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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/* Parse printf format string.
Copyright (C) 1999, 2002-2003, 2005, 2007, 2010-2011, 2015-2016 Free
Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef _PRINTF_PARSE_H
#define _PRINTF_PARSE_H
#if HAVE_FEATURES_H
# include <features.h> /* for __GLIBC__, __UCLIBC__ */
#endif
#include "printf-args.h"
/* Flags */
#define FLAG_GROUP 1 /* ' flag */
#define FLAG_LEFT 2 /* - flag */
#define FLAG_SHOWSIGN 4 /* + flag */
#define FLAG_SPACE 8 /* space flag */
#define FLAG_ALT 16 /* # flag */
#define FLAG_ZERO 32
#if __GLIBC__ >= 2 && !defined __UCLIBC__
# define FLAG_LOCALIZED 64 /* I flag, uses localized digits */
#endif
/* arg_index value indicating that no argument is consumed. */
#define ARG_NONE (~(size_t)0)
/* Number of directly allocated directives (no malloc() needed). */
#define N_DIRECT_ALLOC_DIRECTIVES 7
/* A parsed directive. */
typedef struct
{
const char* dir_start;
const char* dir_end;
int flags;
const char* width_start;
const char* width_end;
size_t width_arg_index;
const char* precision_start;
const char* precision_end;
size_t precision_arg_index;
char conversion; /* d i o u x X f e E g G c s p n U % but not C S */
size_t arg_index;
}
char_directive;
/* A parsed format string. */
typedef struct
{
size_t count;
char_directive *dir;
size_t max_width_length;
size_t max_precision_length;
char_directive direct_alloc_dir[N_DIRECT_ALLOC_DIRECTIVES];
}
char_directives;
/* Parses the format string. Fills in the number N of directives, and fills
in directives[0], ..., directives[N-1], and sets directives[N].dir_start
to the end of the format string. Also fills in the arg_type fields of the
arguments and the needed count of arguments. */
#ifdef STATIC
STATIC
#else
extern
#endif
int printf_parse (const char *format, char_directives *d, arguments *a);
#endif /* _PRINTF_PARSE_H */