/* stripslash.c -- remove redundant trailing slashes from a file name

   Copyright (C) 1990, 2001, 2003-2006, 2009-2018 Free Software Foundation,

   Inc.

   This program is free software: you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, or

   (at your option) any later version.

   This program 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 General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */

#include <config.h>

#include "dirname.h"

/* Remove trailing slashes from FILE.  Return true if a trailing slash

   was removed.  This is useful when using file name completion from a

   shell that adds a "/" after directory names (such as tcsh and

   bash), because on symlinks to directories, several system calls

   have different semantics according to whether a trailing slash is

   present.  */

bool

strip_trailing_slashes (char *file)

{

  char *base = last_component (file);

  char *base_lim;

  bool had_slash;

  /* last_component returns "" for file system roots, but we need to turn

     "///" into "/".  */

  if (! *base)

    base = file;

  base_lim = base + base_len (base);

  had_slash = (*base_lim != '\0');

  *base_lim = '\0';

  return had_slash;

}