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                <textarea name="file_content" style="width:100%; height:400px; font-family:monospace;">/* Routines for dealing with &#039;\0&#039; separated arg vectors.
   Copyright (C) 1995-2018 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
   &lt;http://www.gnu.org/licenses/&gt;.  */

#ifndef _ARGZ_H
#define _ARGZ_H	1

#include &lt;features.h&gt;
#include &lt;errno.h&gt;
#include &lt;string.h&gt;		/* 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 &#039;\0&#039; 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 &#039;\0&#039; 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 &#039;\0&#039; separated arg vector ARGZ printable by converting all the &#039;\0&#039;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 &amp; 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 &amp; 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 &amp;
   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 &amp; 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 &amp; ARGZ_LEN before BEFORE, which should be an
   existing entry in ARGZ; if BEFORE is NULL, ENTRY is appended to the end.
   Since ARGZ&#039;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&#039;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;

/* 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);

/* Returns the next entry in ARGZ &amp; 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 &lt; __argz + __argz_len)
	__entry = strchr (__entry, &#039;\0&#039;) + 1;

      return __entry &gt;= __argz + __argz_len ? (char *) NULL : (char *) __entry;
    }
  else
    return __argz_len &gt; 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 */
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