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authorRoland McGrath <roland@gnu.org>1996-04-29 05:21:53 +0000
committerRoland McGrath <roland@gnu.org>1996-04-29 05:21:53 +0000
commit392d7920cd6e66a9e0fd6a4fb2c93d1ccabf65b9 (patch)
tree0071b8b380e466f0f27db67b8f678bfb5f234aa8 /string/argz-create.c
parent7b3547eb0fb471e1f2135f709eb53d79a45838cb (diff)
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Mon Apr 29 00:11:59 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* errno.h [!__error_t_defined] (error_t): New type. * sysdeps/mach/hurd/errnos.awk: #define __error_t_defined after the typedef in errnos.h. * string/envz.c, string/envz.h: New files. * string/argz.h, string/argz-append.c, string/argz-count.c, string/argz-create.c, string/argz-delete.c, string/argz-extract.c, string/argz-insert.c, string/argz-stringify.c: New files. * string/Makefile (routines): Add envz, argz-*. (headers): Add argz.h, envz.h.
Diffstat (limited to 'string/argz-create.c')
-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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--- /dev/null
+++ b/string/argz-create.c
@@ -0,0 +1,53 @@
+/* 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)