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-rw-r--r--string/argz-create.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/string/argz-create.c b/string/argz-create.c
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+++ b/string/argz-create.c
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+/* Routines for dealing with '\0' separated arg vectors.
+
+   Copyright (C) 1995, 1996 Free Software Foundation, Inc.
+
+   Written by Miles Bader <miles@gnu.ai.mit.edu>
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program 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
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include <argz.h>
+#include <stdlib.h>
+#include <string.h>
+
+/* 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.  */
+error_t
+__argz_create (char **argv, char **argz, size_t *len)
+{
+  int argc;
+  size_t tlen = 0;
+  char *p, **ap;
+
+  for (argc = 0; argv[argc] != NULL; ++argc)
+    tlen += strlen (argv[argc]);
+
+  if (tlen == 0)
+    *argz = NULL;
+  else
+    {
+      *argz = malloc(tlen);
+      if (*argz == NULL)
+	return ENOMEM;
+
+      for (p = *argz, ap = argv; *ap; ++ap, ++p)
+	p = __stpcpy (p, *ap);
+    }
+  *len = tlen;
+
+  return 0;
+}
+weak_alias (__argz_create, argz_create)