1 /* Program name management.
2 Copyright (C) 2001-2003, 2005 Free Software Foundation, Inc.
3 Written by Bruno Haible <haible@clisp.cons.org>, 2001.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
8 any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software Foundation,
17 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
18
19
20 #ifdef HAVE_CONFIG_H
21 # include <config.h>
22 #endif
23
24 /* Specification. */
25 #include "progname.h"
26
27 #include <string.h>
28
29 #undef set_program_name
30
31
32 /* String containing name the program is called with.
33 To be initialized by main(). */
34 const char *program_name = NULL;
35
36 /* Set program_name, based on argv[0]. */
37 void
set_program_name(const char * argv0)38 set_program_name (const char *argv0)
39 {
40 /* libtool creates a temporary executable whose name is sometimes prefixed
41 with "lt-" (depends on the platform). It also makes argv[0] absolute.
42 Remove this "<dirname>/.libs/" or "<dirname>/.libs/lt-" prefix here. */
43 const char *slash;
44 const char *base;
45
46 slash = strrchr (argv0, '/');
47 base = (slash != NULL ? slash + 1 : argv0);
48 if (base - argv0 >= 7 && memcmp (base - 7, "/.libs/", 7) == 0)
49 argv0 = base;
50 if (strncmp (base, "lt-", 3) == 0)
51 argv0 = base + 3;
52 program_name = argv0;
53 }
54