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[1.6.1] Implement generic EnumToCSS attribute transformation, migrate text alignment to it

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git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1017 48356398-32a2-884e-a903-53898d9a118a
This commit is contained in:
Edward Z. Yang
2007-05-05 15:48:41 +00:00
parent 0426985c81
commit fd35c43643
7 changed files with 121 additions and 58 deletions
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60
library/HTMLPurifier/AttrTransform/EnumToCSS.php Normal file
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@@ -0,0 +1,60 @@
<?php
require_once 'HTMLPurifier/AttrTransform.php';
/**
* Generic pre-transform that converts an attribute with a fixed number of
* values (enumerated) to CSS.
*/
class HTMLPurifier_AttrTransform_EnumToCSS extends HTMLPurifier_AttrTransform {
/**
* Name of attribute to transform from
*/
var $attr;
/**
* Lookup array of attribute values to CSS
*/
var $enumToCSS = array();
/**
* Case sensitivity of the matching
* @warning Currently can only be guaranteed to work with ASCII
* values.
*/
var $caseSensitive = false;
/**
* @param $attr String attribute name to transform from
* @param $enumToCSS Lookup array of attribute values to CSS
* @param $case_sensitive Boolean case sensitivity indicator, default false
*/
function HTMLPurifier_AttrTransform_EnumToCSS($attr, $enum_to_css, $case_sensitive = false) {
$this->attr = $attr;
$this->enumToCSS = $enum_to_css;
$this->caseSensitive = (bool) $case_sensitive;
}
function transform($attr, $config, &$context) {
if (!isset($attr[$this->attr])) return $attr;
$value = trim($attr[$this->attr]);
unset($attr[$this->attr]);
if (!$this->caseSensitive) $value = strtolower($value);
if (!isset($this->enumToCSS[$value])) {
return $attr;
}
$this->prependCSS($attr, $this->enumToCSS[$value]);
return $attr;
}
}
?>

35
library/HTMLPurifier/AttrTransform/TextAlign.php
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@@ -1,35 +0,0 @@
<?php
require_once 'HTMLPurifier/AttrTransform.php';
/**
* Pre-transform that changes deprecated align attribute to text-align.
*/
class HTMLPurifier_AttrTransform_TextAlign
extends HTMLPurifier_AttrTransform {
function transform($attr, $config, &$context) {
if (!isset($attr['align'])) return $attr;
$align = $this->confiscateAttr($attr, 'align');
$align = strtolower(trim($align));
$values = array('left' => 1,
'right' => 1,
'center' => 1,
'justify' => 1);
if (!isset($values[$align])) {
return $attr;
}
$this->prependCSS($attr, "text-align:$align;");
return $attr;
}
}
?>

9
library/HTMLPurifier/HTMLModule/TransformToStrict.php
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@@ -7,13 +7,13 @@ require_once 'HTMLPurifier/TagTransform/Center.php';
require_once 'HTMLPurifier/TagTransform/Font.php';
require_once 'HTMLPurifier/AttrTransform/Lang.php';
require_once 'HTMLPurifier/AttrTransform/TextAlign.php';
require_once 'HTMLPurifier/AttrTransform/BgColor.php';
require_once 'HTMLPurifier/AttrTransform/BoolToCSS.php';
require_once 'HTMLPurifier/AttrTransform/Border.php';
require_once 'HTMLPurifier/AttrTransform/Name.php';
require_once 'HTMLPurifier/AttrTransform/Length.php';
require_once 'HTMLPurifier/AttrTransform/ImgSpace.php';
require_once 'HTMLPurifier/AttrTransform/EnumToCSS.php';
/**
* Proprietary module that transforms deprecated elements into Strict
@@ -61,6 +61,11 @@ class HTMLPurifier_HTMLModule_TransformToStrict extends HTMLPurifier_HTMLModule
}
// deprecated attribute transforms
// align battery
$align_lookup = array();
$align_values = array('left', 'right', 'center', 'justify');
foreach ($align_values as $v) $align_lookup[$v] = "text-align:$v;";
$this->info['h1']->attr_transform_pre['align'] =
$this->info['h2']->attr_transform_pre['align'] =
$this->info['h3']->attr_transform_pre['align'] =
@@ -68,7 +73,7 @@ class HTMLPurifier_HTMLModule_TransformToStrict extends HTMLPurifier_HTMLModule
$this->info['h5']->attr_transform_pre['align'] =
$this->info['h6']->attr_transform_pre['align'] =
$this->info['p'] ->attr_transform_pre['align'] =
new HTMLPurifier_AttrTransform_TextAlign();
new HTMLPurifier_AttrTransform_EnumToCSS('align', $align_lookup);
// xml:lang <=> lang mirroring, implement in TransformToStrict,
// this is overridden in TransformToXHTML11