Proyectos de Subversion Moodle

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<?php
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/**
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 * Validates shorthand CSS property list-style.
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 * @warning Does not support url tokens that have internal spaces.
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 */
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class HTMLPurifier_AttrDef_CSS_ListStyle extends HTMLPurifier_AttrDef
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{
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    /**
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     * Local copy of validators.
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     * @type HTMLPurifier_AttrDef[]
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     * @note See HTMLPurifier_AttrDef_CSS_Font::$info for a similar impl.
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     */
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    protected $info;
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    /**
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     * @param HTMLPurifier_Config $config
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     */
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    public function __construct($config)
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    {
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        $def = $config->getCSSDefinition();
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        $this->info['list-style-type'] = $def->info['list-style-type'];
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        $this->info['list-style-position'] = $def->info['list-style-position'];
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        $this->info['list-style-image'] = $def->info['list-style-image'];
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    }
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    /**
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     * @param string $string
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     * @param HTMLPurifier_Config $config
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     * @param HTMLPurifier_Context $context
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     * @return bool|string
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     */
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    public function validate($string, $config, $context)
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    {
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        // regular pre-processing
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        $string = $this->parseCDATA($string);
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        if ($string === '') {
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            return false;
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        }
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        // assumes URI doesn't have spaces in it
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        $bits = explode(' ', strtolower($string)); // bits to process
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        $caught = array();
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        $caught['type'] = false;
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        $caught['position'] = false;
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        $caught['image'] = false;
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        $i = 0; // number of catches
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        $none = false;
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        foreach ($bits as $bit) {
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            if ($i >= 3) {
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                return;
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            } // optimization bit
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            if ($bit === '') {
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                continue;
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            }
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            foreach ($caught as $key => $status) {
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                if ($status !== false) {
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                    continue;
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                }
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                $r = $this->info['list-style-' . $key]->validate($bit, $config, $context);
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                if ($r === false) {
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                    continue;
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                }
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                if ($r === 'none') {
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                    if ($none) {
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                        continue;
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                    } else {
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                        $none = true;
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                    }
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                    if ($key == 'image') {
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                        continue;
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                    }
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                }
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                $caught[$key] = $r;
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                $i++;
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                break;
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            }
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        }
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        if (!$i) {
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            return false;
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        }
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        $ret = array();
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        // construct type
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        if ($caught['type']) {
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            $ret[] = $caught['type'];
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        }
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        // construct image
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        if ($caught['image']) {
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            $ret[] = $caught['image'];
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        }
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        // construct position
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        if ($caught['position']) {
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            $ret[] = $caught['position'];
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        }
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        if (empty($ret)) {
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            return false;
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        }
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        return implode(' ', $ret);
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    }
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}
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// vim: et sw=4 sts=4