builder-&gt;buildFile($interchange, '/var/htmlpurifier/myschema/MyApp.Directive.txt');</pre>
<p>Storing custom definitions that you don't plan on sending back upstream in
a separate directory is <em>definitely</em> a good idea! Additionally, picking
a good namespace can go a long way to saving you grief if you want to use
someone else's change, but they picked the same name, or if HTML Purifier
decides to add support for a configuration directive that has the same name.</p>
<!-- TODO: how to name directives that rely on naming conventions -->
<h2>Errors</h2>
<p>
All directive files go through a rigorous validation process
through <a href="http://repo.or.cz/w/htmlpurifier.git?a=blob;hb=HEAD;f=library/HTMLPurifier/ConfigSchema/Validator.php">
library/HTMLPurifier/ConfigSchema/Validator.php</a>, as well
as some basic checks during building. While
listing every error out here is out-of-scope for this document, we
can give some general tips for interpreting error messages.
There are two types of errors: builder errors and validation errors.
</p>
<h3>Builder errors</h3>
<blockquote>
<p>
<strong>Exception:</strong> Expected type string, got
integer in DEFAULT in directive hash 'Ns.Dir'
</p>
</blockquote>
<p>
You can identify a builder error by the keyword "directive hash."
These are the easiest to deal with, because they directly correspond
with your directive file. Find the offending directive file (which
is the directive hash plus the .txt extension), find the
offending index ("in DEFAULT" means the DEFAULT key) and fix the error.
This particular error would occur if your default value is not the same
type as TYPE.
</p>
<h3>Validation errors</h3>
<blockquote>
<p>
<strong>Exception:</strong> Alias 3 in valueAliases in directive
'Ns.Dir' must be a string
</p>
</blockquote>
<p>
These are a little trickier, because we're not actually validating
your directive file, or even the direct string hash representation.
We're validating an Interchange object, and the error messages do
not mention any string hash keys.
</p>
<p>
Nevertheless, it's not difficult to figure out what went wrong.
Read the "context" statements in reverse:
</p>
<dl>
<dt>in directive 'Ns.Dir'</dt>
<dd>This means we need to look at the directive file <code>Ns.Dir.txt</code></dd>
<dt>in valueAliases</dt>
<dd>There's no key actually called this, but there's one that's close:
VALUE-ALIASES. Indeed, that's where to look.</dd>
<dt>Alias 3</dt>
<dd>The value alias that is equal to 3 is the culprit.</dd>
</dl>
<p>
In this particular case, you're not allowed to alias integers values to
strings values.
</p>
<p>
The most difficult part is translating the Interchange member variable (valueAliases)
into a directive file key (VALUE-ALIASES), but there's a one-to-one
correspondence currently. If the two formats diverge, any discrepancies
will be described in <a href="http://repo.or.cz/w/htmlpurifier.git?a=blob;hb=HEAD;f=library/HTMLPurifier/ConfigSchema/InterchangeBuilder.php">
library/HTMLPurifier/ConfigSchema/InterchangeBuilder.php</a>.
</p>
<h2>Internals</h2>
<p>
Much of the configuration schema framework's codebase deals with
shuffling data from one format to another, and doing validation on this
data.
The keystone of all of this is the <code>HTMLPurifier_ConfigSchema_Interchange</code>
class, which represents the purest, parsed representation of the schema.
</p>
<p>
Hand-writing this data is unwieldy, however, so we write directive files.
These directive files are parsed by <code>HTMLPurifier_StringHashParser</code>
into <code>HTMLPurifier_StringHash</code>es, which then
are run through <code>HTMLPurifier_ConfigSchema_InterchangeBuilder</code>
to construct the interchange object.
</p>
<p>
From the interchange object, the data can be siphoned into other forms
using <code>HTMLPurifier_ConfigSchema_Builder</code> subclasses.
For example, <code>HTMLPurifier_ConfigSchema_Builder_ConfigSchema</code>
generates a runtime <code>HTMLPurifier_ConfigSchema</code> object,
which <code>HTMLPurifier_Config</code> uses to validate its incoming
data. There is also an XML serializer, which is used to build documentation.
</p>
</body>
</html>
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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta name="description" content="Discusses when to flush HTML Purifier's various caches." />
<link rel="stylesheet" type="text/css" href="./style.css" />
<title>Flushing the Purifier - HTML Purifier</title>
</head>
<body>
<h1>Flushing the Purifier</h1>
<div id="filing">Filed under Development</div>
<div id="index">Return to the <a href="index.html">index</a>.</div>
<div id="home"><a href="http://htmlpurifier.org/">HTML Purifier</a> End-User Documentation</div>
<p>
If you've been poking around the various folders in HTML Purifier,
you may have noticed the <code>maintenance</code> directory. Almost
all of these scripts are devoted to flushing out the various caches
HTML Purifier uses. Normal users don't have to worry about this:
regular library usage is transparent. However, when doing development
work on HTML Purifier, you may find you have to flush one of the
caches.
</p>
<p>
As a general rule of thumb, run <code>flush.php</code> whenever you make
any <em>major</em> changes, or when tests start mysteriously failing.
In more detail, run this script if:
</p>
<ul>
<li>
You added new source files to HTML Purifier's main library.
(see <code>generate-includes.php</code>)
</li>
<li>
You modified the configuration schema (see
<code>generate-schema-cache.php</code>). This usually means
adding or modifying files in <code>HTMLPurifier/ConfigSchema/schema/</code>,
although in rare cases modifying <code>HTMLPurifier/ConfigSchema.php</code>
will also require this.
</li>
<li>
You modified a Definition, or its subsystems. The most usual candidate
is <code>HTMLPurifier/HTMLDefinition.php</code>, which also encompasses
the files in <code>HTMLPurifier/HTMLModule/</code> as well as if you've
<a href="enduser-customize.html">customizing definitions</a> without
the cache disabled. (see <code>flush-generation-cache.php</code>)
</li>
<li>
You modified source files, and have been using the standalone
version from the full installation. (see <code>generate-standalone.php</code>)
</li>
</ul>
<p>
You can check out the corresponding scripts for more information on what they
do.
</p>
</body></html>
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INCLUDES, AUTOLOAD, BYTECODE CACHES and OPTIMIZATION
The Problem
-----------
HTML Purifier contains a number of extra components that are not used all
of the time, only if the user explicitly specifies that we should use
them.
Some of these optional components are optionally included (Filter,
Language, Lexer, Printer), while others are included all the time
(Injector, URIFilter, HTMLModule, URIScheme). We will stipulate that these
are all developer specified: it is conceivable that certain Tokens are not
used, but this is user-dependent and should not be trusted.
We should come up with a consistent way to handle these things and ensure
that we get the maximum performance when there is bytecode caches and
when there are not. Unfortunately, these two goals seem contrary to each
other.
A peripheral issue is the performance of ConfigSchema, which has been
shown take a large, constant amount of initialization time, and is
intricately linked to the issue of includes due to its pervasive use
in our plugin architecture.
Pros and Cons
-------------
We will assume that user-based extensions will be included by them.
Conditional includes:
Pros:
- User management is simplified; only a single directive needs to be set
- Only necessary code is included
Cons:
- Doesn't play nicely with opcode caches
- Adds complexity to standalone version
- Optional configuration directives are not exposed without a little
extra coaxing (not implemented yet)
Include it all:
Pros:
- User management is still simple
- Plays nicely with opcode caches and standalone version
- All configuration directives are present
Cons:
- Lots of (how much?) extra code is included
- Classes that inherit from external libraries will cause compile
errors
Build an include stub (Let's do this!):
Pros:
- Only necessary code is included
- Plays nicely with opcode caches and standalone version
- require (without once) can be used, see above
- Could further extend as a compilation to one file
Cons:
- Not implemented yet
- Requires user intervention and use of a command line script
- Standalone script must be chained to this
- More complex and compiled-language-like
- Requires a whole new class of system-wide configuration directives,
as configuration objects can be reused
- Determining what needs to be included can be complex (see above)
- No way of autodetecting dynamically instantiated classes
- Might be slow
Include stubs
-------------
This solution may be "just right" for users who are heavily oriented
towards performance. However, there are a number of picky implementation
details to work out beforehand.
The number one concern is how to make the HTML Purifier files "work
out of the box", while still being able to easily get them into a form
that works with this setup. As the codebase stands right now, it would
be necessary to strip out all of the require_once calls. The only way
we could get rid of the require_once calls is to use __autoload or
use the stub for all cases (which might not be a bad idea).
Aside
-----
An important thing to remember, however, is that these require_once's
are valuable data about what classes a file needs. Unfortunately, there's
no distinction between whether or not the file is needed all the time,
or whether or not it is one of our "optional" files. Thus, it is
effectively useless.
Deprecated
----------
One of the things I'd like to do is have the code search for any classes
that are explicitly mentioned in the code. If a class isn't mentioned, I
get to assume that it is "optional," i.e. included via introspection.
The choice is either to use PHP's tokenizer or use regexps; regexps would
be faster but a tokenizer would be more correct. If this ends up being
unfeasible, adding dependency comments isn't a bad idea. (This could
even be done automatically by search/replacing require_once, although
we'd have to manually inspect the results for the optional requires.)
NOTE: This ends up not being necessary, as we're going to make the user
figure out all the extra classes they need, and only include the core
which is predetermined.
Using the autoload framework with include stubs works nicely with
introspective classes: instead of having to have require_once inside
the function, we can let autoload do the work; we simply need to
new $class or accept the object straight from the caller. Handling filters
becomes a simple matter of ticking off configuration directives, and
if ConfigSchema spits out errors, adding the necessary includes. We could
also use the autoload framework as a fallback, in case the user forgets
to make the include, but doesn't really care about performance.
Insight
-------
All of this talk is merely a natural extension of what our current
standalone functionality does. However, instead of having our code
perform the includes, or attempting to inline everything that possibly
could be used, we boot the issue to the user, making them include
everything or setup the fallback autoload handler.
Configuration Schema
--------------------
A common deficiency for all of the conditional include setups (including
the dynamically built include PHP stub) is that if one of this
conditionally included files includes a configuration directive, it
is not accessible to configdoc. A stopgap solution for this problem is
to have it piggy-back off of the data in the merge-library.php script
to figure out what extra files it needs to include, but if the file also
inherits classes that don't exist, we're in big trouble.
I think it's high time we centralized the configuration documentation.
However, the type checking has been a great boon for the library, and
I'd like to keep that. The compromise is to use some other source, and
then parse it into the ConfigSchema internal format (sans all of those
nasty documentation strings which we really don't need at runtime) and
serialize that for future use.
The next question is that of format. XML is very verbose, and the prospect
of setting defaults in it gives me willies. However, this may be necessary.
Splitting up the file into manageable chunks may alleviate this trouble,
and we may be even want to create our own format optimized for specifying
configuration. It might look like (based off the PHPT format, which is
nicely compact yet unambiguous and human-readable):
Core.HiddenElements
TYPE: lookup
DEFAULT: array('script', 'style') // auto-converted during processing
--ALIASES--
Core.InvisibleElements, Core.StupidElements
--DESCRIPTION--
<p>
Blah blah
</p>
The first line is the directive name, the lines after that prior to the
first --HEADER-- block are single-line values, and then after that
the multiline values are there. No value is restricted to a particular
format: DEFAULT could very well be multiline if that would be easier.
This would make it insanely easy, also, to add arbitrary extra parameters,
like:
VERSION: 3.0.0
ALLOWED: 'none', 'light', 'medium', 'heavy' // this is wrapped in array()
EXTERNAL: CSSTidy // this would be documented somewhere else with a URL
The final loss would be that you wouldn't know what file the directive
was used in; with some clever regexps it should be possible to
figure out where $config->get($ns, $d); occurs. Reflective calls to
the configuration object is mitigated by the fact that getBatch is
used, so we can simply talk about that in the namespace definition page.
This might be slow, but it would only happen when we are creating
the documentation for consumption, and is sugar.
We can put this in a schema/ directory, outside of HTML Purifier. The serialized
data gets treated like entities.ser.
The final thing that needs to be handled is user defined configurations.
They can be added at runtime using ConfigSchema::registerDirectory()
which globs the directory and grabs all of the directives to be incorporated
in. Then, the result is saved. We may want to take advantage of the
DefinitionCache framework, although it is not altogether certain what
configuration directives would be used to generate our key (meta-directives!)
Further thoughts
----------------
Our master configuration schema will only need to be updated once
every new version, so it's easily versionable. User specified
schema files are far more volatile, but it's far too expensive
to check the filemtimes of all the files, so a DefinitionRev style
mechanism works better. However, we can uniquely identify the
schema based on the directories they loaded, so there's no need
for a DefinitionId until we give them full programmatic control.
These variables should be directly incorporated into ConfigSchema,
and ConfigSchema should handle serialization. Some refactoring will be
necessary for the DefinitionCache classes, as they are built with
Config in mind. If the user changes something, the cache file gets
rebuilt. If the version changes, the cache file gets rebuilt. Since
our unit tests flush the caches before we start, and the operation is
pretty fast, this will not negatively impact unit testing.
One last thing: certain configuration directives require that files
get added. They may even be specified dynamically. It is not a good idea
for the HTMLPurifier_Config object to be used directly for such matters.
Instead, the userland code should explicitly perform the includes. We may
put in something like:
REQUIRES: HTMLPurifier_Filter_ExtractStyleBlocks
To indicate that if that class doesn't exist, and the user is attempting
to use the directive, we should fatally error out. The stub includes the core files,
and the user includes everything else. Any reflective things like new
$class would be required to tie in with the configuration.
It would work very well with rarely used configuration options, but it
wouldn't be so good for "core" parts that can be disabled. In such cases
the core include file would need to be modified, and the only way
to properly do this is use the configuration object. Once again, our
ability to create cache keys saves the day again: we can create arbitrary
stub files for arbitrary configurations and include those. They could
even be the single file affairs. The only thing we'd need to include,
then, would be HTMLPurifier_Config! Then, the configuration object would
load the library.
An aside...
-----------
One questions, however, the wisdom of letting PHP files write other PHP
files. It seems like a recipe for disaster, or at least lots of headaches
in highly secured setups, where PHP does not have the ability to write
to its root. In such cases, we could use sticky bits or tell the user
to manually generate the file.
The other troublesome bit is actually doing the calculations necessary.
For certain cases, it's simple (such as URIScheme), but for AttrDef
and HTMLModule the dependency trees are very complex in relation to
%HTML.Allowed and friends. I think that this idea should be shelved
and looked at a later, less insane date.
An interesting dilemma presents itself when a configuration form is offered
to the user. Normally, the configuration object is not accessible without
editing PHP code; this facility changes thing. The sensible thing to do
is stipulate that all classes required by the directives you allow must
be included.
Unit testing
------------
Setting up the parsing and translation into our existing format would not
be difficult to do. It might represent a good time for us to rethink our
tests for these facilities; as creative as they are, they are often hacky
and require public visibility for things that ought to be protected.
This is especially applicable for our DefinitionCache tests.
Migration
---------
Because we are not *adding* anything essentially new, it should be trivial
to write a script to take our existing data and dump it into the new format.
Well, not trivial, but fairly easy to accomplish. Primary implementation
difficulties would probably involve formatting the file nicely.
Backwards-compatibility
-----------------------
I expect that the ConfigSchema methods should stick around for a little bit,
but display E_USER_NOTICE warnings that they are deprecated. This will
require documentation!
New stuff
---------
VERSION: Version number directive was introduced
DEPRECATED-VERSION: If the directive was deprecated, when was it deprecated?
DEPRECATED-USE: If the directive was deprecated, what should the user use now?
REQUIRES: What classes does this configuration directive require, but are
not part of the HTML Purifier core?
vim: et sw=4 sts=4

View File

@@ -35,7 +35,7 @@ help you find the correct functionality more quickly. Here they are:</p>
<dt>Harness and Test are reserved class names for unit tests</dt>
<dd>The suffix <code>Test</code> indicates that the class is a subclass of UnitTestCase
(of the Simpletest library) and is testable. "Harness" indicates a subclass
of UnitTestCase that is not meant to be run but to be extended into
of UnitTestCase that is not meant to be run but to be extended into
concrete test cases and contains custom test methods (i.e. assert*())</dd>
<dt>Class names do not necessarily represent inheritance hierarchies</dt>
@@ -51,7 +51,7 @@ help you find the correct functionality more quickly. Here they are:</p>
all must be present in order for proper functioning.</dd>
<dt>Abbreviations are avoided</dt>
<dd>We try to avoid abbreviations as much as possible, but in some cases,
<dd>We try to avoid abbreviations as much as possible, but in some cases,
abbreviated version is more readable than the full version. Here, we
list common abbreviations:
<ul>
@@ -77,7 +77,6 @@ help you find the correct functionality more quickly. Here they are:</p>
</dl>
</body></html>
<div id="version">$Id$</div>
<!-- vim: et sw=4 sts=4
-->
</body></html>

View File

@@ -23,11 +23,11 @@ that itch, put it here!</p>
<ul>
<li>Make Tokens Flyweights (may prove problematic, probably not worth it)</li>
<li>Rewrite regexps into PHP code</li>
<li>Serialize the Definition object</li>
<li>Batch regexp validation (do as many per function call as possible)</li>
<li>Parallelize strategies</li>
</ul>
</body></html>
<div id="version">$Id$</div>
<!-- vim: et sw=4 sts=4
-->
</body></html>

View File

@@ -34,17 +34,12 @@ thead th {text-align:left;padding:0.1em;background-color:#EEE;}
<div id="index">Return to the <a href="index.html">index</a>.</div>
<div id="home"><a href="http://htmlpurifier.org/">HTML Purifier</a> End-User Documentation</div>
<p>
<strong>Warning:</strong> This table is kept for historical purposes and
is not being actively updated.
</p>
<h2>Key</h2>
<table cellspacing="0"><tbody>
<tr><td class="impl-yes">Implemented</td></tr>
<tr><td class="impl-partial">Partially implemented</td></tr>
<tr><td class="impl-no">Not priority to implement</td></tr>
<tr><td class="impl-no">Will not implement</td></tr>
<tr><td class="danger">Dangerous attribute/property</td></tr>
<tr><td class="css1">Present in CSS1</td></tr>
<tr><td class="feature">Feature, requires extra work</td></tr>
@@ -123,7 +118,6 @@ thead th {text-align:left;padding:0.1em;background-color:#EEE;}
<tbody>
<tr><th colspan="2">Table</th></tr>
<tr class="impl-yes"><td>border-collapse</td><td>ENUM(collapse, seperate)</td></tr>
<tr class="impl-yes"><td>border-space</td><td>MULTIPLE</td></tr>
<tr class="impl-yes"><td>caption-side</td><td>ENUM(top, bottom)</td></tr>
<tr class="feature"><td>empty-cells</td><td>ENUM(show, hide), No IE support makes this useless,
possible fix with &amp;nbsp;? Unknown release milestone.</td></tr>
@@ -153,7 +147,7 @@ thead th {text-align:left;padding:0.1em;background-color:#EEE;}
Depends on background-image</td></tr>
<tr class="css1 impl-yes"><td>background-position</td><td>Depends on background-image</td></tr>
<tr class="danger impl-no"><td>cursor</td><td>Dangerous but fluffy</td></tr>
<tr class="danger impl-yes"><td>display</td><td>ENUM(...), Dangerous but interesting;
<tr class="danger css1"><td>display</td><td>ENUM(...), Dangerous but interesting;
will not implement list-item, run-in (Opera only) or table (no IE);
inline-block has incomplete IE6 support and requires -moz-inline-box
for Mozilla. Unknown target milestone.</td></tr>
@@ -172,7 +166,7 @@ thead th {text-align:left;padding:0.1em;background-color:#EEE;}
Mostly supported. Unknown target milestone.</td></tr>
<tr><td>page-break-inside</td><td>ENUM(avoid, auto), Opera only. Unknown target milestone.</td></tr>
<tr class="impl-no"><td>quotes</td><td>May be dropped from CSS2, fairly useless for inline context</td></tr>
<tr class="danger impl-yes"><td>visibility</td><td>ENUM(visible, hidden, collapse),
<tr class="impl-no"><td>visibility</td><td>ENUM(visible, hidden, collapse),
Dangerous</td></tr>
<tr class="css1 feature impl-partial"><td>white-space</td><td>ENUM(normal, pre, nowrap, pre-wrap,
pre-line), Spotty implementation:
@@ -303,7 +297,6 @@ Mozilla on inside and needs -moz-outline, no IE support.</td></tr>
</table>
</body></html>
<div id="version">$Id$</div>
<!-- vim: et sw=4 sts=4
-->
</body></html>

View File

@@ -18,11 +18,12 @@
<div id="home"><a href="http://htmlpurifier.org/">HTML Purifier</a> End-User Documentation</div>
<p>
HTML Purifier has this quirk where if you try to allow certain elements or
attributes, HTML Purifier will tell you that it's not supported, and that
you should go to the forums to find out how to implement it. Well, this
document is how to implement elements and attributes which HTML Purifier
doesn't support out of the box.
You may have heard of the <a href="dev-advanced-api.html">Advanced API</a>.
If you're interested in reading dry prose and boring functional
specifications, feel free to click that link to get a no-nonsense overview
on the Advanced API. For the rest of us, there's this tutorial. By the time
you're finished reading this, you should have a pretty good idea on
how to implement custom tags and attributes that HTML Purifier may not have.
</p>
<h2>Is it necessary?</h2>
@@ -31,7 +32,7 @@
Before we even write any code, it is paramount to consider whether or
not the code we're writing is necessary or not. HTML Purifier, by default,
contains a large set of elements and attributes: large enough so that
<em>any</em> element or attribute in XHTML 1.0 or 1.1 (and its HTML variants)
<em>any</em> element or attribute in XHTML 1.0 (and its HTML variant)
that can be safely used by the general public is implemented.
</p>
@@ -75,12 +76,22 @@
<h3>XHTML 1.1</h3>
<p>
As of HTMLPurifier 2.1.0, we have implemented the
We have not implemented the
<a href="http://www.w3.org/TR/2001/REC-ruby-20010531/">Ruby module</a>,
which defines a set of tags
for publishing short annotations for text, used mostly in Japanese
and Chinese school texts, but applicable for positioning any text (not
limited to translations) above or below other corresponding text.
and Chinese school texts.
</p>
<h3>XHTML 2.0</h3>
<p>
<a href="http://www.w3.org/TR/xhtml2/">XHTML 2.0</a> is still a
working draft, so any elements introduced in the
specification have not been implemented and will not be implemented
until we get a recommendation or proposal. Because XHTML 2.0 is
an entirely new markup language, implementing rules for it will be
no easy task.
</p>
<h3>HTML 5</h3>
@@ -144,9 +155,9 @@
</p>
<pre>$config = HTMLPurifier_Config::createDefault();
$config-&gt;set('HTML.DefinitionID', 'enduser-customize.html tutorial');
$config-&gt;set('HTML.DefinitionRev', 1);
$def = $config-&gt;getHTMLDefinition(true);</pre>
$config->set('HTML', 'DefinitionID', 'enduser-customize.html tutorial');
$config->set('HTML', 'DefinitionRev', 1);
$def =& $config->getHTMLDefinition(true);</pre>
<p>
Assuming that HTML Purifier has already been properly loaded (hint:
@@ -194,15 +205,15 @@ $def = $config-&gt;getHTMLDefinition(true);</pre>
<h2>Turn off caching</h2>
<p>
To make development easier, we're going to temporarily turn off
To make development easier, we're going to temporarily turn off
definition caching:
</p>
<pre>$config = HTMLPurifier_Config::createDefault();
$config-&gt;set('HTML.DefinitionID', 'enduser-customize.html tutorial');
$config-&gt;set('HTML.DefinitionRev', 1);
<strong>$config-&gt;set('Cache.DefinitionImpl', null); // TODO: remove this later!</strong>
$def = $config-&gt;getHTMLDefinition(true);</pre>
$config->set('HTML', 'DefinitionID', 'enduser-customize.html tutorial');
$config->set('HTML', 'DefinitionRev', 1);
<strong>$config->set('Core', 'DefinitionCache', null); // remove this later!</strong>
$def =& $config->getHTMLDefinition(true);</pre>
<p>
A few things should be mentioned about the caching mechanism before
@@ -255,10 +266,10 @@ $def = $config-&gt;getHTMLDefinition(true);</pre>
</p>
<pre>$config = HTMLPurifier_Config::createDefault();
$config-&gt;set('HTML.DefinitionID', 'enduser-customize.html tutorial');
$config-&gt;set('HTML.DefinitionRev', 1);
$config-&gt;set('Cache.DefinitionImpl', null); // remove this later!
$def = $config-&gt;getHTMLDefinition(true);
$config->set('HTML', 'DefinitionID', 'enduser-customize.html tutorial');
$config->set('HTML', 'DefinitionRev', 1);
$config->set('Core', 'DefinitionCache', null); // remove this later!
$def =& $config->getHTMLDefinition(true);
<strong>$def->addAttribute('a', 'target', 'Enum#_blank,_self,_target,_top');</strong></pre>
<p>
@@ -360,10 +371,10 @@ $def = $config-&gt;getHTMLDefinition(true);
<p>
For a complete list, consult
<a href="http://repo.or.cz/w/htmlpurifier.git?a=blob;hb=HEAD;f=library/HTMLPurifier/AttrTypes.php"><code>library/HTMLPurifier/AttrTypes.php</code></a>;
<a href="http://htmlpurifier.org/svnroot/htmlpurifier/trunk/library/HTMLPurifier/AttrTypes.php"><code>library/HTMLPurifier/AttrTypes.php</code></a>;
more information on attributes that accept parameters can be found on their
respective includes in
<a href="http://repo.or.cz/w/htmlpurifier.git?a=tree;hb=HEAD;f=library/HTMLPurifier/AttrDef"><code>library/HTMLPurifier/AttrDef</code></a>.
<a href="http://htmlpurifier.org/svnroot/htmlpurifier/trunk/library/HTMLPurifier/AttrDef/"><code>library/HTMLPurifier/AttrDef</code></a>.
</p>
<p>
@@ -373,11 +384,11 @@ $def = $config-&gt;getHTMLDefinition(true);
</p>
<pre>$config = HTMLPurifier_Config::createDefault();
$config-&gt;set('HTML.DefinitionID', 'enduser-customize.html tutorial');
$config-&gt;set('HTML.DefinitionRev', 1);
$config-&gt;set('Cache.DefinitionImpl', null); // remove this later!
$def = $config-&gt;getHTMLDefinition(true);
<strong>$def-&gt;addAttribute('a', 'target', new HTMLPurifier_AttrDef_Enum(
$config->set('HTML', 'DefinitionID', 'enduser-customize.html tutorial');
$config->set('HTML', 'DefinitionRev', 1);
$config->set('Core', 'DefinitionCache', null); // remove this later!
$def =& $config->getHTMLDefinition(true);
<strong>$def->addAttribute('a', 'target', new HTMLPurifier_AttrDef_Enum(
array('_blank','_self','_target','_top')
));</strong></pre>
@@ -389,8 +400,8 @@ $def = $config-&gt;getHTMLDefinition(true);
<p>
Adding attributes is really small-fry stuff, though, and it was possible
to add them (albeit a bit more wordy) prior to 2.0. The real gem of
the Advanced API is adding elements. There are five questions to
to add them (albeit a bit more wordy) prior to 2.0. The real gem of
the Advanced API is adding elements. There are five questions to
ask when adding a new element:
</p>
@@ -481,11 +492,10 @@ $def = $config-&gt;getHTMLDefinition(true);
<p>
The <code>(%flow;)*</code> indicates the allowed children of the
<code>li</code> tag: <code>li</code> allows any number of flow
elements as its children. (The <code>- O</code> allows the closing tag to be
omitted, though in XML this is not allowed.) In HTML Purifier,
we'd write it like <code>Flow</code> (here's where the content sets
we were discussing earlier come into play). There are three shorthand
content models you can specify:
elements as its children. In HTML Purifier, we'd write it like
<code>Flow</code> (here's where the content sets we were
discussing earlier come into play). There are three shorthand content models you
can specify:
</p>
<table class="table">
@@ -584,7 +594,7 @@ $def = $config-&gt;getHTMLDefinition(true);
be nuked. This is why there is are specific content model types like
Optional and Required: while they could be implemented as <code>Custom:
(valid | elements)*</code>, the custom classes contain special recovery
measures that make sure as much of the user's original content gets
measures that make sure as much of the user's original content gets
through. HTML Purifier's core, as a rule, does not use Custom.
</p>
@@ -658,22 +668,12 @@ $def = $config-&gt;getHTMLDefinition(true);
Common is a combination of the above-mentioned collections.
</p>
<p class="aside">
Readers familiar with the modularization may have noticed that the Core
attribute collection differs from that specified by the <a
href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_commonatts">abstract
modules of the XHTML Modularization 1.1</a>. We believe this section
to be in error, as <code>br</code> permits the use of the <code>style</code>
attribute even though it uses the <code>Core</code> collection, and
the DTD and XML Schemas supplied by W3C support our interpretation.
</p>
<h3>Attributes</h3>
<p>
If you didn't read the <a href="#addAttribute">earlier section on
If you didn't read the <a href="#addAttribute">previous section on
adding attributes</a>, read it now. The last parameter is simply
an array of attribute names to attribute implementations, in the exact
array of attribute names to attribute implementations, in the exact
same format as <code>addAttribute()</code>.
</p>
@@ -712,7 +712,7 @@ $def = $config-&gt;getHTMLDefinition(true);
or more flow elements, but no nested <code>form</code>s</strong></li>
<li>What attributes does the element allow that are general? <strong>Common</strong></li>
<li>What attributes does the element allow that are specific to this element? <strong>A whole bunch, see ATTLIST;
we're going to do the vital ones: <code>action</code>, <code>method</code> and <code>name</code></strong></li>
we're going to the vital ones: <code>action</code>, <code>method</code> and <code>name</code></strong></li>
</ol>
<p>
@@ -720,14 +720,14 @@ $def = $config-&gt;getHTMLDefinition(true);
</p>
<pre>$config = HTMLPurifier_Config::createDefault();
$config-&gt;set('HTML.DefinitionID', 'enduser-customize.html tutorial');
$config-&gt;set('HTML.DefinitionRev', 1);
$config-&gt;set('Cache.DefinitionImpl', null); // remove this later!
$def = $config-&gt;getHTMLDefinition(true);
$def-&gt;addAttribute('a', 'target', new HTMLPurifier_AttrDef_Enum(
$config->set('HTML', 'DefinitionID', 'enduser-customize.html tutorial');
$config->set('HTML', 'DefinitionRev', 1);
$config->set('Core', 'DefinitionCache', null); // remove this later!
$def =& $config->getHTMLDefinition(true);
$def->addAttribute('a', 'target', new HTMLPurifier_AttrDef_Enum(
array('_blank','_self','_target','_top')
));
<strong>$form = $def-&gt;addElement(
<strong>$form =& $def->addElement(
'form', // name
'Block', // content set
'Flow', // allowed children
@@ -738,7 +738,7 @@ $def-&gt;addAttribute('a', 'target', new HTMLPurifier_AttrDef_Enum(
'name' => 'ID'
)
);
$form-&gt;excludes = array('form' => true);</strong></pre>
$form->excludes = array('form' => true);</strong></pre>
<p>
Each of the parameters corresponds to one of the questions we asked.
@@ -752,7 +752,7 @@ $form-&gt;excludes = array('form' => true);</strong></pre>
<p>
And that's all there is to it! Implementing the rest of the form
module is left as an exercise to the user; to see more examples
check the <a href="http://repo.or.cz/w/htmlpurifier.git?a=tree;hb=HEAD;f=library/HTMLPurifier/HTMLModule"><code>library/HTMLPurifier/HTMLModule/</code></a> directory
check the <a href="http://htmlpurifier.org/svnroot/htmlpurifier/trunk/library/HTMLPurifier/HTMLModule/"><code>library/HTMLPurifier/HTMLModule/</code></a> directory
in your local HTML Purifier installation.
</p>
@@ -777,11 +777,10 @@ $form-&gt;excludes = array('form' => true);</strong></pre>
</p>
<ul>
<li><a href="http://repo.or.cz/w/htmlpurifier.git?a=blob;hb=HEAD;f=library/HTMLPurifier/HTMLModule.php"><code>library/HTMLPurifier/HTMLModule.php</code></a></li>
<li><a href="http://repo.or.cz/w/htmlpurifier.git?a=blob;hb=HEAD;f=library/HTMLPurifier/ElementDef.php"><code>library/HTMLPurifier/ElementDef.php</code></a></li>
<li><a href="http://htmlpurifier.org/svnroot/htmlpurifier/trunk/library/HTMLPurifier/HTMLModule.php"><code>library/HTMLPurifier/HTMLModule.php</code></a></li>
<li><a href="http://htmlpurifier.org/svnroot/htmlpurifier/trunk/library/HTMLPurifier/ElementDef.php"><code>library/HTMLPurifier/ElementDef.php</code></a></li>
</ul>
</body></html>
<div id="version">$Id: enduser-tidy.html 1158 2007-06-18 19:26:29Z Edward $</div>
<!-- vim: et sw=4 sts=4
-->
</body></html>

View File

@@ -31,7 +31,7 @@ by default.</p>
<p>IDs, however, are quite useful functionality to have, so if users start
complaining about broken anchors you'll probably want to turn them back on
with %Attr.EnableID. But before you go mucking around with the config
with %HTML.EnableAttrID. But before you go mucking around with the config
object, it's probably worth to take some precautions to keep your page
validating. Why?</p>
@@ -56,9 +56,9 @@ validating. Why?</p>
deal with the most obvious solution: preventing users from using any IDs that
appear elsewhere on the document. The method is simple:</p>
<pre>$config-&gt;set('Attr.EnableID', true);
$config-&gt;set('Attr.IDBlacklist' array(
'list', 'of', 'attribute', 'values', 'that', 'are', 'forbidden'
<pre>$config->set('HTML', 'EnableAttrID', true);
$config->set('Attr', 'IDBlacklist' array(
'list', 'of', 'attributes', 'that', 'are', 'forbidden'
));</pre>
<p>That being said, there are some notable drawbacks. First of all, you have to
@@ -71,9 +71,9 @@ to possible standards-compliance issues.</p>
<p>Furthermore, this position becomes untenable when a single web page must hold
multiple portions of user-submitted content. Since there's obviously no way
to find out before-hand what IDs users will use, the blacklist is helpless.
And since HTML Purifier validates each segment separately, perhaps doing
And even since HTML Purifier validates each segment seperately, perhaps doing
so at different times, it would be extremely difficult to dynamically update
the blacklist in between runs.</p>
the blacklist inbetween runs.</p>
<p>Finally, simply destroying the ID is extremely un-userfriendly behavior: after
all, they might have simply specified a duplicate ID by accident.</p>
@@ -88,8 +88,8 @@ all, they might have simply specified a duplicate ID by accident.</p>
<p>This method, too, is quite simple: add a prefix to all user IDs. With this
code:</p>
<pre>$config-&gt;set('Attr.EnableID', true);
$config-&gt;set('Attr.IDPrefix', 'user_');</pre>
<pre>$config->set('HTML', 'EnableAttrID', true);
$config->set('Attr', 'IDPrefix', 'user_');</pre>
<p>...this:</p>
@@ -109,7 +109,7 @@ user_ to the beginning.&quot;</p>
nothing about multiple HTML Purifier outputs on one page. Thus, we have
a second configuration value to piggy-back off of: %Attr.IDPrefixLocal:</p>
<pre>$config-&gt;set('Attr.IDPrefixLocal', 'comment' . $id . '_');</pre>
<pre>$config->set('Attr', 'IDPrefixLocal', 'comment' . $id . '_');</pre>
<p>This new attributes does nothing but append on to regular IDPrefix, but is
special in that it is volatile: it's value is determined at run-time and
@@ -137,12 +137,11 @@ anchors is beyond me.</p>
<p>To revert back to pre-1.2.0 behavior, simply:</p>
<pre>$config-&gt;set('Attr.EnableID', true);</pre>
<pre>$config->set('HTML', 'EnableAttrID', true);</pre>
<p>Don't come crying to me when your page mysteriously stops validating, though.</p>
<div id="version">$Id$</div>
</body>
</html>
<!-- vim: et sw=4 sts=4
-->

View File

@@ -55,5 +55,3 @@ HTML tags. Things like blog comments are, in all likelihood, most appropriately
written in an extremely restrictive set of markup that doesn't require
all this functionality (or not written in HTML at all), although this may
be changing in the future with the addition of levels of filtering.
vim: et sw=4 sts=4

View File

@@ -14,5 +14,3 @@ to be effective. Things to remember:
4. CSS: document pending
Explain which CSS styles we blocked and why.
vim: et sw=4 sts=4

View File

@@ -17,25 +17,25 @@
<div id="index">Return to the <a href="index.html">index</a>.</div>
<div id="home"><a href="http://htmlpurifier.org/">HTML Purifier</a> End-User Documentation</div>
<p>HTML Purifier is a very powerful library. But with power comes great
responsibility, in the form of longer execution times. Remember, this
library isn't lightly grazing over submitted HTML: it's deconstructing
the whole thing, rigorously checking the parts, and then putting it back
<p>HTML Purifier is a very powerful library. But with power comes great
responsibility, in the form of longer execution times. Remember, this
library isn't lightly grazing over submitted HTML: it's deconstructing
the whole thing, rigorously checking the parts, and then putting it back
together. </p>
<p>So, if it so turns out that HTML Purifier is kinda too slow for outbound
<p>So, if it so turns out that HTML Purifier is kinda too slow for outbound
filtering, you've got a few options: </p>
<h2>Inbound filtering</h2>
<p>Perform filtering of HTML when it's submitted by the user. Since the
user is already submitting something, an extra half a second tacked on
to the load time probably isn't going to be that huge of a problem.
Then, displaying the content is a simple a manner of outputting it
directly from your database/filesystem. The trouble with this method is
that your user loses the original text, and when doing edits, will be
handling the filtered text. While this may be a good thing, especially
if you're using a WYSIWYG editor, it can also result in data-loss if a
<p>Perform filtering of HTML when it's submitted by the user. Since the
user is already submitting something, an extra half a second tacked on
to the load time probably isn't going to be that huge of a problem.
Then, displaying the content is a simple a manner of outputting it
directly from your database/filesystem. The trouble with this method is
that your user loses the original text, and when doing edits, will be
handling the filtered text. While this may be a good thing, especially
if you're using a WYSIWYG editor, it can also result in data-loss if a
user makes a typo. </p>
<p>Example (non-functional):</p>
@@ -66,14 +66,14 @@ user makes a typo. </p>
<h2>Caching the filtered output</h2>
<p>Accept the submitted text and put it unaltered into the database, but
then also generate a filtered version and stash that in the database.
Serve the filtered version to readers, and the unaltered version to
editors. If need be, you can invalidate the cache and have the cached
filtered version be regenerated on the first page view. Pros? Full data
retention. Cons? It's more complicated, and opens other editors up to
XSS if they are using a WYSIWYG editor (to fix that, they'd have to be
able to get their hands on the *really* original text served in
<p>Accept the submitted text and put it unaltered into the database, but
then also generate a filtered version and stash that in the database.
Serve the filtered version to readers, and the unaltered version to
editors. If need be, you can invalidate the cache and have the cached
filtered version be regenerated on the first page view. Pros? Full data
retention. Cons? It's more complicated, and opens other editors up to
XSS if they are using a WYSIWYG editor (to fix that, they'd have to be
able to get their hands on the *really* original text served in
plaintext mode). </p>
<p>Example (non-functional):</p>
@@ -108,13 +108,10 @@ plaintext mode). </p>
<p>In short, inbound filtering is the simple option and caching is the
robust option (albeit with bigger storage requirements). </p>
<p>There is a third option, independent of the two we've discussed: profile
and optimize HTMLPurifier yourself. Be sure to report back your results
if you decide to do that! Especially if you port HTML Purifier to C++.
<p>There is a third option, independent of the two we've discussed: profile
and optimize HTMLPurifier yourself. Be sure to report back your results
if you decide to do that! Especially if you port HTML Purifier to C++.
<tt>;-)</tt></p>
</body>
</html>
<!-- vim: et sw=4 sts=4
-->

View File

@@ -22,7 +22,7 @@ out:</p>
<p class="emphasis">This ain't HTML Tidy!</p>
<p>Rather, Tidy stands for a cool set of Tidy-inspired features in HTML Purifier
<p>Rather, Tidy stands for a cool set of Tidy-inspired in HTML Purifier
that allows users to submit deprecated elements and attributes and get
valid strict markup back. For example:</p>
@@ -33,8 +33,8 @@ valid strict markup back. For example:</p>
<pre>&lt;div style=&quot;text-align:center;&quot;&gt;Centered&lt;/div&gt;</pre>
<p>...when this particular fix is run on the HTML. This tutorial will give
you the lowdown of what exactly HTML Purifier will do when Tidy
is on, and how to fine-tune this behavior. Once again, <strong>you do
you down the lowdown of what exactly HTML Purifier will do when Tidy
is on, and how to fine tune this behavior. Once again, <strong>you do
not need Tidy installed on your PHP to use these features!</strong></p>
<h2>What does it do?</h2>
@@ -50,7 +50,7 @@ not need Tidy installed on your PHP to use these features!</strong></p>
<h2>What are levels?</h2>
<p>Levels describe how aggressive the Tidy module should be when
<p>Levels describe how aggressive the Tidy module should be when
cleaning up HTML. There are four levels to pick: none, light, medium
and heavy. Each of these levels has a well-defined set of behavior
associated with it, although it may change depending on your doctype.</p>
@@ -76,7 +76,7 @@ associated with it, although it may change depending on your doctype.</p>
change the level of cleaning by setting the %HTML.TidyLevel configuration
directive:</p>
<pre>$config-&gt;set('HTML.TidyLevel', 'heavy'); // burn baby burn!</pre>
<pre>$config->set('HTML', 'TidyLevel', 'heavy'); // burn baby burn!</pre>
<h2>Is the light level really light?</h2>
@@ -165,17 +165,17 @@ smoketest</a>.</p>
so happy about the br@clear implementation. That's perfectly fine!
HTML Purifier will make accomodations:</p>
<pre>$config-&gt;set('HTML.Doctype', 'XHTML 1.0 Transitional');
$config-&gt;set('HTML.TidyLevel', 'heavy'); // all changes, minus...
<strong>$config-&gt;set('HTML.TidyRemove', 'br@clear');</strong></pre>
<pre>$config->set('HTML', 'Doctype', 'XHTML 1.0 Transitional');
$config->set('HTML', 'TidyLevel', 'heavy'); // all changes, minus...
<strong>$config->set('HTML', 'TidyRemove', 'br@clear');</strong></pre>
<p>That third line does the magic, removing the br@clear fix
from the module, ensuring that <code>&lt;br clear="both" /&gt;</code>
will pass through unharmed. The reverse is possible too:</p>
<pre>$config-&gt;set('HTML.Doctype', 'XHTML 1.0 Transitional');
$config-&gt;set('HTML.TidyLevel', 'none'); // no changes, plus...
<strong>$config-&gt;set('HTML.TidyAdd', 'p@align');</strong></pre>
<pre>$config->set('HTML', 'Doctype', 'XHTML 1.0 Transitional');
$config->set('HTML', 'TidyLevel', 'none'); // no changes, plus...
<strong>$config->set('HTML', 'TidyAdd', 'p@align');</strong></pre>
<p>In this case, all transformations are shut off, except for the p@align
one, which you found handy.</p>
@@ -221,11 +221,10 @@ general syntax:</p>
<p>The lowdown is, quite frankly, HTML Purifier's default settings are
probably good enough. The next step is to bump the level up to heavy,
and if that still doesn't satisfy your appetite, do some fine-tuning.
and if that still doesn't satisfy your appetite, do some fine tuning.
Other than that, don't worry about it: this all works silently and
effectively in the background.</p>
</body></html>
<div id="version">$Id$</div>
<!-- vim: et sw=4 sts=4
-->
</body></html>

View File

@@ -33,9 +33,9 @@
<pre>class HTMLPurifier_URIFilter_<strong>NameOfFilter</strong> extends HTMLPurifier_URIFilter
{
public $name = '<strong>NameOfFilter</strong>';
public function prepare($config) {}
public function filter(&$uri, $config, $context) {}
var $name = '<strong>NameOfFilter</strong>';
function prepare($config) {}
function filter(&$uri, $config, &$context) {}
}</pre>
<p>
@@ -56,12 +56,12 @@
<pre>class HTMLPurifier_URI
{
public $scheme, $userinfo, $host, $port, $path, $query, $fragment;
public function HTMLPurifier_URI($scheme, $userinfo, $host, $port, $path, $query, $fragment);
public function toString();
public function copy();
public function getSchemeObj($config, $context);
public function validate($config, $context);
var $scheme, $userinfo, $host, $port, $path, $query, $fragment;
function HTMLPurifier_URI($scheme, $userinfo, $host, $port, $path, $query, $fragment);
function toString();
function copy();
function getSchemeObj($config, &$context);
function validate($config, &$context);
}</pre>
<p>
@@ -92,7 +92,7 @@
</tbody></table>
<p>
Because the URI is presented to us in this form, and not
Because the URI is presented to us in this form, and not
<code>http://bob@example.com:8080/foo.php?q=string#hash</code>, it saves us
a lot of trouble in having to parse the URI every time we want to filter
it. For the record, the above URI has the following components:
@@ -130,26 +130,30 @@
</p>
<p>
Let's suppose I wanted to write a filter that converted links with a
custom <code>image</code> scheme to its corresponding real path on
our website:
Let's suppose I wanted to write a filter that de-internationalized domain
names by converting them to <a href="http://en.wikipedia.org/wiki/Punycode">Punycode</a>.
Assuming that <code>punycode_encode($input)</code> converts <code>$input</code> to
Punycode and returns <code>false</code> on failure:
</p>
<pre>class HTMLPurifier_URIFilter_TransformImageScheme extends HTMLPurifier_URIFilter
<pre>class HTMLPurifier_URIFilter_ConvertIDNToPunycode extends HTMLPurifier_URIFilter
{
public $name = 'TransformImageScheme';
public function filter(&$uri, $config, $context) {
if ($uri->scheme !== 'image') return true;
$img_name = $uri->path;
// Overwrite the previous URI object
$uri = new HTMLPurifier_URI('http', null, null, null, '/img/' . $img_name . '.png', null, null);
var $name = 'ConvertIDNToPunycode';
function filter(&$uri, $config, &$context) {
if (is_null($uri->host)) return true;
if ($uri->host == utf8_decode($uri->host)) {
// is ASCII, abort
return true;
}
$host = punycode_encode($uri->host);
if ($host === false) return false;
$uri->host = $host;
return true;
}
}</pre>
<p>
Notice I did not <code>return $uri;</code>. This filter would turn
<code>image:Foo</code> into <code>/img/Foo.png</code>.
Notice I did not <code>return $uri;</code>.
</p>
<h2>Activating your filter</h2>
@@ -159,46 +163,39 @@
to use it. Fortunately, this part's simple:
</p>
<pre>$uri = $config->getDefinition('URI');
$uri->addFilter(new HTMLPurifier_URIFilter_<strong>NameOfFilter</strong>(), $config);</pre>
<pre>$uri =& $config->getDefinition('URI');
$uri->addFilter(new HTMLPurifier_URIFilter_<strong>NameOfFilter</strong>());</pre>
<p>
After adding a filter, you won't be able to set configuration directives.
Structure your code accordingly.
If you want to be really fancy, you can define a configuration directive
for your filter and have HTML Purifier automatically manage whether or
not your filter gets loaded or not (this is how internal filters manage
things):
</p>
<!-- XXX: link to new documentation system -->
<h2>Post-filter</h2>
<p>
Remember our TransformImageScheme filter? That filter acted before we had
performed scheme validation; otherwise, the URI would have been filtered
out when it was discovered that there was no image scheme. Well, a post-filter
is run after scheme specific validation, so it's ideal for bulk
post-processing of URIs, including munging. To specify a URI as a post-filter,
set the <code>$post</code> member variable to TRUE.
</p>
<pre>class HTMLPurifier_URIFilter_MyPostFilter extends HTMLPurifier_URIFilter
{
public $name = 'MyPostFilter';
public $post = true;
// ... extra code here
}
<pre>HTMLPurifier_ConfigSchema::define(
'URI', '<strong>NameOfFilter</strong>', false, 'bool',
'<strong>What your filter does.</strong>'
);
$uri =& $config->getDefinition('URI', true);
$uri->registerFilter(new HTMLPurifier_URIFilter_<strong>NameOfFilter</strong>());
</pre>
<p>
Now, your filter will only be called when %URI.<strong>NameOfFilter</strong>
is set to true.
</p>
<h2>Examples</h2>
<p>
Check the
<a href="http://repo.or.cz/w/htmlpurifier.git?a=tree;hb=HEAD;f=library/HTMLPurifier/URIFilter">URIFilter</a>
directory for more implementation examples, and see <a href="proposal-new-directives.txt">the
<a href="http://htmlpurifier.org/svnroot/htmlpurifier/trunk/library/HTMLPurifier/URIFilter/">URIFilter</a>
directory for more implementation examples, and see <a href="http://htmlpurifier.org/svnroot/htmlpurifier/trunk/docs/proposal-new-directives.txt">the
new directives proposal document</a> for ideas on what could be implemented
as a filter.
</p>
</body></html>
<div id="version">$Id$</div>
<!-- vim: et sw=4 sts=4
-->
</body></html>

View File

@@ -5,6 +5,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta name="description" content="Describes the rationale for using UTF-8, the ramifications otherwise, and how to make the switch." />
<link rel="stylesheet" type="text/css" href="./style.css" />
<script defer="defer" type="text/javascript" src="./toc-gen.js"></script>
<style type="text/css">
.minor td {font-style:italic;}
</style>
@@ -95,7 +96,7 @@ which can be a rewarding (but difficult) task.</p>
<h2 id="findcharset">Finding the real encoding</h2>
<p>In the beginning, there was ASCII, and things were simple. But they
weren't good, for no one could write in Cyrillic or Thai. So there
weren't good, for no one could write in Cryllic or Thai. So there
exploded a proliferation of character encodings to remedy the problem
by extending the characters ASCII could express. This ridiculously
simplified version of the history of character encodings shows us that
@@ -106,7 +107,7 @@ there are now many character encodings floating around.</p>
interpret raw zeroes and ones into real characters. It
usually does this by pairing numbers with characters.</p>
<p>There are many different types of character encodings floating
around, but the ones we deal most frequently with are ASCII,
around, but the ones we deal most frequently with are ASCII,
8-bit encodings, and Unicode-based encodings.</p>
<ul>
<li><strong>ASCII</strong> is a 7-bit encoding based on the
@@ -118,8 +119,9 @@ there are now many character encodings floating around.</p>
see a page on the web, chances are it's encoded in one
of these encodings.</li>
<li><strong>Unicode-based encodings</strong> implement the
Unicode standard and include UTF-8, UTF-16 and UTF-32/UCS-4.
They go beyond 8-bits and support almost
Unicode standard and include UTF-8, UCS-2 and UTF-16.
They go beyond 8-bits (the first two are variable length,
while the second one uses 16-bits), and support almost
every language in the world. UTF-8 is gaining traction
as the dominant international encoding of the web.</li>
</ul>
@@ -136,7 +138,7 @@ browser:</p>
<dd>View &gt; Encoding: bulleted item is unofficial name</dd>
</dl>
<p>Internet Explorer won't give you the MIME (i.e. useful/real) name of the
<p>Internet Explorer won't give you the mime (i.e. useful/real) name of the
character encoding, so you'll have to look it up using their description.
Some common ones:</p>
@@ -214,12 +216,6 @@ if your <code>META</code> tag claims that either:</p>
<h2 id="fixcharset">Fixing the encoding</h2>
<p class="aside">The advice given here is for pages being served as
vanilla <code>text/html</code>. Different practices must be used
for <code>application/xml</code> or <code>application/xml+xhtml</code>, see
<a href="http://www.w3.org/TR/2002/NOTE-xhtml-media-types-20020430/">W3C's
document on XHTML media types</a> for more information.</p>
<p>If your <code>META</code> encoding and your real encoding match,
savvy! You can skip this section. If they don't...</p>
@@ -235,7 +231,7 @@ of your real encoding.</p>
why the character encoding should be explicitly stated. When the
browser isn't told what the character encoding of a text is, it
has to guess: and sometimes the guess is wrong. Hackers can manipulate
this guess in order to slip XSS past filters and then fool the
this guess in order to slip XSS pass filters and then fool the
browser into executing it as active code. A great example of this
is the <a href="http://shiflett.org/archive/177">Google UTF-7
exploit</a>.</p>
@@ -306,8 +302,7 @@ languages</a>. The appropriate code is:</p>
<p>...replacing UTF-8 with whatever your embedded encoding is.
This code must come before any output, so be careful about
stray whitespace in your application (i.e., any whitespace before
output excluding whitespace within &lt;?php ?&gt; tags).</p>
stray whitespace in your application.</p>
<h4 id="fixcharset-server-phpini">PHP ini directive</h4>
@@ -318,8 +313,8 @@ header call: <code><a href="http://php.net/ini.core#ini.default-charset">default
<p>...will also do the trick. If PHP is running as an Apache module (and
not as FastCGI, consult
<a href="http://php.net/phpinfo">phpinfo</a>() for details), you can even use htaccess to apply this property
across many PHP files:</p>
<a href="http://php.net/phpinfo">phpinfo</a>() for details), you can even use htaccess do apply this property
globally:</p>
<pre><a href="http://php.net/configuration.changes#configuration.changes.apache">php_value</a> default_charset &quot;UTF-8&quot;</pre>
@@ -365,11 +360,10 @@ to send anything at all:</p>
<pre><a href="http://httpd.apache.org/docs/1.3/mod/core.html#adddefaultcharset">AddDefaultCharset</a> Off</pre>
<p>...making your internal charset declaration (usually the <code>META</code> tags)
the sole source of character encoding
information. In these cases, it is <em>especially</em> important to make
sure you have valid <code>META</code> tags on your pages and all the
text before them is ASCII.</p>
<p>...making your <code>META</code> tags the sole source of
character encoding information. In these cases, it is
<em>especially</em> important to make sure you have valid <code>META</code>
tags on your pages and all the text before them is ASCII.</p>
<blockquote class="aside"><p>These directives can also be
placed in httpd.conf file for Apache, but
@@ -434,30 +428,28 @@ IIS to change character encodings, I'd be grateful.</p>
<p><code>META</code> tags are the most common source of embedded
encodings, but they can also come from somewhere else: XML
Declarations. They look like:</p>
processing instructions. They look like:</p>
<pre>&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;</pre>
<p>...and are most often found in XML documents (including XHTML).</p>
<p>For XHTML, this XML Declaration theoretically
<p>For XHTML, this processing instruction theoretically
overrides the <code>META</code> tag. In reality, this happens only when the
XHTML is actually served as legit XML and not HTML, which is almost always
never due to Internet Explorer's lack of support for
never due to Internet Explorer's lack of support for
<code>application/xhtml+xml</code> (even though doing so is often
argued to be <a href="http://www.hixie.ch/advocacy/xhtml">good
practice</a> and is required by the XHTML 1.1 specification).</p>
argued to be <a href="http://www.hixie.ch/advocacy/xhtml">good practice</a>).</p>
<p>For XML, however, this XML Declaration is extremely important.
<p>For XML, however, this processing instruction is extremely important.
Since most webservers are not configured to send charsets for .xml files,
this is the only thing a parser has to go on. Furthermore, the default
for XML files is UTF-8, which often butts heads with more common
ISO-8859-1 encoding (you see this in garbled RSS feeds).</p>
<p>In short, if you use XHTML and have gone through the
trouble of adding the XML Declaration, make sure it jives
with your <code>META</code> tags (which should only be present
if served in text/html) and HTTP headers.</p>
trouble of adding the XML header, make sure it jives
with your <code>META</code> tags and HTTP headers.</p>
<h3 id="fixcharset-internals">Inside the process</h3>
@@ -481,7 +473,7 @@ if we don't know it's character encoding? And how do we figure out
the character encoding, if we don't know the contents of the
<code>META</code> tag?</p>
<p>Fortunately for us, the characters we need to write the
<p>Fortunantely for us, the characters we need to write the
<code>META</code> are in ASCII, which is pretty much universal
over every character encoding that is in common use today. So,
all the web-browser has to do is parse all the way down until
@@ -489,7 +481,7 @@ it gets to the Content-Type tag, extract the character encoding
tag, then re-parse the document according to this new information.</p>
<p>Obviously this is complicated, so browsers prefer the simpler
and more efficient solution: get the character encoding from a
and more efficient solution: get the character encoding from a
somewhere other than the document itself, i.e. the HTTP headers,
much to the chagrin of HTML authors who can't set these headers.</p>
@@ -514,7 +506,7 @@ usage in one language sometimes requires the occasional special character
that, without surprise, is not available in your character set. Sometimes
developers get around this by adding support for multiple encodings: when
using Chinese, use Big5, when using Japanese, use Shift-JIS, when
using Greek, etc. Other times, they use character references with great
using Greek, etc. Other times, they use character entities with great
zeal.</p>
<p>UTF-8, however, obviates the need for any of these complicated
@@ -526,16 +518,16 @@ you don't have to use those user-unfriendly entities.</p>
<h3 id="whyutf8-user">User-friendly</h3>
<p>Websites encoded in Latin-1 (ISO-8859-1) which occasionally need
<p>Websites encoded in Latin-1 (ISO-8859-1) which ocassionally need
a special character outside of their scope often will use a character
entity reference to achieve the desired effect. For instance, &theta; can be
entity to achieve the desired effect. For instance, &theta; can be
written <code>&amp;theta;</code>, regardless of the character encoding's
support of Greek letters.</p>
<p>This works nicely for limited use of special characters, but
say you wanted this sentence of Chinese text: &#28608;&#20809;,
&#36889;&#20841;&#20491;&#23383;&#26159;&#29978;&#40636;&#24847;&#24605;.
The ampersand encoded version would look like this:</p>
The entity-ized version would look like this:</p>
<pre>&amp;#28608;&amp;#20809;, &amp;#36889;&amp;#20841;&amp;#20491;&amp;#23383;&amp;#26159;&amp;#29978;&amp;#40636;&amp;#24847;&amp;#24605;</pre>
@@ -553,7 +545,7 @@ an application that originally used ISO-8859-1 but switched to UTF-8
when it became far to cumbersome to support foreign languages. Bots
will now actually go through articles and convert character entities
to their corresponding real characters for the sake of user-friendliness
and searchability. See
and searcheability. See
<a href="http://meta.wikimedia.org/wiki/Help:Special_characters">Meta's
page on special characters</a> for more details.
</p></blockquote>
@@ -575,24 +567,21 @@ which may be used by POST, and is required when you want to upload
files.</p>
<p>The following is a summarization of notes from
<a href="http://web.archive.org/web/20060427015200/ppewww.ph.gla.ac.uk/~flavell/charset/form-i18n.html">
<a href="http://ppewww.physics.gla.ac.uk/~flavell/charset/form-i18n.html">
<code>FORM</code> submission and i18n</a>. That document contains lots
of useful information, but is written in a rambly manner, so
here I try to get right to the point. (Note: the original has
disappeared off the web, so I am linking to the Web Archive copy.)</p>
here I try to get right to the point.</p>
<h4 id="whyutf8-forms-urlencoded"><code>application/x-www-form-urlencoded</code></h4>
<p>This is the Content-Type that GET requests must use, and POST requests
use by default. It involves the ubiquitous percent encoding format that
use by default. It involves the ubiquituous percent encoding format that
looks something like: <code>%C3%86</code>. There is no official way of
determining the character encoding of such a request, since the percent
encoding operates on a byte level, so it is usually assumed that it
is the same as the encoding the page containing the form was submitted
in. (<a href="http://tools.ietf.org/html/rfc3986#section-2.5">RFC 3986</a>
recommends that textual identifiers be translated to UTF-8; however, browser
compliance is spotty.) You'll run into very few problems
if you only use characters in the character encoding you chose.</p>
in. You'll run into very few problems if you only use characters in
the character encoding you chose.</p>
<p>However, once you start adding characters outside of your encoding
(and this is a lot more common than you may think: take curly
@@ -603,7 +592,7 @@ browser you're using, they might:</p>
<ul>
<li>Replace the unsupported characters with useless question marks,</li>
<li>Attempt to fix the characters (example: smart quotes to regular quotes),</li>
<li>Replace the character with a character entity reference, or</li>
<li>Replace the character with a character entity, or</li>
<li>Send it anyway as a different character encoding mixed in
with the original encoding (usually Windows-1252 rather than
iso-8859-1 or UTF-8 interspersed in 8-bit)</li>
@@ -619,7 +608,7 @@ since UTF-8 supports every character.</p>
<h4 id="whyutf8-forms-multipart"><code>multipart/form-data</code></h4>
<p>Multipart form submission takes away a lot of the ambiguity
<p>Multipart form submission takes a way a lot of the ambiguity
that percent-encoding had: the server now can explicitly ask for
certain encodings, and the client can explicitly tell the server
during the form submission what encoding the fields are in.</p>
@@ -632,9 +621,9 @@ Each method has deficiencies, especially the former.</p>
<p>If you tell the browser to send the form in the same encoding as
the page, you still have the trouble of what to do with characters
that are outside of the character encoding's range. The behavior, once
again, varies: Firefox 2.0 converts them to character entity references
while Internet Explorer 7.0 mangles them beyond intelligibility. For
serious internationalization purposes, this is not an option.</p>
again, varies: Firefox 2.0 entity-izes them while Internet Explorer
7.0 mangles them beyond intelligibility. For serious internationalization purposes,
this is not an option.</p>
<p>The other possibility is to set Accept-Encoding to UTF-8, which
begs the question: Why aren't you using UTF-8 for everything then?
@@ -674,12 +663,12 @@ it up to the module iconv to do the dirty work.</p>
<p>This approach, however, is not perfect. iconv is blithely unaware
of HTML character entities. HTML Purifier, in order to
protect against sophisticated escaping schemes, normalizes all character
and numeric entity references before processing the text. This leads to
and numeric entities before processing the text. This leads to
one important ramification:</p>
<p><strong>Any character that is not supported by the target character
set, regardless of whether or not it is in the form of a character
entity reference or a raw character, will be silently ignored.</strong></p>
entity or a raw character, will be silently ignored.</strong></p>
<p>Example of this principle at work: say you have <code>&amp;theta;</code>
in your HTML, but the output is in Latin-1 (which, understandably,
@@ -688,7 +677,7 @@ set the encoding correctly using %Core.Encoding):</p>
<ul>
<li>The <code>Encoder</code> will transform the text from ISO 8859-1 to UTF-8
(note that theta is preserved here since it doesn't actually use
(note that theta is preserved since it doesn't actually use
any non-ASCII characters): <code>&amp;theta;</code></li>
<li>The <code>EntityParser</code> will transform all named and numeric
character entities to their corresponding raw UTF-8 equivalents:
@@ -711,7 +700,7 @@ Purifier has provided a slightly more palatable workaround using
<li>The <code>EntityParser</code> transforms entities: <code>&theta;</code></li>
<li>HTML Purifier processes the code: <code>&theta;</code></li>
<li>The <code>Encoder</code> replaces all non-ASCII characters
with numeric entity reference: <code>&amp;#952;</code></li>
with numeric entities: <code>&amp;#952;</code></li>
<li>For good measure, <code>Encoder</code> transforms encoding back to
original (which is strictly unnecessary for 99% of encodings
out there): <code>&amp;#952;</code> (remember, it's all ASCII!)</li>
@@ -721,19 +710,19 @@ Purifier has provided a slightly more palatable workaround using
the land of Unicode characters, and is totally unacceptable for Chinese
or Japanese texts. The even bigger kicker is that, supposing the
input encoding was actually ISO-8859-7, which <em>does</em> support
theta, the character would get converted into a character entity reference
anyway! (The Encoder does not discriminate).</p>
theta, the character would get entity-ized anyway! (The Encoder does
not discriminate).</p>
<p>The current functionality is about where HTML Purifier will be for
the rest of eternity. HTML Purifier could attempt to preserve the original
form of the character references so that they could be substituted back in, only the
form of the entities so that they could be substituted back in, only the
DOM extension kills them off irreversibly. HTML Purifier could also attempt
to be smart and only convert non-ASCII characters that weren't supported
by the target encoding, but that would require reimplementing iconv
with HTML awareness, something I will not do.</p>
<p>So there: either it's UTF-8 or crippled international support. Your pick! (and I'm
not being sarcastic here: some people could care less about other languages).</p>
not being sarcastic here: some people could care less about other languages)</p>
<h2 id="migrate">Migrate to UTF-8</h2>
@@ -770,7 +759,7 @@ the text when you try to convert it to UTF-8. You'll have to convert
it to a binary field, convert it to a Shift-JIS field (the real encoding),
and then finally to UTF-8. Many a website had pages irreversibly mangled
because they didn't realize that they'd been deluding themselves about
the character encoding all along; don't become the next victim.</p>
the character encoding all along, don't become the next victim.</p>
<p>For <a href="http://www.postgresql.org/docs/8.2/static/multibyte.html">PostgreSQL</a>, there appears to be no direct way to change the
encoding of a database (as of 8.2). You will have to dump the data, and then reimport
@@ -790,7 +779,7 @@ usually supported).</p>
<h4 id="migrate-db-binary">Binary</h4>
<p>Due to the aforementioned compatibility issues, a more interoperable
<p>Due to the abovementioned compatibility issues, a more interoperable
way of storing UTF-8 text is to stuff it in a binary datatype.
<code>CHAR</code> becomes <code>BINARY</code>, <code>VARCHAR</code> becomes
<code>VARBINARY</code> and <code>TEXT</code> becomes <code>BLOB</code>.
@@ -886,7 +875,7 @@ sure the page is saved WITHOUT the BOM.</p>
</blockquote>
<p>If you are reading in text files to insert into the middle of another
page, it is strongly advised (but not strictly necessary) that you replace out the UTF-8 byte
page, it is strongly advised (but not strictly necessary) that you replace out the UTF-8 byte
sequence for BOM <code>&quot;\xEF\xBB\xBF&quot;</code> before inserting it in,
via:</p>
@@ -917,8 +906,8 @@ anyway. So we'll deal with the other two edge cases.</p>
would like to read your website but get heaps of question marks or
other meaningless characters. Fixing this problem requires the
installation of a font or language pack which is often highly
dependent on what the language is. <a href="http://bn.wikipedia.org/wiki/%E0%A6%89%E0%A6%87%E0%A6%95%E0%A6%BF%E0%A6%AA%E0%A7%87%E0%A6%A1%E0%A6%BF%E0%A6%AF%E0%A6%BC%E0%A6%BE:Bangla_script_display_and_input_help">Here is an example</a>
of such a help file for the Bengali language; I am sure there are
dependent on what the language is. <a href="http://bn.wikipedia.org/wiki/%E0%A6%89%E0%A6%87%E0%A6%95%E0%A6%BF%E0%A6%AA%E0%A7%87%E0%A6%A1%E0%A6%BF%E0%A6%AF%E0%A6%BC%E0%A6%BE:Bangla_script_display_help">Here is an example</a>
of such a help file for the Bengali language, I am sure there are
others out there too. You just have to point users to the appropriate
help file.</p>
@@ -928,7 +917,7 @@ help file.</p>
characters embedded in what otherwise would be very bland ASCII are
letters of the
<a href="http://en.wikipedia.org/wiki/International_Phonetic_Alphabet">International
Phonetic Alphabet (IPA)</a>, use to designate pronunciations in a very standard
Phonetic Alphabet (IPA)</a>, use to designate pronounciations in a very standard
manner (you probably see them all the time in your dictionary). Your
average font probably won't have support for all of the IPA characters
like &#664; (bilabial click) or &#658; (voiced postalveolar fricative).
@@ -941,15 +930,15 @@ most widely used browser in the entire world? Microsoft IE 6
is not smart enough to borrow from other fonts when a character isn't
present, so more often than not you'll be slapped with a nice big &#65533;.
To get things to work, MSIE 6 needs a little nudge. You could configure it
to use a different font to render the text, but you can achieve the same
to use a different font to render the text, but you can acheive the same
effect by selectively changing the font for blocks of special characters
to known good Unicode fonts.</p>
<p>Fortunately, the folks over at Wikipedia have already done all the
<p>Fortunantely, the folks over at Wikipedia have already done all the
heavy lifting for you. Get the CSS from the horses mouth here:
<a href="http://en.wikipedia.org/wiki/MediaWiki:Common.css">Common.css</a>,
and search for &quot;.IPA&quot; There are also a smattering of
other classes you can use for other purposes, check out
other classes you can use for other purposes, check out
<a href="http://meta.wikimedia.org/wiki/Help:Special_characters#Displaying_Special_Characters">this page</a>
for more details. For you lazy ones, this should work:</p>
@@ -972,7 +961,7 @@ users.</p>
<h3 id="migrate-variablewidth">Dealing with variable width in functions</h3>
<p>When people claim that PHP6 will solve all our Unicode problems, they're
misinformed. It will not fix any of the aforementioned troubles. It will,
misinformed. It will not fix any of the abovementioned troubles. It will,
however, fix the problem we are about to discuss: processing UTF-8 text
in PHP.</p>
@@ -995,7 +984,7 @@ and yes, it is variable width. Other traits:</p>
in different ways. It is beyond the scope of this document to explain
what precisely these implications are. PHPWact provides
a very good <a href="http://www.phpwact.org/php/i18n/utf-8">reference document</a>
on what to expect from each function, although coverage is spotty in
on what to expect from each functions, although coverage is spotty in
some areas. Their more general notes on
<a href="http://www.phpwact.org/php/i18n/charsets">character sets</a>
are also worth looking at for information on UTF-8. Some rules of thumb
@@ -1009,7 +998,7 @@ when dealing with Unicode text:</p>
<li>Think twice before using functions that:<ul>
<li>...count characters (strlen will return bytes, not characters;
str_split and word_wrap may corrupt)</li>
<li>...convert characters to entity references (UTF-8 doesn't need entities)</li>
<li>...entity-ize things (UTF-8 doesn't need entities)</li>
<li>...do very complex string processing (*printf)</li>
</ul></li>
</ul>
@@ -1035,7 +1024,7 @@ directory.</p>
<p>Well, that's it. Hopefully this document has served as a very
practical springboard into knowledge of how UTF-8 works. You may have
decided that you don't want to migrate yet: that's fine, just know
what will happen to your output and what bug reports you may receive.</p>
what will happen to your output and what bug reports you may recieve.</p>
<p>Many other developers have already discussed the subject of Unicode,
UTF-8 and internationalization, and I would like to defer to them for
@@ -1055,6 +1044,3 @@ a more in-depth look into character sets and encodings.</p>
</body>
</html>
<!-- vim: et sw=4 sts=4
-->

View File

@@ -67,15 +67,17 @@ into your documents. YouTube's code goes like this:</p>
</ol>
<p>What point 2 means is that if we have code like <code>&lt;span
class=&quot;youtube-embed&quot;&gt;AyPzM5WK8ys&lt;/span&gt;</code> your
class=&quot;embed-youtube&quot;&gt;AyPzM5WK8ys&lt;/span&gt;</code> your
application can reconstruct the full object from this small snippet that
passes through HTML Purifier <em>unharmed</em>.
<a href="http://repo.or.cz/w/htmlpurifier.git?a=blob;hb=HEAD;f=library/HTMLPurifier/Filter/YouTube.php">Show me the code!</a></p>
<a href="http://htmlpurifier.org/svnroot/htmlpurifier/trunk/library/HTMLPurifier/Filter/YouTube.php">Show me the code!</a></p>
<p>And the corresponding usage:</p>
<pre>&lt;?php
$config-&gt;set('Filter.YouTube', true);
// assuming $purifier is an instance of HTMLPurifier
require_once 'HTMLPurifier/Filter/YouTube.php';
$purifier-&gt;addFilter(new HTMLPurifier_Filter_YouTube());
?&gt;</pre>
<p>There is a bit going in the two code snippets, so let's explain.</p>
@@ -148,6 +150,3 @@ with the core!</p>
</body>
</html>
<!-- vim: et sw=4 sts=4
-->

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@@ -8,8 +8,8 @@ require_once '../../library/HTMLPurifier.auto.php';
$config = HTMLPurifier_Config::createDefault();
// configuration goes here:
$config->set('Core.Encoding', 'UTF-8'); // replace with your encoding
$config->set('HTML.Doctype', 'XHTML 1.0 Transitional'); // replace with your doctype
$config->set('Core', 'Encoding', 'UTF-8'); // replace with your encoding
$config->set('HTML', 'Doctype', 'XHTML 1.0 Transitional'); // replace with your doctype
$purifier = new HTMLPurifier($config);
@@ -20,4 +20,3 @@ $pure_html = $purifier->purify($html);
echo '<pre>' . htmlspecialchars($pure_html) . '</pre>';
// vim: et sw=4 sts=4

View File

@@ -4,6 +4,3 @@ function init() {
element.innerHTML = '&#8220;'+element.innerHTML+'&#8221;';
}
</script>
<!-- vim: et sw=4 sts=4
-->

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@@ -60,16 +60,10 @@ conventions.</p>
<dt><a href="dev-optimization.html">Optimization</a></dt>
<dd>Discusses possible methods of optimizing HTML Purifier.</dd>
<dt><a href="dev-flush.html">Flushing the Purifier</a></dt>
<dd>Discusses when to flush HTML Purifier's various caches.</dd>
<dt><a href="dev-advanced-api.html">Advanced API</a></dt>
<dd>Specification for HTML Purifier's advanced API for defining
<dd>Functional specification for HTML Purifier's advanced API for defining
custom filtering behavior.</dd>
<dt><a href="dev-config-schema.html">Config Schema</a></dt>
<dd>Describes config schema framework in HTML Purifier.</dd>
</dl>
<h2>Proposals</h2>
@@ -98,8 +92,8 @@ the code. They may be upgraded to HTML files or stay as TXT scratchpads.</p>
<table class="table">
<thead><tr>
<th style="width:10%">Type</th>
<th style="width:20%">Name</th>
<th width="10%">Type</th>
<th width="20%">Name</th>
<th>Description</th>
</tr></thead>
@@ -119,13 +113,7 @@ the code. They may be upgraded to HTML files or stay as TXT scratchpads.</p>
<tr>
<td>Development</td>
<td><a href="dev-config-bcbreaks.txt">Config BC Breaks</a></td>
<td>Backwards-incompatible changes in HTML Purifier 4.0.0</td>
</tr>
<tr>
<td>Development</td>
<td><a href="dev-code-quality.txt">Code Quality Issues</a></td>
<td><a href="enduser-code-quality.txt">Code Quality Issues</a></td>
<td>Enumerates code quality issues and places that need to be refactored.</td>
</tr>
@@ -147,12 +135,6 @@ the code. They may be upgraded to HTML files or stay as TXT scratchpads.</p>
<td>Assorted configuration options that could be implemented.</td>
</tr>
<tr>
<td>Proposal</td>
<td><a href="proposal-css-extraction.txt">CSS extraction</a></td>
<td>Taking the inline CSS out of documents and into <code>style</code>.</td>
</tr>
<tr>
<td>Reference</td>
<td><a href="ref-content-models.txt">Handling Content Model Changes</a></td>
@@ -181,8 +163,6 @@ the code. They may be upgraded to HTML files or stay as TXT scratchpads.</p>
</table>
<div id="version">$Id$</div>
</body>
</html>
<!-- vim: et sw=4 sts=4
-->

View File

@@ -42,8 +42,7 @@ into the mix.</li>
something like that?</li>
</ol>
<div id="version">$Id$</div>
</body>
</html>
<!-- vim: et sw=4 sts=4
-->

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@@ -19,5 +19,3 @@ Definition objects are complex datatypes influenced by their respective
directive namespaces (HTMLDefinition with HTML and CSSDefinition with CSS).
If any of these directives is updated, HTML Purifier forces the definition
to be regenerated.
vim: et sw=4 sts=4

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@@ -1,34 +0,0 @@
Extracting inline CSS from HTML Purifier
voodoofied: Assigning semantics to elements
Sander Tekelenburg brought to my attention the poor programming style of
inline CSS in HTML documents. In an ideal world, we wouldn't be using inline
CSS at all: everything would be assigned using semantic class attributes
from an external stylesheet.
With ExtractStyleBlocks and CSSTidy, this is now possible (when allowed, users
can specify a style element which gets extracted from the user-submitted HTML, which
the application can place in the head of the HTML document). But there still
is the issue of inline CSS that refuses to go away.
The basic idea behind this feature is assign every element a unique identifier,
and then move all of the CSS data to a style-sheet. This HTML:
<div style="text-align:center">Big <span style="color:red;">things</span>!</div>
into
<div id="hp-12345">Big <span id="hp-12346">things</span>!</div>
and a stylesheet that is:
#hp-12345 {text-align:center;}
#hp-12346 {color:red;}
Beyond that, HTML Purifier can magically merge common CSS values together,
and a whole manner of other heuristic things. HTML Purifier should also
make it easy for an admin to re-style the HTML semantically. Speed is not
an issue. Also, better WYSIWYG editors are needed.
vim: et sw=4 sts=4

View File

@@ -1,211 +0,0 @@
Considerations for ErrorCollection
Presently, HTML Purifier takes a code-execution centric approach to handling
errors. Errors are organized and grouped according to which segment of the
code triggers them, not necessarily the portion of the input document that
triggered the error. This means that errors are pseudo-sorted by category,
rather than location in the document.
One easy way to "fix" this problem would be to re-sort according to line number.
However, the "category" style information we derive from naively following
program execution is still useful. After all, each of the strategies which
can report errors still process the document mostly linearly. Furthermore,
not only do they process linearly, but the way they pass off operations to
sub-systems mirrors that of the document. For example, AttrValidator will
linearly proceed through elements, and on each element will use AttrDef to
validate those contents. From there, the attribute might have more
sub-components, which have execution passed off accordingly.
In fact, each strategy handles a very specific class of "error."
RemoveForeignElements - element tokens
MakeWellFormed - element token ordering
FixNesting - element token ordering
ValidateAttributes - attributes of elements
The crucial point is that while we care about the hierarchy governing these
different errors, we *don't* care about any other information about what actually
happens to the elements. This brings up another point: if HTML Purifier fixes
something, this is not really a notice/warning/error; it's really a suggestion
of a way to fix the aforementioned defects.
In short, the refactoring to take this into account kinda sucks.
Errors should not be recorded in order that they are reported. Instead, they
should be bound to the line (and preferably element) in which they were found.
This means we need some way to uniquely identify every element in the document,
which doesn't presently exist. An easy way of adding this would be to track
line columns. An important ramification of this is that we *must* use the
DirectLex implementation.
1. Implement column numbers for DirectLex [DONE!]
2. Disable error collection when not using DirectLex [DONE!]
Next, we need to re-orient all of the error declarations to place CurrentToken
at utmost important. Since this is passed via Context, it's not always clear
if that's available. ErrorCollector should complain HARD if it isn't available.
There are some locations when we don't have a token available. These include:
* Lexing - this can actually have a row and column, but NOT correspond to
a token
* End of document errors - bump this to the end
Actually, we *don't* have to complain if CurrentToken isn't available; we just
set it as a document-wide error. And actually, nothing needs to be done here.
Something interesting to consider is whether or not we care about the locations
of attributes and CSS properties, i.e. the sub-objects that compose these things.
In terms of consistency, at the very least attributes should have column/line
numbers attached to them. However, this may be overkill, as attributes are
uniquely identifiable. You could go even further, with CSS, but they are also
uniquely identifiable.
Bottom-line is, however, this information must be available, in form of the
CurrentAttribute and CurrentCssProperty (theoretical) context variables, and
it must be used to organize the errors that the sub-processes may throw.
There is also a hierarchy of sorts that may make merging this into one context
variable more sense, if it hadn't been for HTML's reasonably rigid structure.
A CSS property will never contain an HTML attribute. So we won't ever get
recursive relations, and having multiple depths won't ever make sense. Leave
this be.
We already have this information, and consequently, using start and end is
*unnecessary*, so long as the context variables are set appropriately. We don't
care if an error was thrown by an attribute transform or an attribute definition;
to the end user these are the same (for a developer, they are different, but
they're better off with a stack trace (which we should add support for) in such
cases).
3. Remove start()/end() code. Don't get rid of recursion, though [DONE]
4. Setup ErrorCollector to use context information to setup hierarchies.
This may require a different internal format. Use objects if it gets
complex. [DONE]
ASIDE
More on this topic: since we are now binding errors to lines
and columns, a particular error can have three relationships to that
specific location:
1. The token at that location directly
RemoveForeignElements
AttrValidator (transforms)
MakeWellFormed
2. A "component" of that token (i.e. attribute)
AttrValidator (removals)
3. A modification to that node (i.e. contents from start to end
token) as a whole
FixNesting
This needs to be marked accordingly. In the presentation, it might
make sense keep (3) separate, have (2) a sublist of (1). (1) can
be a closing tag, in which case (3) makes no sense at all, OR it
should be related with its opening tag (this may not necessarily
be possible before MakeWellFormed is run).
So, the line and column counts as our identifier, so:
$errors[$line][$col] = ...
Then, we need to identify case 1, 2 or 3. They are identified as
such:
1. Need some sort of semaphore in RemoveForeignElements, etc.
2. If CurrentAttr/CurrentCssProperty is non-null
3. Default (FixNesting, MakeWellFormed)
One consideration about (1) is that it usually is actually a
(3) modification, but we have no way of knowing about that because
of various optimizations. However, they can probably be treated
the same. The other difficulty is that (3) is never a line and
column; rather, it is a range (i.e. a duple) and telling the user
the very start of the range may confuse them. For example,
<b>Foo<div>bar</div></b>
^ ^
The node being operated on is <b>, so the error would be assigned
to the first caret, with a "node reorganized" error. Then, the
ChildDef would have submitted its own suggestions and errors with
regard to what's going in the internals. So I suppose this is
ok. :-)
Now, the structure of the earlier mentioned ... would be something
like this:
object {
type = (token|attr|property),
value, // appropriate for type
errors => array(),
sub-errors = [recursive],
}
This helps us keep things agnostic. It is also sufficiently complex
enough to warrant an object.
So, more wanking about the object format is in order. The way HTML Purifier is
currently setup, the only possible hierarchy is:
token -> attr -> css property
These relations do not exist all of the time; a comment or end token would not
ever have any attributes, and non-style attributes would never have CSS properties
associated with them.
I believe that it is worth supporting multiple paths. At some point, we might
have a hierarchy like:
* -> syntax
-> token -> attr -> css property
-> url
-> css stylesheet <style>
et cetera. Now, one of the practical implications of this is that every "node"
on our tree is well-defined, so in theory it should be possible to either 1.
create a separate class for each error struct, or 2. embed this information
directly into HTML Purifier's token stream. Embedding the information in the
token stream is not a terribly good idea, since tokens can be removed, etc.
So that leaves us with 1... and if we use a generic interface we can cut down
on a lot of code we might need. So let's leave it like this.
~~~~
Then we setup suggestions.
5. Setup a separate error class which tells the user any modifications
HTML Purifier made.
Some information about this:
Our current paradigm is to tell the user what HTML Purifier did to the HTML.
This is the most natural mode of operation, since that's what HTML Purifier
is all about; it was not meant to be a validator.
However, most other people have experience dealing with a validator. In cases
where HTML Purifier unambiguously does the right thing, simply giving the user
the correct version isn't a bad idea, but problems arise when:
- The user has such bad HTML we do something odd, when we should have just
flagged the HTML as an error. Such examples are when we do things like
remove text from directly inside a <table> tag. It was probably meant to
be in a <td> tag or be outside the table, but we're not smart enough to
realize this so we just remove it. In such a case, we should tell the user
that there was foreign data in the table, but then we shouldn't "demand"
the user remove the data; it's more of a "here's a possible way of
rectifying the problem"
- Giving line context for input is hard enough, but feasible; giving output
line context will be extremely difficult due to shifting lines; we'd probably
have to track what the tokens are and then find the appropriate out context
and it's not guaranteed to work etc etc etc.
````````````
Don't forget to spruce up output.
6. Output needs to automatically give line and column numbers, basically
"at line" on steroids. Look at W3C's output; it's ok. [PARTIALLY DONE]
- We need a standard CSS to apply (check demo.css for some starting
styling; some buttons would also be hip)
vim: et sw=4 sts=4

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@@ -133,5 +133,3 @@ Dramatic - border, list-style-position (list-style), margin, padding,
Dramatic elements substantially change the look of text in ways that should
probably have been reserved to other areas.
vim: et sw=4 sts=4

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@@ -60,5 +60,3 @@ Neat functionality:
- Roman numeral formatting
Items marked with a + likely need to be addressed by HTML Purifier
vim: et sw=4 sts=4

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@@ -16,7 +16,7 @@ implemented, give us a ring, and we'll move it up the priority chain.
%Attr.ClassBlacklist. When it's Whitelist, only allow those in
%Attr.ClassWhitelist.
%Attr.MaxWidth,
%Attr.MaxWidth,
%Attr.MaxHeight - caps for width and height related checks.
(the hack in Pixels for an image crashing attack could be replaced by this)
@@ -41,4 +41,3 @@ implemented, give us a ring, and we'll move it up the priority chain.
absolute DNS. While this is actually the preferred method according to
the RFC, most people opt to use a relative domain name relative to . (root).
vim: et sw=4 sts=4

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@@ -1,218 +0,0 @@
THE UNIVERSAL DESIGN PATTERN: PROPERTIES
Steve Yegge
Implementation:
get(name)
put(name, value)
has(name)
remove(name)
iteration, with filtering [this will be our namespaces]
parent
Representations:
- Keys are strings
- It's nice to not need to quote keys (if we formulate our own language,
consider this)
- Property not present representation (key missing)
- Frequent removal/re-add may have null help. If null is valid, use
another value. (PHP semantics are weird here)
Data structures:
- LinkedHashMap is wonderful (O(1) access and maintains order)
- Using a special property that points to the parent is usual
- Multiple inheritance possible, need rules for which to lookup first
- Iterative inheritance is best
- Consider performance!
Deletion
- Tricky problem with inheritance
- Distinguish between "not found" and "look in my parent for the property"
[Maybe HTML Purifier won't allow deletion]
Read/write asymmetry (it's correct!)
Read-only plists
- Allow ability to freeze [this is what we have already]
- Don't overuse it
Performance:
- Intern strings (PHP does this already)
- Don't be case-insensitive
- If all properties in a plist are known a-priori, you can use a "perfect"
hash function. Often overkill.
- Copy-on-read caching "plundering" reduces lookup, but uses memory and can
grow stale. Use as last resort.
- Refactoring to fields. Watch for API compatibility, system complexity,
and lack of flexibility.
- Refrigerator: external data-structure to hold plists
Transient properties:
[Don't need to worry about this]
- Use a separate plist for transient properties
- Non-numeric override; numeric should ADD
- Deletion: removeTransientProperty() and transientlyRemoveProperty()
Persistence:
- XML/JSON are good
- Text-based is good for readability, maintainability and bootstrapping
- Compressed binary format for network transport [not necessary]
- RDBMS or XML database
Querying: [not relevant]
- XML database is nice for XPath/XQuery
- jQuery for JSON
- Just load it all into a program
Backfills/Data integrity:
- Use usual methods
- Lazy backfill is a nice hack
Type systems:
- Flags: ReadOnly, Permanent, DontEnum
- Typed properties isn't that useful [It's also Not-PHP]
- Seperate meta-list of directive properties IS useful
- Duck typing is useful for systems designed fully around properties pattern
Trade-off:
+ Flexibility
+ Extensibility
+ Unit-testing/prototype-speed
- Performance
- Data integrity
- Navagability/Query-ability
- Reversability (hard to go back)
HTML Purifier
We are not happy with our current system of defining configuration directives,
because it has become clear that things will get a lot nicer if we allow
multiple namespaces, and there are some features that naturally lend themselves
to inheritance, which we do not really support well.
One of the considered implementation changes would be to go from a structure
like:
array(
'Namespace' => array(
'Directive' => 'val1',
'Directive2' => 'val2',
)
)
to:
array(
'Namespace.Directive' => 'val1',
'Namespace.Directive2' => 'val2',
)
The below implementation takes more memory, however, and it makes it a bit
complicated to grab all values from a namespace.
The alternate implementation choice is to allow nested plists. This keeps
iteration easy, but is problematic for inheritance (it would be difficult
to distinguish a plist from an array) and retrieval (when specifying multiple
namespaces we would need some multiple de-referencing).
----
We can bite the performance hit, and just do iteration with filter
(the strncmp call should be relatively cheap). Then, users should be able
to optimize doing something like:
$config = HTMLPurifier_Config::createDefault();
if (!file_exists('config.php')) {
// set up $config
$config->save('config.php');
} else {
$config->load('config.php');
}
Or maybe memcache, or something. This means that "// set up $config" must
not have any dynamic parts, or the user has to invalidate the cache when
they do update it. We have to think about this a little more carefully; the
file call might be more expensive.
----
This might get expensive, however, when we actually care about iterating
over the configuration and want the actual values. So what about nesting the
lists?
"ns.sub.directive" => values['ns']['sub']['directive']
We can distinguish between plists and arrays by using ArrayObjects for the
plists, and regular arrays for the arrays? Alternatively, use ArrayObjects
for the arrays, and regular arrays for the plists.
----
Implementation demands, and what has caused them:
1. DefinitionCache, the HTML, CSS and URI namespaces have caches attached to them
Results:
- getBatchSerial()
- getBatch() : in general, the ability to traverse just a namespace
2. AutoFormat/Filter, this is a plugin architecture, directives not hard-coded
- getBatch()
3. Configuration form
- Namespaces used to organize directives
Other than that, we have a pure plist. PERHAPS we should maintain separate things
for these different demands.
Issue 2: Directives for configuring the plugins are regular plists, but
when enabling them, while it's "plist-ish", what you're really doing is adding
them to an array of "autoformatters"/"filters" to enable. We can setup
magic BC as well as in the new interface, but there should also be an
add('AutoFormat', 'AutoParagraph'); which does the right thing.
One thing to consider is whether or not inheritance rules will apply to these.
I'd say yes. That means that they're still plisty, in fact, the underlying
implementation will probably be a plist. However, they will get their OWN
plists, and will NOT support nesting.
Issue 1: Our current implementation is generally not efficient; md5(serialize($foo))
is pretty expensive. So, I don't think there will be any problems if it
gets "less" efficient, as long as we give users a properly fast alternative;
DefinitionRev gives us a way to do this, by simply telling the user they must
update it whenever they update Configuration directives as well. (There are
obvious BC concerns here).
In such a case, we simply iterate over our plist (performing full retrievals
for each value), grab the entries we care about, and then serialize and hash.
It's going to be slow either way, due to the ability of plists to inherit.
If we ksort(), we don't have to traverse the entire array, however, the
cost of a ksort() call may not be worth it.
At this point, last time, I started worrying about the performance implications
of allowing inheritance, and wondering whether or not I wanted to squash
the plist. At first blush, our code might be under the assumption that
accessing properties is cheap; but actually we prefer to copy out the value
into a member variable if it's going to be used many times. With this is mind
I don't think CPU consumption from a few nested function calls is going to
be a problem. We *are* going to enforce a function only interface.
The next issue at hand is how we're going to manage the "special" plists,
which should still be able to be inherited. Basically, it means that multiple
plists would be attached to the configuration object, which is not the
best for memory performance. The alternative is to keep them all in one
big plist, and then eat the one-time cost of traversing the entire plist
to grab the appropriate values.
I think at this point we can write the generic interface, and then set up separate
plists if that ends up being necessary for performance (it probably won't.) Now
lets code our generic plist implementation.
----
Iterating over the plist presents some problems. The way we've chosen to solve
this is to squash all of the parents.
----
But I don't need iteration.
vim: et sw=4 sts=4

View File

@@ -46,5 +46,3 @@ is eliminated completely, in the latter case, the text of the node
would is preserved (as the parent node does allow PCDATA). Custom
content model implementations probably are not the best way of handling
these cases, instead, node bubbling should be implemented instead.
vim: et sw=4 sts=4

View File

@@ -1,30 +0,0 @@
CSS Length Reference
To bound, or not to bound, that is the question
It's quite a reasonable request, really, and it's already been implemented
for HTML. That is, length bounding. It makes little sense to let users
define text blocks that have a font-size of 63,360 inches (that's a mile,
by the way) or a width of forty-fold the parent container.
But it's a little more complicated then that. There are multiple units
one can use, and we have to a little unit conversion to get things working.
Here's what we have:
Absolute:
1 in ~= 2.54 cm
1 cm = 10 mm
1 pt = 1/72 in
1 pc = 12 pt
Relative:
1 em ~= 10.0667 px
1 ex ~= 0.5 em, though Mozilla Firefox says 1 ex = 6px
1 px ~= 1 pt
Watch out: font-sizes can also be nested to get successively larger
(although I do not relish having to keep track of context font-sizes,
this may be necessary, especially for some of the more advanced features
for preventing things like white on white).
vim: et sw=4 sts=4

View File

@@ -40,8 +40,6 @@ the development of this library in these forum threads:</p>
<p>...as well as any I may have forgotten.</p>
<div id="version">$Id$</div>
</body>
</html>
<!-- vim: et sw=4 sts=4
-->

View File

@@ -1,8 +1,8 @@
The Modularization of HTMLDefinition in HTML Purifier
WARNING: This document was drafted before the implementation of this
system, and some implementation details may have evolved over time.
Todo for XHTML 1.1 support <http://www.w3.org/TR/xhtml11/changes.html>
1. Support Ruby <http://www.w3.org/TR/2001/REC-ruby-20010531/>
HTML Purifier uses the modularization of XHTML
<http://www.w3.org/TR/xhtml-modularization/> to organize the internals
@@ -121,7 +121,7 @@ a proprietary system called ChildDef for performance and flexibility
reasons, but this does not line up very well with W3C's notion of
regexps for defining the allowed children of an element.
HTMLPurifier->elements[$element]->content_model and
HTMLPurifier->elements[$element]->content_model and
HTMLPurifier->elements[$element]->content_model_type store information
about the final ChildDef that will be stored in
HTMLPurifier->elements[$element]->child (we use a different variable
@@ -162,5 +162,3 @@ array of content set names to content set contents. If the content set
already exists, your values are appended on to it (great for, say,
registering the font tag as an inline element), otherwise it is
created. They are substituted into content_model.
vim: et sw=4 sts=4

View File

@@ -22,5 +22,3 @@ HTML Purifier context.
These should be put into their own Tidy module, not loaded by default(?). These
all qualify as "lenient" transforms.
vim: et sw=4 sts=4

View File

@@ -18,9 +18,7 @@ committing ourselves till the spec stabilizes, though.
More immediately speaking though, however, is the well-defined parsing
behavior that HTML 5 adds. While I have little interest in writing
another DirectLex parser, other parsers like ph5p
another DirectLex parser, other parsers like ph5p
<http://jero.net/lab/ph5p/> can be adapted to DOMLex to support much more
flexible HTML parsing (a cool feature I've seen is how they resolve
<b>bold<i>both</b>italic</i>).
vim: et sw=4 sts=4

View File

@@ -1,10 +1,8 @@
Licensing of Specimens
Some files in this directory have different licenses:
windows-live-mail-desktop-beta.html - donated by laacz, public domain
img.png - LGPL, from <http://commons.wikimedia.org/wiki/Image:Pastille_chrome.png>
All other files are by me, and are licensed under LGPL.
vim: et sw=4 sts=4
Licensing of Specimens
Some files in this directory have different licenses:
windows-live-mail-desktop-beta.html - donated by laacz, public domain
img.png - LGPL, from <http://commons.wikimedia.org/wiki/Image:Pastille_chrome.png>
All other files are by me, and are licensed under LGPL.

View File

@@ -162,4 +162,4 @@ div.segment {width:250px; float:left; margin-top:1em;}
</div>
</body>
</html>
</html>

View File

@@ -1,129 +0,0 @@
<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii">
<meta name=Generator content="Microsoft Word 12 (filtered medium)">
<!--[if !mso]>
<style>
v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
..shape {behavior:url(#default#VML);}
</style>
<![endif]-->
<style>
<!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Verdana;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Verdana","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0cm;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Verdana","sans-serif";
color:windowtext;}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
..MsoChpDefault
{mso-style-type:export-only;}
@page Section1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 70.85pt 70.85pt;}
div.Section1
{page:Section1;}
-->
</style>
<!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="2050" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang=NL link=blue vlink=purple>
<div class=Section1>
<p class=MsoNormal><img width=1277 height=994 id="Picture_x0020_1"
src="cid:image001.png@01C8CBDF.5D1BAEE0"><o:p></o:p></p>
<p class=MsoNormal><o:p>&nbsp;</o:p></p>
<p class=MsoNormal><b>Name<o:p></o:p></b></p>
<p class=MsoNormal>E-mail : <a href="mailto:mail@example.com"><span
style='color:windowtext'>mail@example.com</span></a><o:p></o:p></p>
<p class=MsoNormal><o:p>&nbsp;</o:p></p>
<p class=MsoNormal><b>Company<o:p></o:p></b></p>
<p class=MsoNormal>Address 1<o:p></o:p></p>
<p class=MsoNormal>Address 2<o:p></o:p></p>
<p class=MsoNormal><o:p>&nbsp;</o:p></p>
<p class=MsoNormal>Telefoon&nbsp; : +xx xx xxx xxx xx <span style='color:black'><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:black'>Fax&nbsp; : +xx xx xxx xx xx<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:black'>Internet : </span><span
style='color:black'><a href="http://www.example.com/"><span lang=EN-US
style='color:black'>http://www.example.com</span></a></span><span
lang=EN-US style='color:black'><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:black'>Kamer van koophandel
xxxxxxxxx<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:black'><o:p>&nbsp;</o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:7.5pt;color:black'>Op deze
e-mail is een disclaimer van toepassing, ga naar </span><span lang=EN-US
style='font-size:7.5pt'><a
href="http://www.example.com/disclaimer"><span
style='color:black'>www.example.com/disclaimer</span></a><br>
<span style='color:black'>A disclaimer is applicable to this email, please
refer to </span><a href="http://www.example.com/disclaimer"><span
style='color:black'>www.example.com/disclaimer</span></a><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p>&nbsp;</o:p></span></p>
</div>
</body>
</html>

View File

@@ -4,71 +4,71 @@
<STYLE></STYLE>
<META content="MSHTML 6.00.6000.16414" name=GENERATOR></HEAD>
<BODY id=MailContainerBody
style="PADDING-RIGHT: 10px; PADDING-LEFT: 10px; FONT-SIZE: 10pt; COLOR: #000000; PADDING-TOP: 15px; FONT-FAMILY: Arial"
bgColor=#ff6600 leftMargin=0 background="" topMargin=0
<BODY id=MailContainerBody
style="PADDING-RIGHT: 10px; PADDING-LEFT: 10px; FONT-SIZE: 10pt; COLOR: #000000; PADDING-TOP: 15px; FONT-FAMILY: Arial"
bgColor=#ff6600 leftMargin=0 background="" topMargin=0
name="Compose message area" acc_role="text" CanvasTabStop="false">
<DIV
style="BORDER-TOP: #dddddd 1px solid; FONT-SIZE: 10pt; WIDTH: 100%; MARGIN-RIGHT: 10px; PADDING-TOP: 5px; BORDER-BOTTOM: #dddddd 1px solid; FONT-FAMILY: Verdana; HEIGHT: 25px; BACKGROUND-COLOR: #ffffff"><NOBR><SPAN
title="View a slideshow of the pictures in this e-mail message."
style="PADDING-RIGHT: 20px"><A style="COLOR: #0088e4"
href="http://g.msn.com/5meen_us/171?path=/photomail/{6fc0065f-ffdd-4ca6-9a4c-cc5a93dc122f}&amp;image=47D7B182CFEFB10!127&amp;imagehi=47D7B182CFEFB10!125&amp;CID=323550092004883216">Play
slideshow </A></SPAN><SPAN style="COLOR: #909090"><SPAN>|</SPAN><SPAN
style="PADDING-LEFT: 20px"> Download the highest quality version of a picture by
<DIV
style="BORDER-TOP: #dddddd 1px solid; FONT-SIZE: 10pt; WIDTH: 100%; MARGIN-RIGHT: 10px; PADDING-TOP: 5px; BORDER-BOTTOM: #dddddd 1px solid; FONT-FAMILY: Verdana; HEIGHT: 25px; BACKGROUND-COLOR: #ffffff"><NOBR><SPAN
title="View a slideshow of the pictures in this e-mail message."
style="PADDING-RIGHT: 20px"><A style="COLOR: #0088e4"
href="http://g.msn.com/5meen_us/171?path=/photomail/{6fc0065f-ffdd-4ca6-9a4c-cc5a93dc122f}&amp;image=47D7B182CFEFB10!127&amp;imagehi=47D7B182CFEFB10!125&amp;CID=323550092004883216">Play
slideshow </A></SPAN><SPAN style="COLOR: #909090"><SPAN>|</SPAN><SPAN
style="PADDING-LEFT: 20px"> Download the highest quality version of a picture by
clicking the + above it </SPAN></SPAN></NOBR></DIV>
<DIV
<DIV
style="PADDING-RIGHT: 5px; PADDING-LEFT: 7px; PADDING-BOTTOM: 2px; WIDTH: 100%; PADDING-TOP: 2px">
<OL>
<LI><IMG title="Angry smile emoticon"
style="FLOAT: none; MARGIN: 0px; POSITION: static" tabIndex=-1
alt="Angry smile emoticon" src="cid:49F0C856199E4D688D2D740680733D74@wc"
MSNNonUserImageOrEmoticon="true">Un ka <FONT style="BACKGROUND-COLOR: #800000"
color=#cc99ff><STRONG>Tev</STRONG></FONT> iet, un ko tu dari?
<LI><IMG title="Angry smile emoticon"
style="FLOAT: none; MARGIN: 0px; POSITION: static" tabIndex=-1
alt="Angry smile emoticon" src="cid:49F0C856199E4D688D2D740680733D74@wc"
MSNNonUserImageOrEmoticon="true">Un ka <FONT style="BACKGROUND-COLOR: #800000"
color=#cc99ff><STRONG>Tev</STRONG></FONT> iet, un ko tu dari?
<LI>Aha!</LI></OL>
<UL>
<LI>Buletets
<LI>Buletets
<LI>
<DIV align=justify><A title=http://laacz.lv/blog/
href="http://laacz.lv/blog/">http://laacz.lv/blog/</A> un <A
<DIV align=justify><A title=http://laacz.lv/blog/
href="http://laacz.lv/blog/">http://laacz.lv/blog/</A> un <A
title=http://google.com/ href="http://google.com/">gugle</A></DIV>
<LI>Sarakstucitis</LI></UL></DIV><SPAN><SPAN xmlns:canvas="canvas-namespace-id"
layoutEmptyTextWellFont="Tahoma"><SPAN
style="MARGIN-BOTTOM: 15px; OVERFLOW: visible; HEIGHT: 16px"></SPAN><SPAN
<LI>Sarakstucitis</LI></UL></DIV><SPAN><SPAN xmlns:canvas="canvas-namespace-id"
layoutEmptyTextWellFont="Tahoma"><SPAN
style="MARGIN-BOTTOM: 15px; OVERFLOW: visible; HEIGHT: 16px"></SPAN><SPAN
style="MARGIN-BOTTOM: 25px; VERTICAL-ALIGN: top; OVERFLOW: visible; MARGIN-RIGHT: 25px; HEIGHT: 234px">
<TABLE style="DISPLAY: inline">
<TBODY>
<TR>
<TD>
<DIV
style="FONT-WEIGHT: bold; FONT-SIZE: 12pt; FONT-FAMILY: arial; TEXT-ALIGN: center"><A
id=HiresARef
title="Click here to view or download a high resolution version of this picture"
style="COLOR: #0088e4; TEXT-DECORATION: none"
<DIV
style="FONT-WEIGHT: bold; FONT-SIZE: 12pt; FONT-FAMILY: arial; TEXT-ALIGN: center"><A
id=HiresARef
title="Click here to view or download a high resolution version of this picture"
style="COLOR: #0088e4; TEXT-DECORATION: none"
href="http://byfiles.storage.msn.com/x1pMvt0I80jTgT6DuaCpEMbprX3nk3jNv_vjigxV_EYVSMyM_PKgEvDEUtuNhQC-F-23mTTcKyqx6eGaeK2e_wMJ0ikwpDdFntk4SY7pfJUv2g2Ck6R2S2vAA?download">+</A></DIV>
<DIV
title="Click here to view the full image using the online photo viewer."
style="DISPLAY: inline; OVERFLOW: hidden; WIDTH: 140px; HEIGHT: 140px"><A
href="http://g.msn.com/5meen_us/171?path=/photomail/{6fc0065f-ffdd-4ca6-9a4c-cc5a93dc122f}&amp;image=47D7B182CFEFB10!127&amp;imagehi=47D7B182CFEFB10!125&amp;CID=323550092004883216"
border="0"><IMG
style="MARGIN-TOP: 15px; DISPLAY: inline-block; MARGIN-LEFT: 0px"
height=109 src="cid:006A71303B80404E9FB6184E55D6A446@wc" width=140
<DIV
title="Click here to view the full image using the online photo viewer."
style="DISPLAY: inline; OVERFLOW: hidden; WIDTH: 140px; HEIGHT: 140px"><A
href="http://g.msn.com/5meen_us/171?path=/photomail/{6fc0065f-ffdd-4ca6-9a4c-cc5a93dc122f}&amp;image=47D7B182CFEFB10!127&amp;imagehi=47D7B182CFEFB10!125&amp;CID=323550092004883216"
border="0"><IMG
style="MARGIN-TOP: 15px; DISPLAY: inline-block; MARGIN-LEFT: 0px"
height=109 src="cid:006A71303B80404E9FB6184E55D6A446@wc" width=140
border=0></A></DIV></TD></TR>
<TR>
<TD>
<DIV
style="FONT-SIZE: 10pt; WIDTH: 140px; FONT-FAMILY: verdana; TEXT-ALIGN: center"><EM><STRONG>This
<U>is </U></STRONG><U>tit</U>le</EM> fo<STRONG>r <FONT
face="Arial Black">t<FONT color=#800000 size=7>h<U>i</U></FONT>s
<DIV
style="FONT-SIZE: 10pt; WIDTH: 140px; FONT-FAMILY: verdana; TEXT-ALIGN: center"><EM><STRONG>This
<U>is </U></STRONG><U>tit</U>le</EM> fo<STRONG>r <FONT
face="Arial Black">t<FONT color=#800000 size=7>h<U>i</U></FONT>s
</FONT>picture</STRONG></DIV></TD></TR></TBODY></TABLE></SPAN></SPAN></SPAN>
<DIV
<DIV
style="PADDING-RIGHT: 5px; PADDING-LEFT: 7px; PADDING-BOTTOM: 2px; WIDTH: 100%; PADDING-TOP: 2px; HEIGHT: 50px">
<DIV>&nbsp;</DIV></DIV>
<DIV
style="BORDER-TOP: #dddddd 1px solid; FONT-SIZE: 10pt; MARGIN-BOTTOM: 10px; WIDTH: 100%; COLOR: #909090; MARGIN-RIGHT: 10px; PADDING-TOP: 9px; FONT-FAMILY: Verdana; HEIGHT: 42px; BACKGROUND-COLOR: #ffffff"><NOBR><SPAN
title="Join Windows Live to share photos using Windows Live Photo E-mail.">Online
pictures are available for 30 days. <A style="COLOR: #0088e4"
href="http://g.msn.com/5meen_us/175">Get Windows Live Mail desktop to create
your own photo e-mails. </A></SPAN></NOBR></DIV></BODY></HTML>
<DIV
style="BORDER-TOP: #dddddd 1px solid; FONT-SIZE: 10pt; MARGIN-BOTTOM: 10px; WIDTH: 100%; COLOR: #909090; MARGIN-RIGHT: 10px; PADDING-TOP: 9px; FONT-FAMILY: Verdana; HEIGHT: 42px; BACKGROUND-COLOR: #ffffff"><NOBR><SPAN
title="Join Windows Live to share photos using Windows Live Photo E-mail.">Online
pictures are available for 30 days. <A style="COLOR: #0088e4"
href="http://g.msn.com/5meen_us/175">Get Windows Live Mail desktop to create
your own photo e-mails. </A></SPAN></NOBR></DIV></BODY></HTML>

View File

@@ -72,5 +72,3 @@ q:after {
.fixme:before {content:"Fix me: "; font-weight:bold; color:#C00; }
#applicability {margin: 1em 5%; font-style:italic;}
/* vim: et sw=4 sts=4 */

View File

@@ -1,157 +0,0 @@
<?php
/**
* Filesystem tools not provided by default; can recursively create, copy
* and delete folders. Some template methods are provided for extensibility.
*
* @note This class must be instantiated to be used, although it does
* not maintain state.
*/
class FSTools
{
private static $singleton;
/**
* Returns a global instance of FSTools
*/
static public function singleton() {
if (empty(FSTools::$singleton)) FSTools::$singleton = new FSTools();
return FSTools::$singleton;
}
/**
* Sets our global singleton to something else; useful for overloading
* functions.
*/
static public function setSingleton($singleton) {
FSTools::$singleton = $singleton;
}
/**
* Recursively creates a directory
* @param string $folder Name of folder to create
* @note Adapted from the PHP manual comment 76612
*/
public function mkdirr($folder) {
$folders = preg_split("#[\\\\/]#", $folder);
$base = '';
for($i = 0, $c = count($folders); $i < $c; $i++) {
if(empty($folders[$i])) {
if (!$i) {
// special case for root level
$base .= DIRECTORY_SEPARATOR;
}
continue;
}
$base .= $folders[$i];
if(!is_dir($base)){
$this->mkdir($base);
}
$base .= DIRECTORY_SEPARATOR;
}
}
/**
* Copy a file, or recursively copy a folder and its contents; modified
* so that copied files, if PHP, have includes removed
* @note Adapted from http://aidanlister.com/repos/v/function.copyr.php
*/
public function copyr($source, $dest) {
// Simple copy for a file
if (is_file($source)) {
return $this->copy($source, $dest);
}
// Make destination directory
if (!is_dir($dest)) {
$this->mkdir($dest);
}
// Loop through the folder
$dir = $this->dir($source);
while ( false !== ($entry = $dir->read()) ) {
// Skip pointers
if ($entry == '.' || $entry == '..') {
continue;
}
if (!$this->copyable($entry)) {
continue;
}
// Deep copy directories
if ($dest !== "$source/$entry") {
$this->copyr("$source/$entry", "$dest/$entry");
}
}
// Clean up
$dir->close();
return true;
}
/**
* Overloadable function that tests a filename for copyability. By
* default, everything should be copied; you can restrict things to
* ignore hidden files, unreadable files, etc. This function
* applies to copyr().
*/
public function copyable($file) {
return true;
}
/**
* Delete a file, or a folder and its contents
* @note Adapted from http://aidanlister.com/repos/v/function.rmdirr.php
*/
public function rmdirr($dirname)
{
// Sanity check
if (!$this->file_exists($dirname)) {
return false;
}
// Simple delete for a file
if ($this->is_file($dirname) || $this->is_link($dirname)) {
return $this->unlink($dirname);
}
// Loop through the folder
$dir = $this->dir($dirname);
while (false !== $entry = $dir->read()) {
// Skip pointers
if ($entry == '.' || $entry == '..') {
continue;
}
// Recurse
$this->rmdirr($dirname . DIRECTORY_SEPARATOR . $entry);
}
// Clean up
$dir->close();
return $this->rmdir($dirname);
}
/**
* Recursively globs a directory.
*/
public function globr($dir, $pattern, $flags = NULL) {
$files = $this->glob("$dir/$pattern", $flags);
if ($files === false) $files = array();
$sub_dirs = $this->glob("$dir/*", GLOB_ONLYDIR);
if ($sub_dirs === false) $sub_dirs = array();
foreach ($sub_dirs as $sub_dir) {
$sub_files = $this->globr($sub_dir, $pattern, $flags);
$files = array_merge($files, $sub_files);
}
return $files;
}
/**
* Allows for PHP functions to be called and be stubbed.
* @warning This function will not work for functions that need
* to pass references; manually define a stub function for those.
*/
public function __call($name, $args) {
return call_user_func_array($name, $args);
}
}
// vim: et sw=4 sts=4

View File

@@ -1,126 +0,0 @@
<?php
/**
* Represents a file in the filesystem
*
* @warning Be sure to distinguish between get() and write() versus
* read() and put(), the former operates on the entire file, while
* the latter operates on a handle.
*/
class FSTools_File
{
/** Filename of file this object represents */
protected $name;
/** Handle for the file */
protected $handle = false;
/** Instance of FSTools for interfacing with filesystem */
protected $fs;
/**
* Filename of file you wish to instantiate.
* @note This file need not exist
*/
public function __construct($name, $fs = false) {
$this->name = $name;
$this->fs = $fs ? $fs : FSTools::singleton();
}
/** Returns the filename of the file. */
public function getName() {return $this->name;}
/** Returns directory of the file without trailing slash */
public function getDirectory() {return $this->fs->dirname($this->name);}
/**
* Retrieves the contents of a file
* @todo Throw an exception if file doesn't exist
*/
public function get() {
return $this->fs->file_get_contents($this->name);
}
/** Writes contents to a file, creates new file if necessary */
public function write($contents) {
return $this->fs->file_put_contents($this->name, $contents);
}
/** Deletes the file */
public function delete() {
return $this->fs->unlink($this->name);
}
/** Returns true if file exists and is a file. */
public function exists() {
return $this->fs->is_file($this->name);
}
/** Returns last file modification time */
public function getMTime() {
return $this->fs->filemtime($this->name);
}
/**
* Chmod a file
* @note We ignore errors because of some weird owner trickery due
* to SVN duality
*/
public function chmod($octal_code) {
return @$this->fs->chmod($this->name, $octal_code);
}
/** Opens file's handle */
public function open($mode) {
if ($this->handle) $this->close();
$this->handle = $this->fs->fopen($this->name, $mode);
return true;
}
/** Closes file's handle */
public function close() {
if (!$this->handle) return false;
$status = $this->fs->fclose($this->handle);
$this->handle = false;
return $status;
}
/** Retrieves a line from an open file, with optional max length $length */
public function getLine($length = null) {
if (!$this->handle) $this->open('r');
if ($length === null) return $this->fs->fgets($this->handle);
else return $this->fs->fgets($this->handle, $length);
}
/** Retrieves a character from an open file */
public function getChar() {
if (!$this->handle) $this->open('r');
return $this->fs->fgetc($this->handle);
}
/** Retrieves an $length bytes of data from an open data */
public function read($length) {
if (!$this->handle) $this->open('r');
return $this->fs->fread($this->handle, $length);
}
/** Writes to an open file */
public function put($string) {
if (!$this->handle) $this->open('a');
return $this->fs->fwrite($this->handle, $string);
}
/** Returns TRUE if the end of the file has been reached */
public function eof() {
if (!$this->handle) return true;
return $this->fs->feof($this->handle);
}
public function __destruct() {
if ($this->handle) $this->close();
}
}
// vim: et sw=4 sts=4

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@@ -1,25 +0,0 @@
<?php
/**
* @file
* Convenience file that registers autoload handler for HTML Purifier.
*
* @warning
* This autoloader does not contain the compatibility code seen in
* HTMLPurifier_Bootstrap; the user is expected to make any necessary
* changes to use this library.
*/
if (function_exists('spl_autoload_register')) {
spl_autoload_register(array('HTMLPurifierExtras', 'autoload'));
if (function_exists('__autoload')) {
// Be polite and ensure that userland autoload gets retained
spl_autoload_register('__autoload');
}
} elseif (!function_exists('__autoload')) {
function __autoload($class) {
return HTMLPurifierExtras::autoload($class);
}
}
// vim: et sw=4 sts=4

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@@ -1,29 +0,0 @@
<?php
/**
* Meta-class for HTML Purifier's extra class hierarchies, similar to
* HTMLPurifier_Bootstrap.
*/
class HTMLPurifierExtras
{
public static function autoload($class) {
$path = HTMLPurifierExtras::getPath($class);
if (!$path) return false;
require $path;
return true;
}
public static function getPath($class) {
if (
strncmp('FSTools', $class, 7) !== 0 &&
strncmp('ConfigDoc', $class, 9) !== 0
) return false;
// Custom implementations can go here
// Standard implementation:
return str_replace('_', '/', $class) . '.php';
}
}
// vim: et sw=4 sts=4

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@@ -1,32 +0,0 @@
HTML Purifier Extras
The Method Behind The Madness!
The extras/ folder in HTML Purifier contains--you guessed it--extra things
for HTML Purifier. Specifically, these are two extra libraries called
FSTools and ConfigSchema. They're extra for a reason: you don't need them
if you're using HTML Purifier for normal usage: filtering HTML. However,
if you're a developer, and would like to test HTML Purifier, or need to
use one of HTML Purifier's maintenance scripts, chances are they'll need
these libraries. Who knows: maybe you'll find them useful too!
Here are the libraries:
FSTools
-------
Short for File System Tools, this is a poor-man's object-oriented wrapper for
the filesystem. It currently consists of two classes:
- FSTools: This is a singleton that contains a manner of useful functions
such as recursive glob, directory removal, etc, as well as the ability
to call arbitrary native PHP functions through it like $FS->fopen(...).
This makes it a lot simpler to mock these filesystem calls for unit testing.
- FSTools_File: This object represents a single file, and has almost any
method imaginable one would need.
Check the files themselves for more information.
vim: et sw=4 sts=4

View File

@@ -5,7 +5,5 @@
*/
set_include_path(dirname(__FILE__) . PATH_SEPARATOR . get_include_path() );
require_once 'HTMLPurifier/Bootstrap.php';
require_once 'HTMLPurifier.autoload.php';
require_once 'HTMLPurifier.php';
// vim: et sw=4 sts=4

View File

@@ -1,21 +0,0 @@
<?php
/**
* @file
* Convenience file that registers autoload handler for HTML Purifier.
*/
if (function_exists('spl_autoload_register') && function_exists('spl_autoload_unregister')) {
// We need unregister for our pre-registering functionality
HTMLPurifier_Bootstrap::registerAutoload();
if (function_exists('__autoload')) {
// Be polite and ensure that userland autoload gets retained
spl_autoload_register('__autoload');
}
} elseif (!function_exists('__autoload')) {
function __autoload($class) {
return HTMLPurifier_Bootstrap::autoload($class);
}
}
// vim: et sw=4 sts=4

View File

@@ -1,23 +1,20 @@
<?php
/**
* @file
* Defines a function wrapper for HTML Purifier for quick use.
* Function wrapper for HTML Purifier for quick use.
* @note This function only includes the library when it is called. While
* this is efficient for instances when you only use HTML Purifier
* on a few of your pages, it murders bytecode caching. You still
* need to add HTML Purifier to your path.
* @note ''HTMLPurifier()'' is NOT the same as ''new HTMLPurifier()''
*/
/**
* Purify HTML.
* @param $html String HTML to purify
* @param $config Configuration to use, can be any value accepted by
* HTMLPurifier_Config::create()
*/
function HTMLPurifier($html, $config = null) {
static $purifier = false;
if (!$purifier) {
require_once 'HTMLPurifier.php';
$purifier = new HTMLPurifier();
}
return $purifier->purify($html, $config);
}
// vim: et sw=4 sts=4

View File

@@ -1,210 +0,0 @@
<?php
/**
* @file
* This file was auto-generated by generate-includes.php and includes all of
* the core files required by HTML Purifier. Use this if performance is a
* primary concern and you are using an opcode cache. PLEASE DO NOT EDIT THIS
* FILE, changes will be overwritten the next time the script is run.
*
* @version 4.1.0
*
* @warning
* You must *not* include any other HTML Purifier files before this file,
* because 'require' not 'require_once' is used.
*
* @warning
* This file requires that the include path contains the HTML Purifier
* library directory; this is not auto-set.
*/
require 'HTMLPurifier.php';
require 'HTMLPurifier/AttrCollections.php';
require 'HTMLPurifier/AttrDef.php';
require 'HTMLPurifier/AttrTransform.php';
require 'HTMLPurifier/AttrTypes.php';
require 'HTMLPurifier/AttrValidator.php';
require 'HTMLPurifier/Bootstrap.php';
require 'HTMLPurifier/Definition.php';
require 'HTMLPurifier/CSSDefinition.php';
require 'HTMLPurifier/ChildDef.php';
require 'HTMLPurifier/Config.php';
require 'HTMLPurifier/ConfigSchema.php';
require 'HTMLPurifier/ContentSets.php';
require 'HTMLPurifier/Context.php';
require 'HTMLPurifier/DefinitionCache.php';
require 'HTMLPurifier/DefinitionCacheFactory.php';
require 'HTMLPurifier/Doctype.php';
require 'HTMLPurifier/DoctypeRegistry.php';
require 'HTMLPurifier/ElementDef.php';
require 'HTMLPurifier/Encoder.php';
require 'HTMLPurifier/EntityLookup.php';
require 'HTMLPurifier/EntityParser.php';
require 'HTMLPurifier/ErrorCollector.php';
require 'HTMLPurifier/ErrorStruct.php';
require 'HTMLPurifier/Exception.php';
require 'HTMLPurifier/Filter.php';
require 'HTMLPurifier/Generator.php';
require 'HTMLPurifier/HTMLDefinition.php';
require 'HTMLPurifier/HTMLModule.php';
require 'HTMLPurifier/HTMLModuleManager.php';
require 'HTMLPurifier/IDAccumulator.php';
require 'HTMLPurifier/Injector.php';
require 'HTMLPurifier/Language.php';
require 'HTMLPurifier/LanguageFactory.php';
require 'HTMLPurifier/Length.php';
require 'HTMLPurifier/Lexer.php';
require 'HTMLPurifier/PercentEncoder.php';
require 'HTMLPurifier/PropertyList.php';
require 'HTMLPurifier/PropertyListIterator.php';
require 'HTMLPurifier/Strategy.php';
require 'HTMLPurifier/StringHash.php';
require 'HTMLPurifier/StringHashParser.php';
require 'HTMLPurifier/TagTransform.php';
require 'HTMLPurifier/Token.php';
require 'HTMLPurifier/TokenFactory.php';
require 'HTMLPurifier/URI.php';
require 'HTMLPurifier/URIDefinition.php';
require 'HTMLPurifier/URIFilter.php';
require 'HTMLPurifier/URIParser.php';
require 'HTMLPurifier/URIScheme.php';
require 'HTMLPurifier/URISchemeRegistry.php';
require 'HTMLPurifier/UnitConverter.php';
require 'HTMLPurifier/VarParser.php';
require 'HTMLPurifier/VarParserException.php';
require 'HTMLPurifier/AttrDef/CSS.php';
require 'HTMLPurifier/AttrDef/Enum.php';
require 'HTMLPurifier/AttrDef/Integer.php';
require 'HTMLPurifier/AttrDef/Lang.php';
require 'HTMLPurifier/AttrDef/Switch.php';
require 'HTMLPurifier/AttrDef/Text.php';
require 'HTMLPurifier/AttrDef/URI.php';
require 'HTMLPurifier/AttrDef/CSS/Number.php';
require 'HTMLPurifier/AttrDef/CSS/AlphaValue.php';
require 'HTMLPurifier/AttrDef/CSS/Background.php';
require 'HTMLPurifier/AttrDef/CSS/BackgroundPosition.php';
require 'HTMLPurifier/AttrDef/CSS/Border.php';
require 'HTMLPurifier/AttrDef/CSS/Color.php';
require 'HTMLPurifier/AttrDef/CSS/Composite.php';
require 'HTMLPurifier/AttrDef/CSS/DenyElementDecorator.php';
require 'HTMLPurifier/AttrDef/CSS/Filter.php';
require 'HTMLPurifier/AttrDef/CSS/Font.php';
require 'HTMLPurifier/AttrDef/CSS/FontFamily.php';
require 'HTMLPurifier/AttrDef/CSS/ImportantDecorator.php';
require 'HTMLPurifier/AttrDef/CSS/Length.php';
require 'HTMLPurifier/AttrDef/CSS/ListStyle.php';
require 'HTMLPurifier/AttrDef/CSS/Multiple.php';
require 'HTMLPurifier/AttrDef/CSS/Percentage.php';
require 'HTMLPurifier/AttrDef/CSS/TextDecoration.php';
require 'HTMLPurifier/AttrDef/CSS/URI.php';
require 'HTMLPurifier/AttrDef/HTML/Bool.php';
require 'HTMLPurifier/AttrDef/HTML/Nmtokens.php';
require 'HTMLPurifier/AttrDef/HTML/Class.php';
require 'HTMLPurifier/AttrDef/HTML/Color.php';
require 'HTMLPurifier/AttrDef/HTML/FrameTarget.php';
require 'HTMLPurifier/AttrDef/HTML/ID.php';
require 'HTMLPurifier/AttrDef/HTML/Pixels.php';
require 'HTMLPurifier/AttrDef/HTML/Length.php';
require 'HTMLPurifier/AttrDef/HTML/LinkTypes.php';
require 'HTMLPurifier/AttrDef/HTML/MultiLength.php';
require 'HTMLPurifier/AttrDef/URI/Email.php';
require 'HTMLPurifier/AttrDef/URI/Host.php';
require 'HTMLPurifier/AttrDef/URI/IPv4.php';
require 'HTMLPurifier/AttrDef/URI/IPv6.php';
require 'HTMLPurifier/AttrDef/URI/Email/SimpleCheck.php';
require 'HTMLPurifier/AttrTransform/Background.php';
require 'HTMLPurifier/AttrTransform/BdoDir.php';
require 'HTMLPurifier/AttrTransform/BgColor.php';
require 'HTMLPurifier/AttrTransform/BoolToCSS.php';
require 'HTMLPurifier/AttrTransform/Border.php';
require 'HTMLPurifier/AttrTransform/EnumToCSS.php';
require 'HTMLPurifier/AttrTransform/ImgRequired.php';
require 'HTMLPurifier/AttrTransform/ImgSpace.php';
require 'HTMLPurifier/AttrTransform/Input.php';
require 'HTMLPurifier/AttrTransform/Lang.php';
require 'HTMLPurifier/AttrTransform/Length.php';
require 'HTMLPurifier/AttrTransform/Name.php';
require 'HTMLPurifier/AttrTransform/NameSync.php';
require 'HTMLPurifier/AttrTransform/SafeEmbed.php';
require 'HTMLPurifier/AttrTransform/SafeObject.php';
require 'HTMLPurifier/AttrTransform/SafeParam.php';
require 'HTMLPurifier/AttrTransform/ScriptRequired.php';
require 'HTMLPurifier/AttrTransform/Textarea.php';
require 'HTMLPurifier/ChildDef/Chameleon.php';
require 'HTMLPurifier/ChildDef/Custom.php';
require 'HTMLPurifier/ChildDef/Empty.php';
require 'HTMLPurifier/ChildDef/Required.php';
require 'HTMLPurifier/ChildDef/Optional.php';
require 'HTMLPurifier/ChildDef/StrictBlockquote.php';
require 'HTMLPurifier/ChildDef/Table.php';
require 'HTMLPurifier/DefinitionCache/Decorator.php';
require 'HTMLPurifier/DefinitionCache/Null.php';
require 'HTMLPurifier/DefinitionCache/Serializer.php';
require 'HTMLPurifier/DefinitionCache/Decorator/Cleanup.php';
require 'HTMLPurifier/DefinitionCache/Decorator/Memory.php';
require 'HTMLPurifier/HTMLModule/Bdo.php';
require 'HTMLPurifier/HTMLModule/CommonAttributes.php';
require 'HTMLPurifier/HTMLModule/Edit.php';
require 'HTMLPurifier/HTMLModule/Forms.php';
require 'HTMLPurifier/HTMLModule/Hypertext.php';
require 'HTMLPurifier/HTMLModule/Image.php';
require 'HTMLPurifier/HTMLModule/Legacy.php';
require 'HTMLPurifier/HTMLModule/List.php';
require 'HTMLPurifier/HTMLModule/Name.php';
require 'HTMLPurifier/HTMLModule/NonXMLCommonAttributes.php';
require 'HTMLPurifier/HTMLModule/Object.php';
require 'HTMLPurifier/HTMLModule/Presentation.php';
require 'HTMLPurifier/HTMLModule/Proprietary.php';
require 'HTMLPurifier/HTMLModule/Ruby.php';
require 'HTMLPurifier/HTMLModule/SafeEmbed.php';
require 'HTMLPurifier/HTMLModule/SafeObject.php';
require 'HTMLPurifier/HTMLModule/Scripting.php';
require 'HTMLPurifier/HTMLModule/StyleAttribute.php';
require 'HTMLPurifier/HTMLModule/Tables.php';
require 'HTMLPurifier/HTMLModule/Target.php';
require 'HTMLPurifier/HTMLModule/Text.php';
require 'HTMLPurifier/HTMLModule/Tidy.php';
require 'HTMLPurifier/HTMLModule/XMLCommonAttributes.php';
require 'HTMLPurifier/HTMLModule/Tidy/Name.php';
require 'HTMLPurifier/HTMLModule/Tidy/Proprietary.php';
require 'HTMLPurifier/HTMLModule/Tidy/XHTMLAndHTML4.php';
require 'HTMLPurifier/HTMLModule/Tidy/Strict.php';
require 'HTMLPurifier/HTMLModule/Tidy/Transitional.php';
require 'HTMLPurifier/HTMLModule/Tidy/XHTML.php';
require 'HTMLPurifier/Injector/AutoParagraph.php';
require 'HTMLPurifier/Injector/DisplayLinkURI.php';
require 'HTMLPurifier/Injector/Linkify.php';
require 'HTMLPurifier/Injector/PurifierLinkify.php';
require 'HTMLPurifier/Injector/RemoveEmpty.php';
require 'HTMLPurifier/Injector/RemoveSpansWithoutAttributes.php';
require 'HTMLPurifier/Injector/SafeObject.php';
require 'HTMLPurifier/Lexer/DOMLex.php';
require 'HTMLPurifier/Lexer/DirectLex.php';
require 'HTMLPurifier/Strategy/Composite.php';
require 'HTMLPurifier/Strategy/Core.php';
require 'HTMLPurifier/Strategy/FixNesting.php';
require 'HTMLPurifier/Strategy/MakeWellFormed.php';
require 'HTMLPurifier/Strategy/RemoveForeignElements.php';
require 'HTMLPurifier/Strategy/ValidateAttributes.php';
require 'HTMLPurifier/TagTransform/Font.php';
require 'HTMLPurifier/TagTransform/Simple.php';
require 'HTMLPurifier/Token/Comment.php';
require 'HTMLPurifier/Token/Tag.php';
require 'HTMLPurifier/Token/Empty.php';
require 'HTMLPurifier/Token/End.php';
require 'HTMLPurifier/Token/Start.php';
require 'HTMLPurifier/Token/Text.php';
require 'HTMLPurifier/URIFilter/DisableExternal.php';
require 'HTMLPurifier/URIFilter/DisableExternalResources.php';
require 'HTMLPurifier/URIFilter/HostBlacklist.php';
require 'HTMLPurifier/URIFilter/MakeAbsolute.php';
require 'HTMLPurifier/URIFilter/Munge.php';
require 'HTMLPurifier/URIScheme/data.php';
require 'HTMLPurifier/URIScheme/ftp.php';
require 'HTMLPurifier/URIScheme/http.php';
require 'HTMLPurifier/URIScheme/https.php';
require 'HTMLPurifier/URIScheme/mailto.php';
require 'HTMLPurifier/URIScheme/news.php';
require 'HTMLPurifier/URIScheme/nntp.php';
require 'HTMLPurifier/VarParser/Flexible.php';
require 'HTMLPurifier/VarParser/Native.php';

View File

@@ -1,30 +0,0 @@
<?php
/**
* @file
* Emulation layer for code that used kses(), substituting in HTML Purifier.
*/
require_once dirname(__FILE__) . '/HTMLPurifier.auto.php';
function kses($string, $allowed_html, $allowed_protocols = null) {
$config = HTMLPurifier_Config::createDefault();
$allowed_elements = array();
$allowed_attributes = array();
foreach ($allowed_html as $element => $attributes) {
$allowed_elements[$element] = true;
foreach ($attributes as $attribute => $x) {
$allowed_attributes["$element.$attribute"] = true;
}
}
$config->set('HTML.AllowedElements', $allowed_elements);
$config->set('HTML.AllowedAttributes', $allowed_attributes);
$allowed_schemes = array();
if ($allowed_protocols !== null) {
$config->set('URI.AllowedSchemes', $allowed_protocols);
}
$purifier = new HTMLPurifier($config);
return $purifier->purify($string);
}
// vim: et sw=4 sts=4

View File

@@ -1,11 +0,0 @@
<?php
/**
* @file
* Convenience stub file that adds HTML Purifier's library file to the path
* without any other side-effects.
*/
set_include_path(dirname(__FILE__) . PATH_SEPARATOR . get_include_path() );
// vim: et sw=4 sts=4

View File

@@ -1,11 +1,12 @@
<?php
/*! @mainpage
*
/*!
* @mainpage
*
* HTML Purifier is an HTML filter that will take an arbitrary snippet of
* HTML and rigorously test, validate and filter it into a version that
* is safe for output onto webpages. It achieves this by:
*
*
* -# Lexing (parsing into tokens) the document,
* -# Executing various strategies on the tokens:
* -# Removing all elements not in the whitelist,
@@ -13,14 +14,16 @@
* -# Fixing the nesting of the nodes, and
* -# Validating attributes of the nodes; and
* -# Generating HTML from the purified tokens.
*
*
* However, most users will only need to interface with the HTMLPurifier
* and HTMLPurifier_Config.
* class, so this massive amount of infrastructure is usually concealed.
* If you plan on working with the internals, be sure to include
* HTMLPurifier_ConfigSchema and HTMLPurifier_Config.
*/
/*
HTML Purifier 4.1.0 - Standards Compliant HTML Filtering
Copyright (C) 2006-2008 Edward Z. Yang
HTML Purifier 2.0.1 - Standards Compliant HTML Filtering
Copyright (C) 2006 Edward Z. Yang
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
@@ -37,46 +40,53 @@
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
// almost every class has an undocumented dependency to these, so make sure
// they get included
require_once 'HTMLPurifier/ConfigSchema.php'; // important
require_once 'HTMLPurifier/Config.php';
require_once 'HTMLPurifier/Context.php';
require_once 'HTMLPurifier/Lexer.php';
require_once 'HTMLPurifier/Generator.php';
require_once 'HTMLPurifier/Strategy/Core.php';
require_once 'HTMLPurifier/Encoder.php';
require_once 'HTMLPurifier/ErrorCollector.php';
require_once 'HTMLPurifier/LanguageFactory.php';
HTMLPurifier_ConfigSchema::define(
'Core', 'CollectErrors', false, 'bool', '
Whether or not to collect errors found while filtering the document. This
is a useful way to give feedback to your users. CURRENTLY NOT IMPLEMENTED.
This directive has been available since 2.0.0.
');
/**
* Facade that coordinates HTML Purifier's subsystems in order to purify HTML.
*
* @note There are several points in which configuration can be specified
* for HTML Purifier. The precedence of these (from lowest to
* highest) is as follows:
* -# Instance: new HTMLPurifier($config)
* -# Invocation: purify($html, $config)
* These configurations are entirely independent of each other and
* are *not* merged (this behavior may change in the future).
*
* @todo We need an easier way to inject strategies using the configuration
* object.
* Main library execution class.
*
* Facade that performs calls to the HTMLPurifier_Lexer,
* HTMLPurifier_Strategy and HTMLPurifier_Generator subsystems in order to
* purify HTML.
*
* @todo We need an easier way to inject strategies, it'll probably end
* up getting done through config though.
*/
class HTMLPurifier
{
/** Version of HTML Purifier */
public $version = '4.1.0';
/** Constant with version of HTML Purifier */
const VERSION = '4.1.0';
/** Global configuration object */
public $config;
/** Array of extra HTMLPurifier_Filter objects to run on HTML, for backwards compatibility */
private $filters = array();
/** Single instance of HTML Purifier */
private static $instance;
protected $strategy, $generator;
var $version = '2.0.1';
var $config;
var $filters;
var $strategy, $generator;
/**
* Resultant HTMLPurifier_Context of last run purification. Is an array
* of contexts if the last called method was purifyArray().
* Final HTMLPurifier_Context of last run purification. Might be an array.
* @public
*/
public $context;
var $context;
/**
* Initializes the purifier.
* @param $config Optional HTMLPurifier_Config object for all instances of
@@ -85,26 +95,26 @@ class HTMLPurifier
* The parameter can also be any type that
* HTMLPurifier_Config::create() supports.
*/
public function __construct($config = null) {
function HTMLPurifier($config = null) {
$this->config = HTMLPurifier_Config::create($config);
$this->strategy = new HTMLPurifier_Strategy_Core();
$this->generator = new HTMLPurifier_Generator();
}
/**
* Adds a filter to process the output. First come first serve
* @param $filter HTMLPurifier_Filter object
*/
public function addFilter($filter) {
trigger_error('HTMLPurifier->addFilter() is deprecated, use configuration directives in the Filter namespace or Filter.Custom', E_USER_WARNING);
function addFilter($filter) {
$this->filters[] = $filter;
}
/**
* Filters an HTML snippet/document to be XSS-free and standards-compliant.
*
*
* @param $html String of HTML to purify
* @param $config HTMLPurifier_Config object for this operation, if omitted,
* defaults to the config object specified during this
@@ -112,63 +122,39 @@ class HTMLPurifier
* that HTMLPurifier_Config::create() supports.
* @return Purified HTML
*/
public function purify($html, $config = null) {
// :TODO: make the config merge in, instead of replace
function purify($html, $config = null) {
$config = $config ? HTMLPurifier_Config::create($config) : $this->config;
// implementation is partially environment dependant, partially
// configuration dependant
$lexer = HTMLPurifier_Lexer::create($config);
$context = new HTMLPurifier_Context();
// setup HTML generator
$this->generator = new HTMLPurifier_Generator($config, $context);
// our friendly neighborhood generator, all primed with configuration too!
$this->generator->generateFromTokens(array(), $config, $context);
$context->register('Generator', $this->generator);
// set up global context variables
if ($config->get('Core.CollectErrors')) {
if ($config->get('Core', 'CollectErrors')) {
// may get moved out if other facilities use it
$language_factory = HTMLPurifier_LanguageFactory::instance();
$language = $language_factory->create($config, $context);
$context->register('Locale', $language);
$error_collector = new HTMLPurifier_ErrorCollector($context);
$context->register('ErrorCollector', $error_collector);
}
// setup id_accumulator context, necessary due to the fact that
// AttrValidator can be called from many places
$id_accumulator = HTMLPurifier_IDAccumulator::build($config, $context);
$context->register('IDAccumulator', $id_accumulator);
$html = HTMLPurifier_Encoder::convertToUTF8($html, $config, $context);
// setup filters
$filter_flags = $config->getBatch('Filter');
$custom_filters = $filter_flags['Custom'];
unset($filter_flags['Custom']);
$filters = array();
foreach ($filter_flags as $filter => $flag) {
if (!$flag) continue;
if (strpos($filter, '.') !== false) continue;
$class = "HTMLPurifier_Filter_$filter";
$filters[] = new $class;
for ($i = 0, $size = count($this->filters); $i < $size; $i++) {
$html = $this->filters[$i]->preFilter($html, $config, $context);
}
foreach ($custom_filters as $filter) {
// maybe "HTMLPurifier_Filter_$filter", but be consistent with AutoFormat
$filters[] = $filter;
}
$filters = array_merge($filters, $this->filters);
// maybe prepare(), but later
for ($i = 0, $filter_size = count($filters); $i < $filter_size; $i++) {
$html = $filters[$i]->preFilter($html, $config, $context);
}
// purified HTML
$html =
$html =
$this->generator->generateFromTokens(
// list of tokens
$this->strategy->execute(
@@ -178,25 +164,26 @@ class HTMLPurifier
$html, $config, $context
),
$config, $context
)
),
$config, $context
);
for ($i = $filter_size - 1; $i >= 0; $i--) {
$html = $filters[$i]->postFilter($html, $config, $context);
for ($i = $size - 1; $i >= 0; $i--) {
$html = $this->filters[$i]->postFilter($html, $config, $context);
}
$html = HTMLPurifier_Encoder::convertFromUTF8($html, $config, $context);
$this->context =& $context;
return $html;
}
/**
* Filters an array of HTML snippets
* @param $config Optional HTMLPurifier_Config object for this operation.
* See HTMLPurifier::purify() for more details.
* @return Array of purified HTML
*/
public function purifyArray($array_of_html, $config = null) {
function purifyArray($array_of_html, $config = null) {
$context_array = array();
foreach ($array_of_html as $key => $html) {
$array_of_html[$key] = $this->purify($html, $config);
@@ -205,33 +192,24 @@ class HTMLPurifier
$this->context = $context_array;
return $array_of_html;
}
/**
* Singleton for enforcing just one HTML Purifier in your system
* @param $prototype Optional prototype HTMLPurifier instance to
* overload singleton with, or HTMLPurifier_Config
* instance to configure the generated version with.
*/
public static function instance($prototype = null) {
if (!self::$instance || $prototype) {
if ($prototype instanceof HTMLPurifier) {
self::$instance = $prototype;
function &getInstance($prototype = null) {
static $htmlpurifier;
if (!$htmlpurifier || $prototype) {
if (is_a($prototype, 'HTMLPurifier')) {
$htmlpurifier = $prototype;
} elseif ($prototype) {
self::$instance = new HTMLPurifier($prototype);
$htmlpurifier = new HTMLPurifier(HTMLPurifier_Config::create($prototype));
} else {
self::$instance = new HTMLPurifier();
$htmlpurifier = new HTMLPurifier();
}
}
return self::$instance;
return $htmlpurifier;
}
/**
* @note Backwards compatibility, see instance()
*/
public static function getInstance($prototype = null) {
return HTMLPurifier::instance($prototype);
}
}
// vim: et sw=4 sts=4

View File

@@ -1,204 +0,0 @@
<?php
/**
* @file
* This file was auto-generated by generate-includes.php and includes all of
* the core files required by HTML Purifier. This is a convenience stub that
* includes all files using dirname(__FILE__) and require_once. PLEASE DO NOT
* EDIT THIS FILE, changes will be overwritten the next time the script is run.
*
* Changes to include_path are not necessary.
*/
$__dir = dirname(__FILE__);
require_once $__dir . '/HTMLPurifier.php';
require_once $__dir . '/HTMLPurifier/AttrCollections.php';
require_once $__dir . '/HTMLPurifier/AttrDef.php';
require_once $__dir . '/HTMLPurifier/AttrTransform.php';
require_once $__dir . '/HTMLPurifier/AttrTypes.php';
require_once $__dir . '/HTMLPurifier/AttrValidator.php';
require_once $__dir . '/HTMLPurifier/Bootstrap.php';
require_once $__dir . '/HTMLPurifier/Definition.php';
require_once $__dir . '/HTMLPurifier/CSSDefinition.php';
require_once $__dir . '/HTMLPurifier/ChildDef.php';
require_once $__dir . '/HTMLPurifier/Config.php';
require_once $__dir . '/HTMLPurifier/ConfigSchema.php';
require_once $__dir . '/HTMLPurifier/ContentSets.php';
require_once $__dir . '/HTMLPurifier/Context.php';
require_once $__dir . '/HTMLPurifier/DefinitionCache.php';
require_once $__dir . '/HTMLPurifier/DefinitionCacheFactory.php';
require_once $__dir . '/HTMLPurifier/Doctype.php';
require_once $__dir . '/HTMLPurifier/DoctypeRegistry.php';
require_once $__dir . '/HTMLPurifier/ElementDef.php';
require_once $__dir . '/HTMLPurifier/Encoder.php';
require_once $__dir . '/HTMLPurifier/EntityLookup.php';
require_once $__dir . '/HTMLPurifier/EntityParser.php';
require_once $__dir . '/HTMLPurifier/ErrorCollector.php';
require_once $__dir . '/HTMLPurifier/ErrorStruct.php';
require_once $__dir . '/HTMLPurifier/Exception.php';
require_once $__dir . '/HTMLPurifier/Filter.php';
require_once $__dir . '/HTMLPurifier/Generator.php';
require_once $__dir . '/HTMLPurifier/HTMLDefinition.php';
require_once $__dir . '/HTMLPurifier/HTMLModule.php';
require_once $__dir . '/HTMLPurifier/HTMLModuleManager.php';
require_once $__dir . '/HTMLPurifier/IDAccumulator.php';
require_once $__dir . '/HTMLPurifier/Injector.php';
require_once $__dir . '/HTMLPurifier/Language.php';
require_once $__dir . '/HTMLPurifier/LanguageFactory.php';
require_once $__dir . '/HTMLPurifier/Length.php';
require_once $__dir . '/HTMLPurifier/Lexer.php';
require_once $__dir . '/HTMLPurifier/PercentEncoder.php';
require_once $__dir . '/HTMLPurifier/PropertyList.php';
require_once $__dir . '/HTMLPurifier/PropertyListIterator.php';
require_once $__dir . '/HTMLPurifier/Strategy.php';
require_once $__dir . '/HTMLPurifier/StringHash.php';
require_once $__dir . '/HTMLPurifier/StringHashParser.php';
require_once $__dir . '/HTMLPurifier/TagTransform.php';
require_once $__dir . '/HTMLPurifier/Token.php';
require_once $__dir . '/HTMLPurifier/TokenFactory.php';
require_once $__dir . '/HTMLPurifier/URI.php';
require_once $__dir . '/HTMLPurifier/URIDefinition.php';
require_once $__dir . '/HTMLPurifier/URIFilter.php';
require_once $__dir . '/HTMLPurifier/URIParser.php';
require_once $__dir . '/HTMLPurifier/URIScheme.php';
require_once $__dir . '/HTMLPurifier/URISchemeRegistry.php';
require_once $__dir . '/HTMLPurifier/UnitConverter.php';
require_once $__dir . '/HTMLPurifier/VarParser.php';
require_once $__dir . '/HTMLPurifier/VarParserException.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS.php';
require_once $__dir . '/HTMLPurifier/AttrDef/Enum.php';
require_once $__dir . '/HTMLPurifier/AttrDef/Integer.php';
require_once $__dir . '/HTMLPurifier/AttrDef/Lang.php';
require_once $__dir . '/HTMLPurifier/AttrDef/Switch.php';
require_once $__dir . '/HTMLPurifier/AttrDef/Text.php';
require_once $__dir . '/HTMLPurifier/AttrDef/URI.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Number.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/AlphaValue.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Background.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/BackgroundPosition.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Border.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Color.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Composite.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/DenyElementDecorator.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Filter.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Font.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/FontFamily.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/ImportantDecorator.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Length.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/ListStyle.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Multiple.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/Percentage.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/TextDecoration.php';
require_once $__dir . '/HTMLPurifier/AttrDef/CSS/URI.php';
require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Bool.php';
require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Nmtokens.php';
require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Class.php';
require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Color.php';
require_once $__dir . '/HTMLPurifier/AttrDef/HTML/FrameTarget.php';
require_once $__dir . '/HTMLPurifier/AttrDef/HTML/ID.php';
require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Pixels.php';
require_once $__dir . '/HTMLPurifier/AttrDef/HTML/Length.php';
require_once $__dir . '/HTMLPurifier/AttrDef/HTML/LinkTypes.php';
require_once $__dir . '/HTMLPurifier/AttrDef/HTML/MultiLength.php';
require_once $__dir . '/HTMLPurifier/AttrDef/URI/Email.php';
require_once $__dir . '/HTMLPurifier/AttrDef/URI/Host.php';
require_once $__dir . '/HTMLPurifier/AttrDef/URI/IPv4.php';
require_once $__dir . '/HTMLPurifier/AttrDef/URI/IPv6.php';
require_once $__dir . '/HTMLPurifier/AttrDef/URI/Email/SimpleCheck.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/Background.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/BdoDir.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/BgColor.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/BoolToCSS.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/Border.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/EnumToCSS.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/ImgRequired.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/ImgSpace.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/Input.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/Lang.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/Length.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/Name.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/NameSync.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/SafeEmbed.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/SafeObject.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/SafeParam.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/ScriptRequired.php';
require_once $__dir . '/HTMLPurifier/AttrTransform/Textarea.php';
require_once $__dir . '/HTMLPurifier/ChildDef/Chameleon.php';
require_once $__dir . '/HTMLPurifier/ChildDef/Custom.php';
require_once $__dir . '/HTMLPurifier/ChildDef/Empty.php';
require_once $__dir . '/HTMLPurifier/ChildDef/Required.php';
require_once $__dir . '/HTMLPurifier/ChildDef/Optional.php';
require_once $__dir . '/HTMLPurifier/ChildDef/StrictBlockquote.php';
require_once $__dir . '/HTMLPurifier/ChildDef/Table.php';
require_once $__dir . '/HTMLPurifier/DefinitionCache/Decorator.php';
require_once $__dir . '/HTMLPurifier/DefinitionCache/Null.php';
require_once $__dir . '/HTMLPurifier/DefinitionCache/Serializer.php';
require_once $__dir . '/HTMLPurifier/DefinitionCache/Decorator/Cleanup.php';
require_once $__dir . '/HTMLPurifier/DefinitionCache/Decorator/Memory.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Bdo.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/CommonAttributes.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Edit.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Forms.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Hypertext.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Image.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Legacy.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/List.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Name.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/NonXMLCommonAttributes.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Object.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Presentation.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Proprietary.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Ruby.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/SafeEmbed.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/SafeObject.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Scripting.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/StyleAttribute.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Tables.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Target.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Text.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/XMLCommonAttributes.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/Name.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/Proprietary.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/XHTMLAndHTML4.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/Strict.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/Transitional.php';
require_once $__dir . '/HTMLPurifier/HTMLModule/Tidy/XHTML.php';
require_once $__dir . '/HTMLPurifier/Injector/AutoParagraph.php';
require_once $__dir . '/HTMLPurifier/Injector/DisplayLinkURI.php';
require_once $__dir . '/HTMLPurifier/Injector/Linkify.php';
require_once $__dir . '/HTMLPurifier/Injector/PurifierLinkify.php';
require_once $__dir . '/HTMLPurifier/Injector/RemoveEmpty.php';
require_once $__dir . '/HTMLPurifier/Injector/RemoveSpansWithoutAttributes.php';
require_once $__dir . '/HTMLPurifier/Injector/SafeObject.php';
require_once $__dir . '/HTMLPurifier/Lexer/DOMLex.php';
require_once $__dir . '/HTMLPurifier/Lexer/DirectLex.php';
require_once $__dir . '/HTMLPurifier/Strategy/Composite.php';
require_once $__dir . '/HTMLPurifier/Strategy/Core.php';
require_once $__dir . '/HTMLPurifier/Strategy/FixNesting.php';
require_once $__dir . '/HTMLPurifier/Strategy/MakeWellFormed.php';
require_once $__dir . '/HTMLPurifier/Strategy/RemoveForeignElements.php';
require_once $__dir . '/HTMLPurifier/Strategy/ValidateAttributes.php';
require_once $__dir . '/HTMLPurifier/TagTransform/Font.php';
require_once $__dir . '/HTMLPurifier/TagTransform/Simple.php';
require_once $__dir . '/HTMLPurifier/Token/Comment.php';
require_once $__dir . '/HTMLPurifier/Token/Tag.php';
require_once $__dir . '/HTMLPurifier/Token/Empty.php';
require_once $__dir . '/HTMLPurifier/Token/End.php';
require_once $__dir . '/HTMLPurifier/Token/Start.php';
require_once $__dir . '/HTMLPurifier/Token/Text.php';
require_once $__dir . '/HTMLPurifier/URIFilter/DisableExternal.php';
require_once $__dir . '/HTMLPurifier/URIFilter/DisableExternalResources.php';
require_once $__dir . '/HTMLPurifier/URIFilter/HostBlacklist.php';
require_once $__dir . '/HTMLPurifier/URIFilter/MakeAbsolute.php';
require_once $__dir . '/HTMLPurifier/URIFilter/Munge.php';
require_once $__dir . '/HTMLPurifier/URIScheme/data.php';
require_once $__dir . '/HTMLPurifier/URIScheme/ftp.php';
require_once $__dir . '/HTMLPurifier/URIScheme/http.php';
require_once $__dir . '/HTMLPurifier/URIScheme/https.php';
require_once $__dir . '/HTMLPurifier/URIScheme/mailto.php';
require_once $__dir . '/HTMLPurifier/URIScheme/news.php';
require_once $__dir . '/HTMLPurifier/URIScheme/nntp.php';
require_once $__dir . '/HTMLPurifier/VarParser/Flexible.php';
require_once $__dir . '/HTMLPurifier/VarParser/Native.php';

View File

@@ -1,17 +1,19 @@
<?php
require_once 'HTMLPurifier/AttrTypes.php';
/**
* Defines common attribute collections that modules reference
*/
class HTMLPurifier_AttrCollections
{
/**
* Associative array of attribute collections, indexed by name
*/
public $info = array();
var $info = array();
/**
* Performs all expansions on internal data for use by other inclusions
* It also collects all attribute collection extensions from
@@ -19,7 +21,7 @@ class HTMLPurifier_AttrCollections
* @param $attr_types HTMLPurifier_AttrTypes instance
* @param $modules Hash array of HTMLPurifier_HTMLModule members
*/
public function __construct($attr_types, $modules) {
function HTMLPurifier_AttrCollections($attr_types, $modules) {
// load extensions from the modules
foreach ($modules as $module) {
foreach ($module->attr_collections as $coll_i => $coll) {
@@ -45,13 +47,13 @@ class HTMLPurifier_AttrCollections
$this->expandIdentifiers($this->info[$name], $attr_types);
}
}
/**
* Takes a reference to an attribute associative array and performs
* all inclusions specified by the zero index.
* @param &$attr Reference to attribute array
*/
public function performInclusions(&$attr) {
function performInclusions(&$attr) {
if (!isset($attr[0])) return;
$merge = $attr[0];
$seen = array(); // recursion guard
@@ -72,25 +74,25 @@ class HTMLPurifier_AttrCollections
}
unset($attr[0]);
}
/**
* Expands all string identifiers in an attribute array by replacing
* them with the appropriate values inside HTMLPurifier_AttrTypes
* @param &$attr Reference to attribute array
* @param $attr_types HTMLPurifier_AttrTypes instance
*/
public function expandIdentifiers(&$attr, $attr_types) {
function expandIdentifiers(&$attr, $attr_types) {
// because foreach will process new elements we add, make sure we
// skip duplicates
$processed = array();
foreach ($attr as $def_i => $def) {
// skip inclusions
if ($def_i === 0) continue;
if (isset($processed[$def_i])) continue;
// determine whether or not attribute is required
if ($required = (strpos($def_i, '*') !== false)) {
// rename the definition
@@ -98,21 +100,21 @@ class HTMLPurifier_AttrCollections
$def_i = trim($def_i, '*');
$attr[$def_i] = $def;
}
$processed[$def_i] = true;
// if we've already got a literal object, move on
if (is_object($def)) {
// preserve previous required
$attr[$def_i]->required = ($required || $attr[$def_i]->required);
continue;
}
if ($def === false) {
unset($attr[$def_i]);
continue;
}
if ($t = $attr_types->get($def)) {
$attr[$def_i] = $t;
$attr[$def_i]->required = $required;
@@ -120,9 +122,8 @@ class HTMLPurifier_AttrCollections
unset($attr[$def_i]);
}
}
}
}
// vim: et sw=4 sts=4

View File

@@ -2,86 +2,85 @@
/**
* Base class for all validating attribute definitions.
*
*
* This family of classes forms the core for not only HTML attribute validation,
* but also any sort of string that needs to be validated or cleaned (which
* means CSS properties and composite definitions are defined here too).
* means CSS properties and composite definitions are defined here too).
* Besides defining (through code) what precisely makes the string valid,
* subclasses are also responsible for cleaning the code if possible.
*/
abstract class HTMLPurifier_AttrDef
class HTMLPurifier_AttrDef
{
/**
* Tells us whether or not an HTML attribute is minimized. Has no
* meaning in other contexts.
*/
public $minimized = false;
var $minimized = false;
/**
* Tells us whether or not an HTML attribute is required. Has no
* meaning in other contexts
*/
public $required = false;
var $required = false;
/**
* Validates and cleans passed string according to a definition.
*
*
* @public
* @param $string String to be validated and cleaned.
* @param $config Mandatory HTMLPurifier_Config object.
* @param $context Mandatory HTMLPurifier_AttrContext object.
*/
abstract public function validate($string, $config, $context);
function validate($string, $config, &$context) {
trigger_error('Cannot call abstract function', E_USER_ERROR);
}
/**
* Convenience method that parses a string as if it were CDATA.
*
*
* This method process a string in the manner specified at
* <http://www.w3.org/TR/html4/types.html#h-6.2> by removing
* leading and trailing whitespace, ignoring line feeds, and replacing
* carriage returns and tabs with spaces. While most useful for HTML
* attributes specified as CDATA, it can also be applied to most CSS
* values.
*
*
* @note This method is not entirely standards compliant, as trim() removes
* more types of whitespace than specified in the spec. In practice,
* this is rarely a problem, as those extra characters usually have
* already been removed by HTMLPurifier_Encoder.
*
*
* @warning This processing is inconsistent with XML's whitespace handling
* as specified by section 3.3.3 and referenced XHTML 1.0 section
* 4.7. However, note that we are NOT necessarily
* parsing XML, thus, this behavior may still be correct. We
* assume that newlines have been normalized.
* 4.7. Compliant processing requires all line breaks normalized
* to "\n", so the fix is not as simple as fixing it in this
* function. Trim and whitespace collapsing are supposed to only
* occur in NMTOKENs. However, note that we are NOT necessarily
* parsing XML, thus, this behavior may still be correct.
*
* @public
*/
public function parseCDATA($string) {
function parseCDATA($string) {
$string = trim($string);
$string = str_replace(array("\n", "\t", "\r"), ' ', $string);
$string = str_replace("\n", '', $string);
$string = str_replace(array("\r", "\t"), ' ', $string);
return $string;
}
/**
* Factory method for creating this class from a string.
* @param $string String construction info
* @return Created AttrDef object corresponding to $string
* @public
*/
public function make($string) {
// default implementation, return a flyweight of this object.
// If $string has an effect on the returned object (i.e. you
// need to overload this method), it is best
// to clone or instantiate new copies. (Instantiation is safer.)
function make($string) {
// default implementation, return flyweight of this object
// if overloaded, it is *necessary* for you to clone the
// object (usually by instantiating a new copy) and return that
return $this;
}
/**
* Removes spaces from rgb(0, 0, 0) so that shorthand CSS properties work
* properly. THIS IS A HACK!
*/
protected function mungeRgb($string) {
return preg_replace('/rgb\((\d+)\s*,\s*(\d+)\s*,\s*(\d+)\)/', 'rgb(\1,\2,\3)', $string);
}
}
// vim: et sw=4 sts=4

View File

@@ -1,5 +1,8 @@
<?php
require_once 'HTMLPurifier/AttrDef.php';
require_once 'HTMLPurifier/CSSDefinition.php';
/**
* Validates the HTML attribute style, otherwise known as CSS.
* @note We don't implement the whole CSS specification, so it might be
@@ -13,48 +16,29 @@
*/
class HTMLPurifier_AttrDef_CSS extends HTMLPurifier_AttrDef
{
public function validate($css, $config, $context) {
function validate($css, $config, &$context) {
$css = $this->parseCDATA($css);
$definition = $config->getCSSDefinition();
// we're going to break the spec and explode by semicolons.
// This is because semicolon rarely appears in escaped form
// Doing this is generally flaky but fast
// IT MIGHT APPEAR IN URIs, see HTMLPurifier_AttrDef_CSSURI
// for details
$declarations = explode(';', $css);
$propvalues = array();
/**
* Name of the current CSS property being validated.
*/
$property = false;
$context->register('CurrentCSSProperty', $property);
foreach ($declarations as $declaration) {
if (!$declaration) continue;
if (!strpos($declaration, ':')) continue;
list($property, $value) = explode(':', $declaration, 2);
$property = trim($property);
$value = trim($value);
$ok = false;
do {
if (isset($definition->info[$property])) {
$ok = true;
break;
}
if (ctype_lower($property)) break;
$property = strtolower($property);
if (isset($definition->info[$property])) {
$ok = true;
break;
}
} while(0);
if (!$ok) continue;
if (!isset($definition->info[$property])) continue;
// inefficient call, since the validator will do this again
if (strtolower(trim($value)) !== 'inherit') {
// inherit works for everything (but only on the base property)
@@ -66,22 +50,19 @@ class HTMLPurifier_AttrDef_CSS extends HTMLPurifier_AttrDef
if ($result === false) continue;
$propvalues[$property] = $result;
}
$context->destroy('CurrentCSSProperty');
// procedure does not write the new CSS simultaneously, so it's
// slightly inefficient, but it's the only way of getting rid of
// duplicates. Perhaps config to optimize it, but not now.
$new_declarations = '';
foreach ($propvalues as $prop => $value) {
$new_declarations .= "$prop:$value;";
}
return $new_declarations ? $new_declarations : false;
}
}
// vim: et sw=4 sts=4

View File

@@ -1,21 +0,0 @@
<?php
class HTMLPurifier_AttrDef_CSS_AlphaValue extends HTMLPurifier_AttrDef_CSS_Number
{
public function __construct() {
parent::__construct(false); // opacity is non-negative, but we will clamp it
}
public function validate($number, $config, $context) {
$result = parent::validate($number, $config, $context);
if ($result === false) return $result;
$float = (float) $result;
if ($float < 0.0) $result = '0';
if ($float > 1.0) $result = '1';
return $result;
}
}
// vim: et sw=4 sts=4

View File

@@ -1,19 +1,22 @@
<?php
require_once 'HTMLPurifier/AttrDef.php';
require_once 'HTMLPurifier/CSSDefinition.php';
/**
* Validates shorthand CSS property background.
* @warning Does not support url tokens that have internal spaces.
*/
class HTMLPurifier_AttrDef_CSS_Background extends HTMLPurifier_AttrDef
{
/**
* Local copy of component validators.
* @note See HTMLPurifier_AttrDef_Font::$info for a similar impl.
*/
protected $info;
public function __construct($config) {
var $info;
function HTMLPurifier_AttrDef_CSS_Background($config) {
$def = $config->getCSSDefinition();
$this->info['background-color'] = $def->info['background-color'];
$this->info['background-image'] = $def->info['background-image'];
@@ -21,29 +24,26 @@ class HTMLPurifier_AttrDef_CSS_Background extends HTMLPurifier_AttrDef
$this->info['background-attachment'] = $def->info['background-attachment'];
$this->info['background-position'] = $def->info['background-position'];
}
public function validate($string, $config, $context) {
function validate($string, $config, &$context) {
// regular pre-processing
$string = $this->parseCDATA($string);
if ($string === '') return false;
// munge rgb() decl if necessary
$string = $this->mungeRgb($string);
// assumes URI doesn't have spaces in it
$bits = explode(' ', strtolower($string)); // bits to process
$caught = array();
$caught['color'] = false;
$caught['image'] = false;
$caught['repeat'] = false;
$caught['attachment'] = false;
$caught['position'] = false;
$i = 0; // number of catches
$none = false;
foreach ($bits as $bit) {
if ($bit === '') continue;
foreach ($caught as $key => $status) {
@@ -64,24 +64,23 @@ class HTMLPurifier_AttrDef_CSS_Background extends HTMLPurifier_AttrDef
break;
}
}
if (!$i) return false;
if ($caught['position'] !== false) {
$caught['position'] = $this->info['background-position']->
validate($caught['position'], $config, $context);
}
$ret = array();
foreach ($caught as $value) {
if ($value === false) continue;
$ret[] = $value;
}
if (empty($ret)) return false;
return implode(' ', $ret);
}
}
// vim: et sw=4 sts=4

View File

@@ -1,5 +1,9 @@
<?php
require_once 'HTMLPurifier/AttrDef.php';
require_once 'HTMLPurifier/AttrDef/CSS/Length.php';
require_once 'HTMLPurifier/AttrDef/CSS/Percentage.php';
/* W3C says:
[ // adjective and number must be in correct order, even if
// you could switch them without introducing ambiguity.
@@ -7,7 +11,7 @@
[
<percentage> | <length> | left | center | right
]
[
[
<percentage> | <length> | top | center | bottom
]?
] |
@@ -28,10 +32,10 @@
/* QuirksMode says:
keyword + length/percentage must be ordered correctly, as per W3C
Internet Explorer and Opera, however, support arbitrary ordering. We
should fix it up.
Minor issue though, not strictly necessary.
*/
@@ -43,27 +47,27 @@
*/
class HTMLPurifier_AttrDef_CSS_BackgroundPosition extends HTMLPurifier_AttrDef
{
protected $length;
protected $percentage;
public function __construct() {
var $length;
var $percentage;
function HTMLPurifier_AttrDef_CSS_BackgroundPosition() {
$this->length = new HTMLPurifier_AttrDef_CSS_Length();
$this->percentage = new HTMLPurifier_AttrDef_CSS_Percentage();
}
public function validate($string, $config, $context) {
function validate($string, $config, &$context) {
$string = $this->parseCDATA($string);
$bits = explode(' ', $string);
$keywords = array();
$keywords['h'] = false; // left, right
$keywords['v'] = false; // top, bottom
$keywords['c'] = false; // center
$measures = array();
$i = 0;
$lookup = array(
'top' => 'v',
'bottom' => 'v',
@@ -71,10 +75,10 @@ class HTMLPurifier_AttrDef_CSS_BackgroundPosition extends HTMLPurifier_AttrDef
'right' => 'h',
'center' => 'c'
);
foreach ($bits as $bit) {
if ($bit === '') continue;
// test for keyword
$lbit = ctype_lower($bit) ? $bit : strtolower($bit);
if (isset($lookup[$lbit])) {
@@ -82,28 +86,28 @@ class HTMLPurifier_AttrDef_CSS_BackgroundPosition extends HTMLPurifier_AttrDef
$keywords[$status] = $lbit;
$i++;
}
// test for length
$r = $this->length->validate($bit, $config, $context);
if ($r !== false) {
$measures[] = $r;
$i++;
}
// test for percentage
$r = $this->percentage->validate($bit, $config, $context);
if ($r !== false) {
$measures[] = $r;
$i++;
}
}
if (!$i) return false; // no valid values were caught
$ret = array();
// first keyword
if ($keywords['h']) $ret[] = $keywords['h'];
elseif (count($measures)) $ret[] = array_shift($measures);
@@ -111,16 +115,15 @@ class HTMLPurifier_AttrDef_CSS_BackgroundPosition extends HTMLPurifier_AttrDef
$ret[] = $keywords['c'];
$keywords['c'] = false; // prevent re-use: center = center center
}
if ($keywords['v']) $ret[] = $keywords['v'];
elseif (count($measures)) $ret[] = array_shift($measures);
elseif ($keywords['c']) $ret[] = $keywords['c'];
if (empty($ret)) return false;
return implode(' ', $ret);
}
}
// vim: et sw=4 sts=4

View File

@@ -1,26 +1,28 @@
<?php
require_once 'HTMLPurifier/AttrDef.php';
/**
* Validates the border property as defined by CSS.
*/
class HTMLPurifier_AttrDef_CSS_Border extends HTMLPurifier_AttrDef
{
/**
* Local copy of properties this property is shorthand for.
*/
protected $info = array();
public function __construct($config) {
var $info = array();
function HTMLPurifier_AttrDef_CSS_Border($config) {
$def = $config->getCSSDefinition();
$this->info['border-width'] = $def->info['border-width'];
$this->info['border-style'] = $def->info['border-style'];
$this->info['border-top-color'] = $def->info['border-top-color'];
}
public function validate($string, $config, $context) {
function validate($string, $config, &$context) {
$string = $this->parseCDATA($string);
$string = $this->mungeRgb($string);
// we specifically will not support rgb() syntax with spaces
$bits = explode(' ', $string);
$done = array(); // segments we've finished
$ret = ''; // return value
@@ -37,7 +39,6 @@ class HTMLPurifier_AttrDef_CSS_Border extends HTMLPurifier_AttrDef
}
return rtrim($ret);
}
}
// vim: et sw=4 sts=4

View File

@@ -1,24 +1,58 @@
<?php
require_once 'HTMLPurifier/AttrDef.php';
HTMLPurifier_ConfigSchema::define(
'Core', 'ColorKeywords', array(
'maroon' => '#800000',
'red' => '#FF0000',
'orange' => '#FFA500',
'yellow' => '#FFFF00',
'olive' => '#808000',
'purple' => '#800080',
'fuchsia' => '#FF00FF',
'white' => '#FFFFFF',
'lime' => '#00FF00',
'green' => '#008000',
'navy' => '#000080',
'blue' => '#0000FF',
'aqua' => '#00FFFF',
'teal' => '#008080',
'black' => '#000000',
'silver' => '#C0C0C0',
'gray' => '#808080'
), 'hash', '
Lookup array of color names to six digit hexadecimal number corresponding
to color, with preceding hash mark. Used when parsing colors.
This directive has been available since 2.0.0.
');
/**
* Validates Color as defined by CSS.
*/
class HTMLPurifier_AttrDef_CSS_Color extends HTMLPurifier_AttrDef
{
public function validate($color, $config, $context) {
function validate($color, $config, &$context) {
static $colors = null;
if ($colors === null) $colors = $config->get('Core.ColorKeywords');
if ($colors === null) $colors = $config->get('Core', 'ColorKeywords');
$color = trim($color);
if ($color === '') return false;
if (!$color) return false;
$lower = strtolower($color);
if (isset($colors[$lower])) return $colors[$lower];
if (strpos($color, 'rgb(') !== false) {
if ($color[0] === '#') {
// hexadecimal handling
$hex = substr($color, 1);
$length = strlen($hex);
if ($length !== 3 && $length !== 6) return false;
if (!ctype_xdigit($hex)) return false;
} else {
// rgb literal handling
if (strpos($color, 'rgb(')) return false;
$length = strlen($color);
if (strpos($color, ')') !== $length - 1) return false;
$triad = substr($color, 4, $length - 4 - 1);
@@ -56,23 +90,11 @@ class HTMLPurifier_AttrDef_CSS_Color extends HTMLPurifier_AttrDef
}
$new_triad = implode(',', $new_parts);
$color = "rgb($new_triad)";
} else {
// hexadecimal handling
if ($color[0] === '#') {
$hex = substr($color, 1);
} else {
$hex = $color;
$color = '#' . $color;
}
$length = strlen($hex);
if ($length !== 3 && $length !== 6) return false;
if (!ctype_xdigit($hex)) return false;
}
return $color;
}
}
// vim: et sw=4 sts=4

View File

@@ -2,7 +2,7 @@
/**
* Allows multiple validators to attempt to validate attribute.
*
*
* Composite is just what it sounds like: a composite of many validators.
* This means that multiple HTMLPurifier_AttrDef objects will have a whack
* at the string. If one of them passes, that's what is returned. This is
@@ -11,28 +11,27 @@
*/
class HTMLPurifier_AttrDef_CSS_Composite extends HTMLPurifier_AttrDef
{
/**
* List of HTMLPurifier_AttrDef objects that may process strings
* @todo Make protected
* @protected
*/
public $defs;
var $defs;
/**
* @param $defs List of HTMLPurifier_AttrDef objects
*/
public function __construct($defs) {
function HTMLPurifier_AttrDef_CSS_Composite($defs) {
$this->defs = $defs;
}
public function validate($string, $config, $context) {
function validate($string, $config, &$context) {
foreach ($this->defs as $i => $def) {
$result = $this->defs[$i]->validate($string, $config, $context);
if ($result !== false) return $result;
}
return false;
}
}
// vim: et sw=4 sts=4

View File

@@ -1,28 +0,0 @@
<?php
/**
* Decorator which enables CSS properties to be disabled for specific elements.
*/
class HTMLPurifier_AttrDef_CSS_DenyElementDecorator extends HTMLPurifier_AttrDef
{
public $def, $element;
/**
* @param $def Definition to wrap
* @param $element Element to deny
*/
public function __construct($def, $element) {
$this->def = $def;
$this->element = $element;
}
/**
* Checks if CurrentToken is set and equal to $this->element
*/
public function validate($string, $config, $context) {
$token = $context->get('CurrentToken', true);
if ($token && $token->name == $this->element) return false;
return $this->def->validate($string, $config, $context);
}
}
// vim: et sw=4 sts=4

View File

@@ -1,54 +0,0 @@
<?php
/**
* Microsoft's proprietary filter: CSS property
* @note Currently supports the alpha filter. In the future, this will
* probably need an extensible framework
*/
class HTMLPurifier_AttrDef_CSS_Filter extends HTMLPurifier_AttrDef
{
protected $intValidator;
public function __construct() {
$this->intValidator = new HTMLPurifier_AttrDef_Integer();
}
public function validate($value, $config, $context) {
$value = $this->parseCDATA($value);
if ($value === 'none') return $value;
// if we looped this we could support multiple filters
$function_length = strcspn($value, '(');
$function = trim(substr($value, 0, $function_length));
if ($function !== 'alpha' &&
$function !== 'Alpha' &&
$function !== 'progid:DXImageTransform.Microsoft.Alpha'
) return false;
$cursor = $function_length + 1;
$parameters_length = strcspn($value, ')', $cursor);
$parameters = substr($value, $cursor, $parameters_length);
$params = explode(',', $parameters);
$ret_params = array();
$lookup = array();
foreach ($params as $param) {
list($key, $value) = explode('=', $param);
$key = trim($key);
$value = trim($value);
if (isset($lookup[$key])) continue;
if ($key !== 'opacity') continue;
$value = $this->intValidator->validate($value, $config, $context);
if ($value === false) continue;
$int = (int) $value;
if ($int > 100) $value = '100';
if ($int < 0) $value = '0';
$ret_params[] = "$key=$value";
$lookup[$key] = true;
}
$ret_parameters = implode(',', $ret_params);
$ret_function = "$function($ret_parameters)";
return $ret_function;
}
}
// vim: et sw=4 sts=4

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