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001: /* Routines for dealing with '\0' separated arg vectors.
002:    Copyright (C) 1995,96,97,98,99,2000,2004,2007 Free Software Foundation, Inc.
003:    This file is part of the GNU C Library.
004: 
005:    The GNU C Library is free software; you can redistribute it and/or
006:    modify it under the terms of the GNU Lesser General Public
007:    License as published by the Free Software Foundation; either
008:    version 2.1 of the License, or (at your option) any later version.
009: 
010:    The GNU C Library is distributed in the hope that it will be useful,
011:    but WITHOUT ANY WARRANTY; without even the implied warranty of
012:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
013:    Lesser General Public License for more details.
014: 
015:    You should have received a copy of the GNU Lesser General Public
016:    License along with the GNU C Library; if not, write to the Free
017:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
018:    02111-1307 USA.  */
019: 
020: #ifndef _ARGZ_H
021: #define _ARGZ_H 1
022: 
023: #include <features.h>
024: 
025: #define __need_error_t
026: #include <errno.h>
027: #include <string.h>             /* Need size_t, and strchr is called below.  */
028: 
029: #ifndef __const
030: # define __const const
031: #endif
032: 
033: #ifndef __error_t_defined
034: typedef int error_t;
035: #endif
036: 
037: 
038: __BEGIN_DECLS
039: 
040: /* Make a '\0' separated arg vector from a unix argv vector, returning it in
041:    ARGZ, and the total length in LEN.  If a memory allocation error occurs,
042:    ENOMEM is returned, otherwise 0.  The result can be destroyed using free. */
043: extern error_t __argz_create (char *__const __argv[], char **__restrict __argz,
044:                               size_t *__restrict __len) __THROW;
045: extern error_t argz_create (char *__const __argv[], char **__restrict __argz,
046:                             size_t *__restrict __len) __THROW;
047: 
048: /* Make a '\0' separated arg vector from a SEP separated list in
049:    STRING, returning it in ARGZ, and the total length in LEN.  If a
050:    memory allocation error occurs, ENOMEM is returned, otherwise 0.
051:    The result can be destroyed using free.  */
052: extern error_t __argz_create_sep (__const char *__restrict __string,
053:                                   int __sep, char **__restrict __argz,
054:                                   size_t *__restrict __len) __THROW;
055: extern error_t argz_create_sep (__const char *__restrict __string,
056:                                 int __sep, char **__restrict __argz,
057:                                 size_t *__restrict __len) __THROW;
058: 
059: /* Returns the number of strings in ARGZ.  */
060: extern size_t __argz_count (__const char *__argz, size_t __len)
061:      __THROW __attribute_pure__;
062: extern size_t argz_count (__const char *__argz, size_t __len)
063:      __THROW __attribute_pure__;
064: 
065: /* Puts pointers to each string in ARGZ into ARGV, which must be large enough
066:    to hold them all.  */
067: extern void __argz_extract (__const char *__restrict __argz, size_t __len,
068:                             char **__restrict __argv) __THROW;
069: extern void argz_extract (__const char *__restrict __argz, size_t __len,
070:                           char **__restrict __argv) __THROW;
071: 
072: /* Make '\0' separated arg vector ARGZ printable by converting all the '\0's
073:    except the last into the character SEP.  */
074: extern void __argz_stringify (char *__argz, size_t __len, int __sep) __THROW;
075: extern void argz_stringify (char *__argz, size_t __len, int __sep) __THROW;
076: 
077: /* Append BUF, of length BUF_LEN to the argz vector in ARGZ & ARGZ_LEN.  */
078: extern error_t __argz_append (char **__restrict __argz,
079:                               size_t *__restrict __argz_len,
080:                               __const char *__restrict __buf, size_t _buf_len)
081:      __THROW;
082: extern error_t argz_append (char **__restrict __argz,
083:                             size_t *__restrict __argz_len,
084:                             __const char *__restrict __buf, size_t __buf_len)
085:      __THROW;
086: 
087: /* Append STR to the argz vector in ARGZ & ARGZ_LEN.  */
088: extern error_t __argz_add (char **__restrict __argz,
089:                            size_t *__restrict __argz_len,
090:                            __const char *__restrict __str) __THROW;
091: extern error_t argz_add (char **__restrict __argz,
092:                          size_t *__restrict __argz_len,
093:                          __const char *__restrict __str) __THROW;
094: 
095: /* Append SEP separated list in STRING to the argz vector in ARGZ &
096:    ARGZ_LEN.  */
097: extern error_t __argz_add_sep (char **__restrict __argz,
098:                                size_t *__restrict __argz_len,
099:                                __const char *__restrict __string, int __delim)
100:      __THROW;
101: extern 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.  */
107: extern void __argz_delete (char **__restrict __argz,
108:                            size_t *__restrict __argz_len,
109:                            char *__restrict __entry) __THROW;
110: extern 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.  */
120: extern error_t __argz_insert (char **__restrict __argz,
121:                               size_t *__restrict __argz_len,
122:                               char *__restrict __before,
123:                               __const char *__restrict __entry) __THROW;
124: extern 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.  */
132: extern 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);
137: extern 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: /* Returns the next entry in ARGZ & ARGZ_LEN after ENTRY, or NULL if there
144:    are no more.  If entry is NULL, then the first entry is returned.  This
145:    behavior allows two convenient iteration styles:
146: 
147:     char *entry = 0;
148:     while ((entry = argz_next (argz, argz_len, entry)))
149:       ...;
150: 
151:    or
152: 
153:     char *entry;
154:     for (entry = argz; entry; entry = argz_next (argz, argz_len, entry))
155:       ...;
156: */
157: extern char *__argz_next (__const char *__restrict __argz, size_t __argz_len,
158:                           __const char *__restrict __entry) __THROW;
159: extern char *argz_next (__const char *__restrict __argz, size_t __argz_len,
160:                         __const char *__restrict __entry) __THROW;
161: 
162: #ifdef __USE_EXTERN_INLINES
163: __extern_inline char *
164: __NTH (__argz_next (__const char *__argz, size_t __argz_len,
165:                     __const char *__entry))
166: {
167:   if (__entry)
168:     {
169:       if (__entry < __argz + __argz_len)
170:         __entry = strchr (__entry, '\0') + 1;
171: 
172:       return __entry >= __argz + __argz_len ? (char *) NULL : (char *) __entry;
173:     }
174:   else
175:     return __argz_len > 0 ? (char *) __argz : 0;
176: }
177: __extern_inline char *
178: __NTH (argz_next (__const char *__argz, size_t __argz_len,
179:                   __const char *__entry))
180: {
181:   return __argz_next (__argz, __argz_len, __entry);
182: }
183: #endif /* Use extern inlines.  */
184: 
185: __END_DECLS
186: 
187: #endif /* argz.h */
188: 

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