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Initial revision

    1: /* Program name management.
    2:    Copyright (C) 2001-2003, 2005-2009 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 3 of the License, or
    8:    (at your option) 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, see <http://www.gnu.org/licenses/>.  */
   17: 
   18: 
   19: #include <config.h>
   20: 
   21: /* Specification.  */
   22: #undef ENABLE_RELOCATABLE /* avoid defining set_program_name as a macro */
   23: #include "progname.h"
   24: 
   25: #include <string.h>
   26: 
   27: 
   28: /* String containing name the program is called with.
   29:    To be initialized by main().  */
   30: const char *program_name = NULL;
   31: 
   32: /* Set program_name, based on argv[0].  */
   33: void
   34: set_program_name (const char *argv0)
   35: {
   36:   /* libtool creates a temporary executable whose name is sometimes prefixed
   37:      with "lt-" (depends on the platform).  It also makes argv[0] absolute.
   38:      But the name of the temporary executable is a detail that should not be
   39:      visible to the end user and to the test suite.
   40:      Remove this "<dirname>/.libs/" or "<dirname>/.libs/lt-" prefix here.  */
   41:   const char *slash;
   42:   const char *base;
   43: 
   44:   slash = strrchr (argv0, '/');
   45:   base = (slash != NULL ? slash + 1 : argv0);
   46:   if (base - argv0 >= 7 && strncmp (base - 7, "/.libs/", 7) == 0)
   47:     {
   48:       argv0 = base;
   49:       if (strncmp (base, "lt-", 3) == 0)
   50: 	argv0 = base + 3;
   51:     }
   52: 
   53:   /* But don't strip off a leading <dirname>/ in general, because when the user
   54:      runs
   55:          /some/hidden/place/bin/cp foo foo
   56:      he should get the error message
   57:          /some/hidden/place/bin/cp: `foo' and `foo' are the same file
   58:      not
   59:          cp: `foo' and `foo' are the same file
   60:    */
   61: 
   62:   program_name = argv0;
   63: }