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/ConfigSchema/ValidatorAtom.php
<?php

/**
 * Fluent interface for validating the contents of member variables.
 * This should be immutable. See HTMLPurifier_ConfigSchema_Validator for
 * use-cases. We name this an 'atom' because it's ONLY for validations that
 * are independent and usually scalar.
 */
class HTMLPurifier_ConfigSchema_ValidatorAtom
{

    protected $context, $obj, $member, $contents;

    public function __construct($context, $obj, $member) {
        $this->context     = $context;
        $this->obj         = $obj;
        $this->member      = $member;
        $this->contents    =& $obj->$member;
    }

    public function assertIsString() {
        if (!is_string($this->contents)) $this->error('must be a string');
        return $this;
    }

    public function assertIsBool() {
        if (!is_bool($this->contents)) $this->error('must be a boolean');
        return $this;
    }

    public function assertIsArray() {
        if (!is_array($this->contents)) $this->error('must be an array');
        return $this;
    }

    public function assertNotNull() {
        if ($this->contents === null) $this->error('must not be null');
        return $this;
    }

    public function assertAlnum() {
        $this->assertIsString();
        if (!ctype_alnum($this->contents)) $this->error('must be alphanumeric');
        return $this;
    }

    public function assertNotEmpty() {
        if (empty($this->contents)) $this->error('must not be empty');
        return $this;
    }

    public function assertIsLookup() {
        $this->assertIsArray();
        foreach ($this->contents as $v) {
            if ($v !== true) $this->error('must be a lookup array');
        }
        return $this;
    }

    protected function error($msg) {
        throw new HTMLPurifier_ConfigSchema_Exception(ucfirst($this->member) . ' in ' . $this->context . ' ' . $msg);
    }

}

// vim: et sw=4 sts=4

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