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glibc  2.9
argz-append.c
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00001 /* Routines for dealing with '\0' separated arg vectors.
00002    Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004    Written by Miles Bader <miles@gnu.ai.mit.edu>
00005 
00006    The GNU C Library is free software; you can redistribute it and/or
00007    modify it under the terms of the GNU Lesser General Public
00008    License as published by the Free Software Foundation; either
00009    version 2.1 of the License, or (at your option) any later version.
00010 
00011    The GNU C Library is distributed in the hope that it will be useful,
00012    but WITHOUT ANY WARRANTY; without even the implied warranty of
00013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014    Lesser General Public License for more details.
00015 
00016    You should have received a copy of the GNU Lesser General Public
00017    License along with the GNU C Library; if not, write to the Free
00018    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00019    02111-1307 USA.  */
00020 
00021 #include <argz.h>
00022 #include <string.h>
00023 #include <stdlib.h>
00024 
00025 /* Add BUF, of length BUF_LEN to the argz vector in ARGZ & ARGZ_LEN.  */
00026 error_t
00027 __argz_append (char **argz, size_t *argz_len, const char *buf, size_t buf_len)
00028 {
00029   size_t new_argz_len = *argz_len + buf_len;
00030   char *new_argz = realloc (*argz, new_argz_len);
00031   if (new_argz)
00032     {
00033       memcpy (new_argz + *argz_len, buf, buf_len);
00034       *argz = new_argz;
00035       *argz_len = new_argz_len;
00036       return 0;
00037     }
00038   else
00039     return ENOMEM;
00040 }
00041 weak_alias (__argz_append, argz_append)
00042 
00043 /* Add STR to the argz vector in ARGZ & ARGZ_LEN.  This should be moved into
00044    argz.c in libshouldbelibc.  */
00045 error_t
00046 __argz_add (char **argz, size_t *argz_len, const char *str)
00047 {
00048   return __argz_append (argz, argz_len, str, strlen (str) + 1);
00049 }
00050 weak_alias (__argz_add, argz_add)