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。 sh-3ll

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/*
   +----------------------------------------------------------------------+
   | Zend Engine                                                          |
   +----------------------------------------------------------------------+
   | Copyright (c) 1998-2015 Zend Technologies Ltd. (http://www.zend.com) |
   +----------------------------------------------------------------------+
   | This source file is subject to version 2.00 of the Zend license,     |
   | that is bundled with this package in the file LICENSE, and is        | 
   | available through the world-wide-web at the following url:           |
   | http://www.zend.com/license/2_00.txt.                                |
   | If you did not receive a copy of the Zend license and are unable to  |
   | obtain it through the world-wide-web, please send a note to          |
   | license@zend.com so we can mail you a copy immediately.              |
   +----------------------------------------------------------------------+
   | Authors: Dmitry Stogov <dmitry@zend.com>                             |
   +----------------------------------------------------------------------+
*/

/* $Id: $ */

#ifndef ZEND_STRING_H
#define ZEND_STRING_H

#include "zend.h"

BEGIN_EXTERN_C()
ZEND_API extern const char *(*zend_new_interned_string)(const char *str, int len, int free_src TSRMLS_DC);
ZEND_API extern void (*zend_interned_strings_snapshot)(TSRMLS_D);
ZEND_API extern void (*zend_interned_strings_restore)(TSRMLS_D);

void zend_interned_strings_init(TSRMLS_D);
void zend_interned_strings_dtor(TSRMLS_D);

ZEND_API char *zend_string_concat3(
		const char *str1, size_t str1_len,
		const char *str2, size_t str2_len,
		const char *str3, size_t str3_len,
		size_t *new_len);

END_EXTERN_C()

#ifndef ZTS

#define IS_INTERNED(s) \
	(((s) >= CG(interned_strings_start)) && ((s) < CG(interned_strings_end)))

#else

#define IS_INTERNED(s) \
	(0)

#endif

#define INTERNED_LEN(s) \
	(((Bucket*)(((char*)(s))-sizeof(Bucket)))->nKeyLength)

#define INTERNED_HASH(s) \
	(((Bucket*)(((char*)(s))-sizeof(Bucket)))->h)

#define str_efree(s) do { \
		if (!IS_INTERNED(s)) { \
			efree((char*)s); \
		} \
	} while (0)

#define str_free(s) do { \
		if (!IS_INTERNED(s)) { \
			free((char*)s); \
		} \
	} while (0)

#endif /* ZEND_STRING_H */

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * indent-tabs-mode: t
 * End:
 */