maint: update copyright

[gnulib.git] / lib / stripslash.c

diff --git a/lib/stripslash.c b/lib/stripslash.c
index 1a472f5..6f802d4 100644 (file)
--- a/lib/stripslash.c
+++ b/lib/stripslash.c
@@ -1,10 +1,12 @@
 /* stripslash.c -- remove redundant trailing slashes from a file name
-   Copyright (C) 1990, 2001, 2003, 2004 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   Copyright (C) 1990, 2001, 2003-2006, 2009-2014 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 2, or (at your option)
-   any later version.
+   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
@@ -12,28 +14,32 @@
    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, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-#if HAVE_CONFIG_H
-# include <config.h>
-#endif
+#include <config.h>
 
 #include "dirname.h"
 
-/* Remove trailing slashes from PATH.
-   Return true if a trailing slash was removed.
-   This is useful when using filename completion from a shell that
-   adds a "/" after directory names (such as tcsh and bash), because
-   the Unix rename and rmdir system calls return an "Invalid argument" error
-   when given a path that ends in "/" (except for the root directory).  */
+/* 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 *path)
+strip_trailing_slashes (char *file)
 {
-  char *base = base_name (path);
-  char *base_lim = base + base_len (base);
-  bool had_slash = (*base_lim != '\0');
+  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;
 }