NEWS.stable: log cherry-pick [e446f25]->[c092018] relocatable-shell: Update suggested...

[gnulib.git] / lib / basename.c

diff --git a/lib/basename.c b/lib/basename.c
index 8c3dbec..67d9420 100644 (file)
--- a/lib/basename.c
+++ b/lib/basename.c
@@ -1,12 +1,12 @@
 /* basename.c -- return the last element in a file name
 
-   Copyright (C) 1990, 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006 Free
-   Software Foundation, Inc.
+   Copyright (C) 1990, 1998-2001, 2003-2006, 2009-2014 Free Software
+   Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   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
@@ -14,12 +14,9 @@
    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/>.  */
 
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
+#include <config.h>
 
 #include "dirname.h"
 
@@ -27,52 +24,6 @@
 #include "xalloc.h"
 #include "xstrndup.h"
 
-/* Return the address of the last file name component of NAME.  If
-   NAME has no relative file name components because it is a file
-   system root, return the empty string.  */
-
-char *
-last_component (char const *name)
-{
-  char const *base = name + FILE_SYSTEM_PREFIX_LEN (name);
-  char const *p;
-  bool saw_slash = false;
-
-  while (ISSLASH (*base))
-    base++;
-
-  for (p = base; *p; p++)
-    {
-      if (ISSLASH (*p))
-       saw_slash = true;
-      else if (saw_slash)
-       {
-         base = p;
-         saw_slash = false;
-       }
-    }
-
-  return (char *) base;
-}
-
-
-/* In general, we can't use the builtin `basename' function if available,
-   since it has different meanings in different environments.
-   In some environments the builtin `basename' modifies its argument.
-
-   Return the last file name component of NAME, allocated with
-   xmalloc.  On systems with drive letters, a leading "./"
-   distinguishes relative names that would otherwise look like a drive
-   letter.  Unlike POSIX basename(), NAME cannot be NULL,
-   base_name("") returns "", and the first trailing slash is not
-   stripped.
-
-   If lstat (NAME) would succeed, then { chdir (dir_name (NAME));
-   lstat (base_name (NAME)); } will access the same file.  Likewise,
-   if the sequence { chdir (dir_name (NAME));
-   rename (base_name (NAME), "foo"); } succeeds, you have renamed NAME
-   to "foo" in the same directory NAME was in.  */
-
 char *
 base_name (char const *name)
 {
@@ -89,8 +40,8 @@ base_name (char const *name)
   if (ISSLASH (base[length]))
     length++;
 
-  /* On systems with drive letters, `a/b:c' must return `./b:c' rather
-     than `b:c' to avoid confusion with a drive letter.  On systems
+  /* On systems with drive letters, "a/b:c" must return "./b:c" rather
+     than "b:c" to avoid confusion with a drive letter.  On systems
      with pure POSIX semantics, this is not an issue.  */
   if (FILE_SYSTEM_PREFIX_LEN (base))
     {
@@ -105,27 +56,3 @@ base_name (char const *name)
   /* Finally, copy the basename.  */
   return xstrndup (base, length);
 }
-
-/* Return the length of the basename NAME.  Typically NAME is the
-   value returned by base_name or last_component.  Act like strlen
-   (NAME), except omit all trailing slashes.  */
-
-size_t
-base_len (char const *name)
-{
-  size_t len;
-  size_t prefix_len = FILE_SYSTEM_PREFIX_LEN (name);
-
-  for (len = strlen (name);  1 < len && ISSLASH (name[len - 1]);  len--)
-    continue;
-
-  if (DOUBLE_SLASH_IS_DISTINCT_ROOT && len == 1
-      && ISSLASH (name[0]) && ISSLASH (name[1]) && ! name[2])
-    return 2;
-
-  if (FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE && prefix_len
-      && len == prefix_len && ISSLASH (name[prefix_len]))
-    return prefix_len + 1;
-
-  return len;
-}