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。 .
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Current File : //home/akaindir/www/crm/libraries/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/ListStyle.php
<?php

/**
 * Validates shorthand CSS property list-style.
 * @warning Does not support url tokens that have internal spaces.
 */
class HTMLPurifier_AttrDef_CSS_ListStyle extends HTMLPurifier_AttrDef
{

    /**
     * Local copy of component validators.
     * @note See HTMLPurifier_AttrDef_CSS_Font::$info for a similar impl.
     */
    protected $info;

    public function __construct($config) {
        $def = $config->getCSSDefinition();
        $this->info['list-style-type']     = $def->info['list-style-type'];
        $this->info['list-style-position'] = $def->info['list-style-position'];
        $this->info['list-style-image'] = $def->info['list-style-image'];
    }

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

        // regular pre-processing
        $string = $this->parseCDATA($string);
        if ($string === '') return false;

        // assumes URI doesn't have spaces in it
        $bits = explode(' ', strtolower($string)); // bits to process

        $caught = array();
        $caught['type']     = false;
        $caught['position'] = false;
        $caught['image']    = false;

        $i = 0; // number of catches
        $none = false;

        foreach ($bits as $bit) {
            if ($i >= 3) return; // optimization bit
            if ($bit === '') continue;
            foreach ($caught as $key => $status) {
                if ($status !== false) continue;
                $r = $this->info['list-style-' . $key]->validate($bit, $config, $context);
                if ($r === false) continue;
                if ($r === 'none') {
                    if ($none) continue;
                    else $none = true;
                    if ($key == 'image') continue;
                }
                $caught[$key] = $r;
                $i++;
                break;
            }
        }

        if (!$i) return false;

        $ret = array();

        // construct type
        if ($caught['type']) $ret[] = $caught['type'];

        // construct image
        if ($caught['image']) $ret[] = $caught['image'];

        // construct position
        if ($caught['position']) $ret[] = $caught['position'];

        if (empty($ret)) return false;
        return implode(' ', $ret);

    }

}

// vim: et sw=4 sts=4

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