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Annotation of embedaddon/libiconv/srclib/progname.c, revision 1.1

1.1     ! misho       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: }