160 lines
6.2 KiB
C
160 lines
6.2 KiB
C
/* Routines for dealing with '\0' separated arg vectors.
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Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
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Written by Miles Bader <miles@gnu.ai.mit.edu>
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef _ARGZ_H
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#define _ARGZ_H 1
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#include <features.h>
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#define __need_error_t
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#include <errno.h>
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#include <string.h> /* Need size_t, and strchr is called below. */
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#ifndef __const
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# define __const const
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#endif
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#ifndef __error_t_defined
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typedef int error_t;
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#endif
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__BEGIN_DECLS
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/* Make a '\0' separated arg vector from a unix argv vector, returning it in
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ARGZ, and the total length in LEN. If a memory allocation error occurs,
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ENOMEM is returned, otherwise 0. The result can be destroyed using free. */
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extern error_t __argz_create __P ((char *__const __argv[], char **__argz,
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size_t *__len));
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extern error_t argz_create __P ((char *__const __argv[], char **__argz,
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size_t *__len));
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/* Make a '\0' separated arg vector from a SEP separated list in
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STRING, returning it in ARGZ, and the total length in LEN. If a
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memory allocation error occurs, ENOMEM is returned, otherwise 0.
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The result can be destroyed using free. */
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extern error_t __argz_create_sep __P ((__const char *__string, int __sep,
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char **__argz, size_t *__len));
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extern error_t argz_create_sep __P ((__const char *__string, int __sep,
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char **__argz, size_t *__len));
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/* Returns the number of strings in ARGZ. */
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extern size_t __argz_count __P ((__const char *__argz, size_t __len));
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extern size_t argz_count __P ((__const char *__argz, size_t __len));
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/* Puts pointers to each string in ARGZ into ARGV, which must be large enough
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to hold them all. */
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extern void __argz_extract __P ((char *__argz, size_t __len, char **__argv));
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extern void argz_extract __P ((char *__argz, size_t __len, char **__argv));
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/* Make '\0' separated arg vector ARGZ printable by converting all the '\0's
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except the last into the character SEP. */
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extern void __argz_stringify __P ((char *__argz, size_t __len, int __sep));
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extern void argz_stringify __P ((char *__argz, size_t __len, int __sep));
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/* Append BUF, of length BUF_LEN to the argz vector in ARGZ & ARGZ_LEN. */
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extern error_t __argz_append __P ((char **__argz, size_t *__argz_len,
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__const char *__buf, size_t _buf_len));
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extern error_t argz_append __P ((char **__argz, size_t *__argz_len,
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__const char *__buf, size_t __buf_len));
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/* Append STR to the argz vector in ARGZ & ARGZ_LEN. */
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extern error_t __argz_add __P ((char **__argz, size_t *__argz_len,
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__const char *__str));
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extern error_t argz_add __P ((char **__argz, size_t *__argz_len,
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__const char *__str));
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/* Append SEP separated list in STRING to the argz vector in ARGZ &
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ARGZ_LEN. */
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extern error_t __argz_add_sep __P ((char **__argz, size_t *__argz_len,
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__const char *__string, int __delim));
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extern error_t argz_add_sep __P ((char **__argz, size_t *__argz_len,
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__const char *__string, int __delim));
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/* Delete ENTRY from ARGZ & ARGZ_LEN, if it appears there. */
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extern void __argz_delete __P ((char **__argz, size_t *__argz_len,
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char *__entry));
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extern void argz_delete __P ((char **__argz, size_t *__argz_len,
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char *__entry));
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/* Insert ENTRY into ARGZ & ARGZ_LEN before BEFORE, which should be an
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existing entry in ARGZ; if BEFORE is NULL, ENTRY is appended to the end.
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Since ARGZ's first entry is the same as ARGZ, argz_insert (ARGZ, ARGZ_LEN,
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ARGZ, ENTRY) will insert ENTRY at the beginning of ARGZ. If BEFORE is not
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in ARGZ, EINVAL is returned, else if memory can't be allocated for the new
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ARGZ, ENOMEM is returned, else 0. */
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extern error_t __argz_insert __P ((char **__argz, size_t *__argz_len,
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char *__before, __const char *__entry));
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extern error_t argz_insert __P ((char **__argz, size_t *__argz_len,
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char *__before, __const char *__entry));
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/* Replace any occurances of the string STR in ARGZ with WITH, reallocating
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ARGZ as necessary. If REPLACE_COUNT is non-zero, *REPLACE_COUNT will be
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incremented by number of replacements performed. */
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extern error_t __argz_replace (char **__argz, size_t *__argz_len,
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__const char *__str, __const char *__with,
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unsigned *__replace_count);
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extern error_t argz_replace (char **__argz, size_t *__argz_len,
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__const char *__str, __const char *__with,
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unsigned *__replace_count);
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/* Returns the next entry in ARGZ & ARGZ_LEN after ENTRY, or NULL if there
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are no more. If entry is NULL, then the first entry is returned. This
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behavior allows two convenient iteration styles:
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char *entry = 0;
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while ((entry = argz_next (argz, argz_len, entry)))
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...;
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or
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char *entry;
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for (entry = argz; entry; entry = argz_next (argz, argz_len, entry))
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...;
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*/
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extern char *__argz_next __P ((char *argz, size_t __argz_len,
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__const char *entry));
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extern char *argz_next __P ((char *argz, size_t __argz_len,
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__const char *entry));
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#ifdef __USE_EXTERN_INLINES
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extern inline char *
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__argz_next (char *__argz, size_t __argz_len, __const char *__entry)
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{
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if (__entry)
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{
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if (__entry < __argz + __argz_len)
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__entry = strchr (__entry, '\0') + 1;
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return __entry >= __argz + __argz_len ? (char *) NULL : (char *) __entry;
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}
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else
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return __argz_len > 0 ? __argz : 0;
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}
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extern inline char *
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argz_next (char *__argz, size_t __argz_len, __const char *__entry)
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{
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return __argz_next (__argz, __argz_len, __entry);
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}
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#endif /* Use extern inlines. */
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__END_DECLS
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#endif /* argz.h */
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