X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fstripslash.c;h=0e452a95ef751751bf0a4af44bf2166f3cf2aa32;hb=fa1db0dd22768f09a507674a30beb5b8a87bb35f;hp=802204f25fda30b22259f685facde794e91adcae;hpb=d87c39464604e74f580c7fae835be31a4c125c36;p=gnulib.git

diff --git a/lib/stripslash.c b/lib/stripslash.c
index 802204f25..0e452a95e 100644
--- a/lib/stripslash.c
+++ b/lib/stripslash.c
@@ -1,10 +1,12 @@
-/* stripslash.c -- remove trailing slashes from a string
-   Copyright (C) 1990 Free Software Foundation, Inc.
+/* stripslash.c -- remove redundant trailing slashes from a file name
 
-   This program is free software; you can redistribute it and/or modify
+   Copyright (C) 1990, 2001, 2003-2006, 2009-2013 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
-
-#if defined(STDC_HEADERS) || defined(USG)
-#include <string.h>
-#else
-#include <strings.h>
-#endif
-
-/* Remove trailing slashes from PATH.
-   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).  */
-
-void
-strip_trailing_slashes (path)
-     char *path;
+   along with this program.  If not, see <http://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)
 {
-  int last;
+  char *base = last_component (file);
+  char *base_lim;
+  bool had_slash;
 
-  last = strlen (path) - 1;
-  while (last > 0 && path[last] == '/')
-    path[last--] = '\0';
+  /* 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;
 }