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glibc/string/argz.h
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/* Routines for dealing with '\0' separated arg vectors. | |
Copyright (C) 1995-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
The GNU C Library 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. | |
The GNU C Library 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 the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#ifndef _ARGZ_H | |
#define _ARGZ_H 1 | |
#include <features.h> | |
#define __need_error_t | |
#include <errno.h> | |
#include <string.h> /* Need size_t, and strchr is called below. */ | |
#ifndef __error_t_defined | |
typedef int error_t; | |
#endif | |
__BEGIN_DECLS | |
/* Make a '\0' separated arg vector from a unix argv vector, returning it in | |
ARGZ, and the total length in LEN. If a memory allocation error occurs, | |
ENOMEM is returned, otherwise 0. The result can be destroyed using free. */ | |
extern error_t __argz_create (char *const __argv[], char **__restrict __argz, | |
size_t *__restrict __len) __THROW; | |
extern error_t argz_create (char *const __argv[], char **__restrict __argz, | |
size_t *__restrict __len) __THROW; | |
/* Make a '\0' separated arg vector from a SEP separated list in | |
STRING, returning it in ARGZ, and the total length in LEN. If a | |
memory allocation error occurs, ENOMEM is returned, otherwise 0. | |
The result can be destroyed using free. */ | |
extern error_t __argz_create_sep (const char *__restrict __string, | |
int __sep, char **__restrict __argz, | |
size_t *__restrict __len) __THROW; | |
extern error_t argz_create_sep (const char *__restrict __string, | |
int __sep, char **__restrict __argz, | |
size_t *__restrict __len) __THROW; | |
/* Returns the number of strings in ARGZ. */ | |
extern size_t __argz_count (const char *__argz, size_t __len) | |
__THROW __attribute_pure__; | |
extern size_t argz_count (const char *__argz, size_t __len) | |
__THROW __attribute_pure__; | |
/* Puts pointers to each string in ARGZ into ARGV, which must be large enough | |
to hold them all. */ | |
extern void __argz_extract (const char *__restrict __argz, size_t __len, | |
char **__restrict __argv) __THROW; | |
extern void argz_extract (const char *__restrict __argz, size_t __len, | |
char **__restrict __argv) __THROW; | |
/* Make '\0' separated arg vector ARGZ printable by converting all the '\0's | |
except the last into the character SEP. */ | |
extern void __argz_stringify (char *__argz, size_t __len, int __sep) __THROW; | |
extern void argz_stringify (char *__argz, size_t __len, int __sep) __THROW; | |
/* Append BUF, of length BUF_LEN to the argz vector in ARGZ & ARGZ_LEN. */ | |
extern error_t __argz_append (char **__restrict __argz, | |
size_t *__restrict __argz_len, | |
const char *__restrict __buf, size_t __buf_len) | |
__THROW; | |
extern error_t argz_append (char **__restrict __argz, | |
size_t *__restrict __argz_len, | |
const char *__restrict __buf, size_t __buf_len) | |
__THROW; | |
/* Append STR to the argz vector in ARGZ & ARGZ_LEN. */ | |
extern error_t __argz_add (char **__restrict __argz, | |
size_t *__restrict __argz_len, | |
const char *__restrict __str) __THROW; | |
extern error_t argz_add (char **__restrict __argz, | |
size_t *__restrict __argz_len, | |
const char *__restrict __str) __THROW; | |
/* Append SEP separated list in STRING to the argz vector in ARGZ & | |
ARGZ_LEN. */ | |
extern error_t __argz_add_sep (char **__restrict __argz, | |
size_t *__restrict __argz_len, | |
const char *__restrict __string, int __delim) | |
__THROW; | |
extern error_t argz_add_sep (char **__restrict __argz, | |
size_t *__restrict __argz_len, | |
const char *__restrict __string, int __delim) | |
__THROW; | |
/* Delete ENTRY from ARGZ & ARGZ_LEN, if it appears there. */ | |
extern void __argz_delete (char **__restrict __argz, | |
size_t *__restrict __argz_len, | |
char *__restrict __entry) __THROW; | |
extern void argz_delete (char **__restrict __argz, | |
size_t *__restrict __argz_len, | |
char *__restrict __entry) __THROW; | |
/* Insert ENTRY into ARGZ & ARGZ_LEN before BEFORE, which should be an | |
existing entry in ARGZ; if BEFORE is NULL, ENTRY is appended to the end. | |
Since ARGZ's first entry is the same as ARGZ, argz_insert (ARGZ, ARGZ_LEN, | |
ARGZ, ENTRY) will insert ENTRY at the beginning of ARGZ. If BEFORE is not | |
in ARGZ, EINVAL is returned, else if memory can't be allocated for the new | |
ARGZ, ENOMEM is returned, else 0. */ | |
extern error_t __argz_insert (char **__restrict __argz, | |
size_t *__restrict __argz_len, | |
char *__restrict __before, | |
const char *__restrict __entry) __THROW; | |
extern error_t argz_insert (char **__restrict __argz, | |
size_t *__restrict __argz_len, | |
char *__restrict __before, | |
const char *__restrict __entry) __THROW; | |
/* Replace any occurrences of the string STR in ARGZ with WITH, reallocating | |
ARGZ as necessary. If REPLACE_COUNT is non-zero, *REPLACE_COUNT will be | |
incremented by number of replacements performed. */ | |
extern error_t __argz_replace (char **__restrict __argz, | |
size_t *__restrict __argz_len, | |
const char *__restrict __str, | |
const char *__restrict __with, | |
unsigned int *__restrict __replace_count); | |
extern error_t argz_replace (char **__restrict __argz, | |
size_t *__restrict __argz_len, | |
const char *__restrict __str, | |
const char *__restrict __with, | |
unsigned int *__restrict __replace_count); | |
/* Returns the next entry in ARGZ & ARGZ_LEN after ENTRY, or NULL if there | |
are no more. If entry is NULL, then the first entry is returned. This | |
behavior allows two convenient iteration styles: | |
char *entry = 0; | |
while ((entry = argz_next (argz, argz_len, entry))) | |
...; | |
or | |
char *entry; | |
for (entry = argz; entry; entry = argz_next (argz, argz_len, entry)) | |
...; | |
*/ | |
extern char *__argz_next (const char *__restrict __argz, size_t __argz_len, | |
const char *__restrict __entry) __THROW; | |
extern char *argz_next (const char *__restrict __argz, size_t __argz_len, | |
const char *__restrict __entry) __THROW; | |
#ifdef __USE_EXTERN_INLINES | |
__extern_inline char * | |
__NTH (__argz_next (const char *__argz, size_t __argz_len, | |
const char *__entry)) | |
{ | |
if (__entry) | |
{ | |
if (__entry < __argz + __argz_len) | |
__entry = strchr (__entry, '\0') + 1; | |
return __entry >= __argz + __argz_len ? (char *) NULL : (char *) __entry; | |
} | |
else | |
return __argz_len > 0 ? (char *) __argz : 0; | |
} | |
__extern_inline char * | |
__NTH (argz_next (const char *__argz, size_t __argz_len, | |
const char *__entry)) | |
{ | |
return __argz_next (__argz, __argz_len, __entry); | |
} | |
#endif /* Use extern inlines. */ | |
__END_DECLS | |
#endif /* argz.h */ |