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  #   ˆl–Ðz¾”*ClÊq@‚àCq¦ÔÅ£Æƒp‡ÅÀÃ £    /* Routines for dealing with '\0' separated arg vectors.
   Copyright (C) 1995-2021 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
   <https://www.gnu.org/licenses/>.  */

#ifndef _ARGZ_H
#define _ARGZ_H	1

#include <features.h>
#include <errno.h>
#include <string.h>		/* Need size_t, and strchr is called below.  */

__BEGIN_DECLS

/* error_t may or may not be available from errno.h, depending on the
   operating system.  */
#ifndef __error_t_defined
# define __error_t_defined 1
typedef int error_t;
#endif

/* 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;

/* 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;

/* 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;

/* 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;

/* 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;

/* 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 A