Proyectos de Subversion Moodle

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1 efrain 1 
<?php
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/**
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 * Validates a Percentage as defined by the CSS spec.
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 */
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class HTMLPurifier_AttrDef_CSS_Percentage extends HTMLPurifier_AttrDef
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{
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    /**
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     * Instance to defer number validation to.
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     * @type HTMLPurifier_AttrDef_CSS_Number
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     */
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    protected $number_def;
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    /**
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     * @param bool $non_negative Whether to forbid negative values
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     */
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    public function __construct($non_negative = false)
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    {
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        $this->number_def = new HTMLPurifier_AttrDef_CSS_Number($non_negative);
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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 = $this->parseCDATA($string);
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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 ($length === 1) {
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            return false;
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        }
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        if ($string[$length - 1] !== '%') {
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            return false;
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        }
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        $number = substr($string, 0, $length - 1);
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        $number = $this->number_def->validate($number, $config, $context);
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        if ($number === false) {
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            return false;
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        }
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        return "$number%";
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    }
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}
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// vim: et sw=4 sts=4