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54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
/* Routines for dealing with '\0' separated arg vectors.
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Copyright (C) 1995-2014 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <argz.h>
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#include <stdlib.h>
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#include <string.h>
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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. */
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error_t
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__argz_create (char *const argv[], char **argz, size_t *len)
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{
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int argc;
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size_t tlen = 0;
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char *const *ap;
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char *p;
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for (argc = 0; argv[argc] != NULL; ++argc)
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tlen += strlen (argv[argc]) + 1;
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if (tlen == 0)
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*argz = NULL;
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else
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{
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*argz = malloc (tlen);
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if (*argz == NULL)
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return ENOMEM;
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for (p = *argz, ap = argv; *ap; ++ap, ++p)
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p = __stpcpy (p, *ap);
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}
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*len = tlen;
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return 0;
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}
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weak_alias (__argz_create, argz_create)
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