gl/stripslash.c

   1 /* stripslash.c -- remove redundant trailing slashes from a file name
   2
   3    Copyright (C) 1990, 2001, 2003-2006 Free Software Foundation, Inc.
   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 #include <config.h>
  19
  20 #include "dirname.h"
  21
  22 /* Remove trailing slashes from FILE.  Return true if a trailing slash
  23    was removed.  This is useful when using file name completion from a
  24    shell that adds a "/" after directory names (such as tcsh and
  25    bash), because on symlinks to directories, several system calls
  26    have different semantics according to whether a trailing slash is
  27    present.  */
  28
  29 bool
  30 strip_trailing_slashes (char *file)
  31 {
  32   char *base = last_component (file);
  33   char *base_lim;
  34   bool had_slash;
  35
  36   /* last_component returns "" for file system roots, but we need to turn
  37      `///' into `/'.  */
  38   if (! *base)
  39     base = file;
  40   base_lim = base + base_len (base);
  41   had_slash = (*base_lim != '\0');
  42   *base_lim = '\0';
  43   return had_slash;
  44 }