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　晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 . Prv8 Shell

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Current File : //home/akaindir/www/crm/libraries/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Percentage.php

<?php

/**
 * Validates a Percentage as defined by the CSS spec.
 */
class HTMLPurifier_AttrDef_CSS_Percentage extends HTMLPurifier_AttrDef
{

    /**
     * Instance of HTMLPurifier_AttrDef_CSS_Number to defer number validation
     */
    protected $number_def;

    /**
     * @param Bool indicating whether to forbid negative values
     */
    public function __construct($non_negative = false) {
        $this->number_def = new HTMLPurifier_AttrDef_CSS_Number($non_negative);
    }

    public function validate($string, $config, $context) {

        $string = $this->parseCDATA($string);

        if ($string === '') return false;
        $length = strlen($string);
        if ($length === 1) return false;
        if ($string[$length - 1] !== '%') return false;

        $number = substr($string, 0, $length - 1);
        $number = $this->number_def->validate($number, $config, $context);

        if ($number === false) return false;
        return "$number%";

    }

}

// vim: et sw=4 sts=4

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