From 3950ffe2a485479f6561c27364d3d7df5a21d124 Mon Sep 17 00:00:00 2001
From: Igor Pashev <pashev.igor@gmail.com>
Date: Sun, 24 Jun 2012 22:28:35 +0000
Subject: Imported Upstream version 93u+

---
 src/lib/libast/comp/dirname.c | 61 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 src/lib/libast/comp/dirname.c

(limited to 'src/lib/libast/comp/dirname.c')

diff --git a/src/lib/libast/comp/dirname.c b/src/lib/libast/comp/dirname.c
new file mode 100644
index 0000000..b03d734
--- /dev/null
+++ b/src/lib/libast/comp/dirname.c
@@ -0,0 +1,61 @@
+/***********************************************************************
+*                                                                      *
+*               This software is part of the ast package               *
+*          Copyright (c) 1985-2011 AT&T Intellectual Property          *
+*                      and is licensed under the                       *
+*                 Eclipse Public License, Version 1.0                  *
+*                    by AT&T Intellectual Property                     *
+*                                                                      *
+*                A copy of the License is available at                 *
+*          http://www.eclipse.org/org/documents/epl-v10.html           *
+*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
+*                                                                      *
+*              Information and Software Systems Research               *
+*                            AT&T Research                             *
+*                           Florham Park NJ                            *
+*                                                                      *
+*                 Glenn Fowler <gsf@research.att.com>                  *
+*                  David Korn <dgk@research.att.com>                   *
+*                   Phong Vo <kpv@research.att.com>                    *
+*                                                                      *
+***********************************************************************/
+#pragma prototyped
+/*
+ * dirname(3) implementation
+ */
+
+#include <ast_std.h>
+
+#if defined(__EXPORT__)
+#define extern	__EXPORT__
+#endif
+
+extern char *dirname(register char *pathname)
+{
+	register char  *last;
+	/* go to end of path */
+	for(last=pathname; *last; last++);
+	/* back over trailing '/' */
+	while(last>pathname && *--last=='/');
+	/* back over non-slash chars */
+	for(;last>pathname && *last!='/';last--);
+	if(last==pathname)
+	{
+		/* all '/' or "" */
+		if(*last!='/')
+			*last = '.';
+		/* preserve // */
+		else if(last[1]=='/')
+			last++;
+	}
+	else
+	{
+		/* back over trailing '/' */
+		for(;*last=='/' && last > pathname; last--);
+		/* preserve // */
+		if(last==pathname && *pathname=='/' && pathname[1]=='/')
+			last++;
+	}
+	*(last + 1) = 0;
+	return(pathname);
+}
-- 
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