Initial revision

1 files changed, 64 insertions, 0 deletions

diff --git a/lib/dirname.c b/lib/dirname.c
new file mode 100644
index 000000000..82deea7b4
--- /dev/null
+++ b/lib/dirname.c
@@ -0,0 +1,64 @@
+/* dirname.c -- return all but the last element in a path
+   Copyright (C) 1990 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.
+
+   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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#ifdef STDC_HEADERS
+#include <stdlib.h>
+#else
+char *malloc ();
+#endif
+#if defined(USG) || defined(STDC_HEADERS)
+#include <string.h>
+#define rindex strrchr
+#else
+#include <strings.h>
+#endif
+
+/* 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;
+{
+  char *newpath;
+  char *slash;
+  int length;			/* Length of result, not including NUL.  */
+
+  slash = rindex (path, '/');
+  if (slash == 0)
+    {
+      /* File is in the current directory.  */
+      path = ".";
+      length = 1;
+    }
+  else
+    {
+      /* Remove any trailing slashes from the result.  */
+      while (slash > path && *slash == '/')
+	--slash;
+
+      length = slash - path + 1;
+    }
+  newpath = malloc (length + 1);
+  if (newpath == 0)
+    return 0;
+  strncpy (newpath, path, length);
+  newpath[length] = 0;
+  return newpath;
+}