source: vendor/glibc-include/2.3.2/argz.h@ 2605

Last change on this file since 2605 was 1069, checked in by (none), 22 years ago

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1/* Routines for dealing with '\0' separated arg vectors.
2 Copyright (C) 1995, 96, 97, 98, 99, 2000 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
19
20#ifndef _ARGZ_H
21#define _ARGZ_H 1
22
23#include <features.h>
24
25#define __need_error_t
26#include <errno.h>
27#include <string.h> /* Need size_t, and strchr is called below. */
28
29#ifndef __const
30# define __const const
31#endif
32
33#ifndef __error_t_defined
34typedef int error_t;
35#endif
36
37
38__BEGIN_DECLS
39
40/* Make a '\0' separated arg vector from a unix argv vector, returning it in
41 ARGZ, and the total length in LEN. If a memory allocation error occurs,
42 ENOMEM is returned, otherwise 0. The result can be destroyed using free. */
43extern error_t __argz_create (char *__const __argv[], char **__restrict __argz,
44 size_t *__restrict __len) __THROW;
45extern error_t argz_create (char *__const __argv[], char **__restrict __argz,
46 size_t *__restrict __len) __THROW;
47
48/* Make a '\0' separated arg vector from a SEP separated list in
49 STRING, returning it in ARGZ, and the total length in LEN. If a
50 memory allocation error occurs, ENOMEM is returned, otherwise 0.
51 The result can be destroyed using free. */
52extern error_t __argz_create_sep (__const char *__restrict __string,
53 int __sep, char **__restrict __argz,
54 size_t *__restrict __len) __THROW;
55extern error_t argz_create_sep (__const char *__restrict __string,
56 int __sep, char **__restrict __argz,
57 size_t *__restrict __len) __THROW;
58
59/* Returns the number of strings in ARGZ. */
60extern size_t __argz_count (__const char *__argz, size_t __len)
61 __THROW __attribute_pure__;
62extern size_t argz_count (__const char *__argz, size_t __len)
63 __THROW __attribute_pure__;
64
65/* Puts pointers to each string in ARGZ into ARGV, which must be large enough
66 to hold them all. */
67extern void __argz_extract (__const char *__restrict __argz, size_t __len,
68 char **__restrict __argv) __THROW;
69extern void argz_extract (__const char *__restrict __argz, size_t __len,
70 char **__restrict __argv) __THROW;
71
72/* Make '\0' separated arg vector ARGZ printable by converting all the '\0's
73 except the last into the character SEP. */
74extern void __argz_stringify (char *__argz, size_t __len, int __sep) __THROW;
75extern void argz_stringify (char *__argz, size_t __len, int __sep) __THROW;
76
77/* Append BUF, of length BUF_LEN to the argz vector in ARGZ & ARGZ_LEN. */
78extern error_t __argz_append (char **__restrict __argz,
79 size_t *__restrict __argz_len,
80 __const char *__restrict __buf, size_t _buf_len)
81 __THROW;
82extern error_t argz_append (char **__restrict __argz,
83 size_t *__restrict __argz_len,
84 __const char *__restrict __buf, size_t __buf_len)
85 __THROW;
86
87/* Append STR to the argz vector in ARGZ & ARGZ_LEN. */
88extern error_t __argz_add (char **__restrict __argz,
89 size_t *__restrict __argz_len,
90 __const char *__restrict __str) __THROW;
91extern error_t argz_add (char **__restrict __argz,
92 size_t *__restrict __argz_len,
93 __const char *__restrict __str) __THROW;
94
95/* Append SEP separated list in STRING to the argz vector in ARGZ &
96 ARGZ_LEN. */
97extern error_t __argz_add_sep (char **__restrict __argz,
98 size_t *__restrict __argz_len,
99 __const char *__restrict __string, int __delim)
100 __THROW;
101extern error_t argz_add_sep (char **__restrict __argz,
102 size_t *__restrict __argz_len,
103 __const char *__restrict __string, int __delim)
104 __THROW;
105
106/* Delete ENTRY from ARGZ & ARGZ_LEN, if it appears there. */
107extern void __argz_delete (char **__restrict __argz,
108 size_t *__restrict __argz_len,
109 char *__restrict __entry) __THROW;
110extern void argz_delete (char **__restrict __argz,
111 size_t *__restrict __argz_len,
112 char *__restrict __entry) __THROW;
113
114/* Insert ENTRY into ARGZ & ARGZ_LEN before BEFORE, which should be an
115 existing entry in ARGZ; if BEFORE is NULL, ENTRY is appended to the end.
116 Since ARGZ's first entry is the same as ARGZ, argz_insert (ARGZ, ARGZ_LEN,
117 ARGZ, ENTRY) will insert ENTRY at the beginning of ARGZ. If BEFORE is not
118 in ARGZ, EINVAL is returned, else if memory can't be allocated for the new
119 ARGZ, ENOMEM is returned, else 0. */
120extern error_t __argz_insert (char **__restrict __argz,
121 size_t *__restrict __argz_len,
122 char *__restrict __before,
123 __const char *__restrict __entry) __THROW;
124extern error_t argz_insert (char **__restrict __argz,
125 size_t *__restrict __argz_len,
126 char *__restrict __before,
127 __const char *__restrict __entry) __THROW;
128
129/* Replace any occurrences of the string STR in ARGZ with WITH, reallocating
130 ARGZ as necessary. If REPLACE_COUNT is non-zero, *REPLACE_COUNT will be
131 incremented by number of replacements performed. */
132extern error_t __argz_replace (char **__restrict __argz,
133 size_t *__restrict __argz_len,
134 __const char *__restrict __str,
135 __const char *__restrict __with,
136 unsigned int *__restrict __replace_count);
137extern error_t argz_replace (char **__restrict __argz,
138 size_t *__restrict __argz_len,
139 __const char *__restrict __str,
140 __const char *__restrict __with,
141 unsigned int *__restrict __replace_count);
142
143
144/* Returns the next entry in ARGZ & ARGZ_LEN after ENTRY, or NULL if there
145 are no more. If entry is NULL, then the first entry is returned. This
146 behavior allows two convenient iteration styles:
147
148 char *entry = 0;
149 while ((entry = argz_next (argz, argz_len, entry)))
150 ...;
151
152 or
153
154 char *entry;
155 for (entry = argz; entry; entry = argz_next (argz, argz_len, entry))
156 ...;
157*/
158extern char *__argz_next (__const char *__restrict __argz, size_t __argz_len,
159 __const char *__restrict __entry) __THROW;
160extern char *argz_next (__const char *__restrict __argz, size_t __argz_len,
161 __const char *__restrict __entry) __THROW;
162
163#ifdef __USE_EXTERN_INLINES
164extern inline char *
165__argz_next (__const char *__argz, size_t __argz_len,
166 __const char *__entry) __THROW
167{
168 if (__entry)
169 {
170 if (__entry < __argz + __argz_len)
171 __entry = strchr (__entry, '\0') + 1;
172
173 return __entry >= __argz + __argz_len ? (char *) NULL : (char *) __entry;
174 }
175 else
176 return __argz_len > 0 ? (char *) __argz : 0;
177}
178extern inline char *
179argz_next (__const char *__argz, size_t __argz_len,
180 __const char *__entry) __THROW
181{
182 return __argz_next (__argz, __argz_len, __entry);
183}
184#endif /* Use extern inlines. */
185
186__END_DECLS
187
188#endif /* argz.h */
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