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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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Directory : /home/akaindir/public_html/crm/libraries/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/

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Current File : /home/akaindir/public_html/crm/libraries/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Color.php

<?php

/**
 * Validates Color as defined by CSS.
 */
class HTMLPurifier_AttrDef_CSS_Color extends HTMLPurifier_AttrDef
{

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

        static $colors = null;
        if ($colors === null) $colors = $config->get('Core', 'ColorKeywords');

        $color = trim($color);
        if ($color === '') return false;

        $lower = strtolower($color);
        if (isset($colors[$lower])) return $colors[$lower];

        if (strpos($color, 'rgb(') !== false) {
            // rgb literal handling
            $length = strlen($color);
            if (strpos($color, ')') !== $length - 1) return false;
            $triad = substr($color, 4, $length - 4 - 1);
            $parts = explode(',', $triad);
            if (count($parts) !== 3) return false;
            $type = false; // to ensure that they're all the same type
            $new_parts = array();
            foreach ($parts as $part) {
                $part = trim($part);
                if ($part === '') return false;
                $length = strlen($part);
                if ($part[$length - 1] === '%') {
                    // handle percents
                    if (!$type) {
                        $type = 'percentage';
                    } elseif ($type !== 'percentage') {
                        return false;
                    }
                    $num = (float) substr($part, 0, $length - 1);
                    if ($num < 0) $num = 0;
                    if ($num > 100) $num = 100;
                    $new_parts[] = "$num%";
                } else {
                    // handle integers
                    if (!$type) {
                        $type = 'integer';
                    } elseif ($type !== 'integer') {
                        return false;
                    }
                    $num = (int) $part;
                    if ($num < 0) $num = 0;
                    if ($num > 255) $num = 255;
                    $new_parts[] = (string) $num;
                }
            }
            $new_triad = implode(',', $new_parts);
            $color = "rgb($new_triad)";
        } else {
            // hexadecimal handling
            if ($color[0] === '#') {
                $hex = substr($color, 1);
            } else {
                $hex = $color;
                $color = '#' . $color;
            }
            $length = strlen($hex);
            if ($length !== 3 && $length !== 6) return false;
            if (!ctype_xdigit($hex)) return false;
        }

        return $color;

    }

}

// vim: et sw=4 sts=4

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