/* Return basename of given pathname according to the weird XPG specification. Copyright (C) 1997 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU C Library 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include <string.h> #include <libgen.h> char * __xpg_basename (char *filename) { char *p; if (filename == NULL || filename[0] == '\0') /* We return a pointer to a static string containing ".". */ p = (char *) "."; else { p = strrchr (filename, '/'); if (p == NULL) /* There is no slash in the filename. Return the whole string. */ p = filename; else { if (p[1] == '\0') { /* We must remove trailing '/'. */ while (p > filename && p[-1] == '/') --p; /* Now we can be in two situations: a) the string only contains '/' characters, so we return '/' b) p points past the last component, but we have to remove the trailing slash. */ if (p > filename) { *p-- = '\0'; while (p > filename && p[-1] != '/') --p; } else /* The last slash we already found is the right position to return. */ while (p[1] != '\0') ++p; } } } return p; }