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Implement the color AttrDef.

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git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@230 48356398-32a2-884e-a903-53898d9a118a
This commit is contained in:
Edward Z. Yang
2006-08-13 21:23:57 +00:00
parent 415b7d3913
commit 4ffb2da238
8 changed files with 133 additions and 8 deletions
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67
library/HTMLPurifier/AttrDef/Color.php Normal file
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@@ -0,0 +1,67 @@
<?php
require_once 'HTMLPurifier/AttrDef.php';
class HTMLPurifier_AttrDef_Color
{
function validate($color, $config, &$context) {
$color = trim($color);
if (!$color) return false;
if ($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);
$parts = explode(',', $triad);
if (count($parts) !== 3) return false;
$type = false; // to ensure that they're all the same type
$new_parts = array();
foreach ($parts as $part) {
$part = trim($part);
if ($part === '') return false;
$length = strlen($part);
if ($part[$length - 1] === '%') {
// handle percents
if (!$type) {
$type = 'percentage';
} elseif ($type !== 'percentage') {
return false;
}
$num = (float) substr($part, 0, $length - 1);
if ($num < 0) $num = 0;
if ($num > 100) $num = 100;
$new_parts[] = "$num%";
} else {
// handle integers
if (!$type) {
$type = 'integer';
} elseif ($type !== 'integer') {
return false;
}
$num = (int) $part;
if ($num < 0) $num = 0;
if ($num > 255) $num = 255;
$new_parts[] = (string) $num;
}
}
$new_triad = implode(',', $new_parts);
$color = "rgb($new_triad)";
}
return $color;
}
}
?>

4
library/HTMLPurifier/AttrDef/Composite.php
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@@ -5,8 +5,8 @@ class HTMLPurifier_AttrDef_Composite extends HTMLPurifier_AttrDef
var $defs;
function HTMLPurifier_AttrDef_Composite(&$defs) {
$this->defs =& $defs;
function HTMLPurifier_AttrDef_Composite($defs) {
$this->defs = $defs;
}
function validate($string, $config, &$context) {

10
library/HTMLPurifier/CSSDefinition.php
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@@ -43,6 +43,16 @@ class HTMLPurifier_CSSDefinition
'upper-roman', 'lower-alpha', 'upper-alpha'), false);
$this->info['text-transform'] = new HTMLPurifier_AttrDef_Enum(
array('capitalize', 'uppercase', 'lowercase', 'none'), false);
$this->info['color'] = new HTMLPurifier_AttrDef_Color();
$this->info['border-top-color'] =
$this->info['border-bottom-color'] =
$this->info['border-left-color'] =
$this->info['border-right-color'] =
$this->info['background-color'] = new HTMLPurifier_AttrDef_Composite( array(
new HTMLPurifier_AttrDef_Enum(array('transparent')),
new HTMLPurifier_AttrDef_Color()
));
// this could use specialized code
$this->info['font-weight'] = new HTMLPurifier_AttrDef_Enum(