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-rw-r--r--src/dirname.c70
1 files changed, 70 insertions, 0 deletions
diff --git a/src/dirname.c b/src/dirname.c
new file mode 100644
index 0000000..7c11c76
--- /dev/null
+++ b/src/dirname.c
@@ -0,0 +1,70 @@
+/* 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.,
+ 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#ifdef STDC_HEADERS
+#include <stdlib.h>
+#else
+char *malloc ();
+#endif
+#if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
+#include <string.h>
+#else
+#include <strings.h>
+#ifndef strrchr
+#define strrchr rindex
+#endif
+#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 = strrchr (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 = (char *) malloc (length + 1);
+ if (newpath == 0)
+ return 0;
+ strncpy (newpath, path, length);
+ newpath[length] = 0;
+ return newpath;
+}

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