[HAVE_LIMITS_H]: Include limits.h before regex.h to avoid

[gnulib.git] / lib / dirname.c

diff --git a/lib/dirname.c b/lib/dirname.c
index 9290614..cf62de7 100644 (file)
--- a/lib/dirname.c
+++ b/lib/dirname.c
@@ -1,5 +1,5 @@
 /* dirname.c -- return all but the last element in a path
-   Copyright (C) 1990 Free Software Foundation, Inc.
+   Copyright (C) 1990, 1998 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
@@ -12,41 +12,42 @@
    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.  */
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
-#ifdef HAVE_CONFIG_H
-#include <config.h>
+#if HAVE_CONFIG_H
+# include <config.h>
 #endif
 
 #ifdef STDC_HEADERS
-#include <stdlib.h>
+# include <stdlib.h>
 #else
 char *malloc ();
 #endif
-#if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
-#include <string.h>
-#ifndef rindex
-#define rindex strrchr
-#endif
+#if defined STDC_HEADERS || defined HAVE_STRING_H
+# include <string.h>
 #else
-#include <strings.h>
+# include <strings.h>
+# ifndef strrchr
+#  define strrchr rindex
+# endif
 #endif
 
+#include "dirname.h"
+
 /* Return the leading directories part of PATH,
    allocated with malloc.  If out of memory, return 0.
    Assumes that trailing slashes have already been
    removed.  */
 
 char *
-dirname (path)
-     char *path;
+dir_name (const char *path)
 {
   char *newpath;
   char *slash;
   int length;                  /* Length of result, not including NUL.  */
 
-  slash = rindex (path, '/');
+  slash = strrchr (path, '/');
   if (slash == 0)
     {
       /* File is in the current directory.  */
@@ -56,12 +57,21 @@ dirname (path)
   else
     {
       /* Remove any trailing slashes from the result.  */
+#ifdef MSDOS
+      char *lim = (path[0] >= 'A' && path[0] <= 'z' && path[1] == ':')
+                 ? path + 2 : path;
+
+      /* If canonicalized "d:/path", leave alone the root case "d:/".  */
+      while (slash > lim && *slash == '/')
+       --slash;
+#else
       while (slash > path && *slash == '/')
        --slash;
+#endif
 
       length = slash - path + 1;
     }
-  newpath = malloc (length + 1);
+  newpath = (char *) malloc (length + 1);
   if (newpath == 0)
     return 0;
   strncpy (newpath, path, length);