Proyectos de Subversion Moodle

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1 efrain 1 
<?php
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/**
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 * Validates an integer representation of pixels according to the HTML spec.
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 */
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class HTMLPurifier_AttrDef_HTML_Pixels extends HTMLPurifier_AttrDef
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{
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    /**
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     * @type int
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     */
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    protected $max;
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    /**
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     * @param int $max
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     */
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    public function __construct($max = null)
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    {
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        $this->max = $max;
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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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        $string = trim($string);
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        if ($string === '0') {
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            return $string;
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        }
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        if ($string === '') {
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            return false;
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        }
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        $length = strlen($string);
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        if (substr($string, $length - 2) == 'px') {
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            $string = substr($string, 0, $length - 2);
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        }
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        if (!is_numeric($string)) {
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            return false;
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        }
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        $int = (int)$string;
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        if ($int < 0) {
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            return '0';
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        }
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        // upper-bound value, extremely high values can
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        // crash operating systems, see <http://ha.ckers.org/imagecrash.html>
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        // WARNING, above link WILL crash you if you're using Windows
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        if ($this->max !== null && $int > $this->max) {
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            return (string)$this->max;
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        }
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        return (string)$int;
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    }
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    /**
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     * @param string $string
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     * @return HTMLPurifier_AttrDef
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     */
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    public function make($string)
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    {
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        if ($string === '') {
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            $max = null;
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        } else {
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            $max = (int)$string;
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        }
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        $class = get_class($this);
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        return new $class($max);
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    }
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}
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// vim: et sw=4 sts=4