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https://github.com/ezyang/htmlpurifier.git
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d48f9b6b21
- Update TODO . Add another possible plaintext formatter . Reference config-ideas.txt for URI options - Update code-quality.txt, removing issues that have been addressed and updating time for post-beta - Update config-ideas.txt . Added more possible URI directives . Removed silly language control directive - Improved documentation on Class, CSS and Host git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@524 48356398-32a2-884e-a903-53898d9a118a
47 lines
1.4 KiB
PHP
47 lines
1.4 KiB
PHP
<?php
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require_once 'HTMLPurifier/AttrDef.php';
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require_once 'HTMLPurifier/Config.php';
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/**
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* Validates the contents of the global HTML attribute class.
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*/
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class HTMLPurifier_AttrDef_Class extends HTMLPurifier_AttrDef
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{
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function validate($string, $config, &$context) {
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$string = trim($string);
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// early abort: '' and '0' (strings that convert to false) are invalid
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if (!$string) return false;
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// OPTIMIZABLE!
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// do the preg_match, capture all subpatterns for reformulation
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// we don't support U+00A1 and up codepoints or
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// escaping because I don't know how to do that with regexps
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// and plus it would complicate optimization efforts (you never
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// see that anyway).
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$matches = array();
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$pattern = '/(?:(?<=\s)|\A)'. // look behind for space or string start
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'((?:--|-?[A-Za-z_])[A-Za-z_\-0-9]*)'.
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'(?:(?=\s)|\z)/'; // look ahead for space or string end
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preg_match_all($pattern, $string, $matches);
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if (empty($matches[1])) return false;
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// reconstruct class string
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$new_string = '';
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foreach ($matches[1] as $class_names) {
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$new_string .= $class_names . ' ';
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}
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$new_string = rtrim($new_string);
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return $new_string;
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}
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}
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?>
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