From 7d22ce5573952dec6e3fa724d5e6f071cf8947ff Mon Sep 17 00:00:00 2001
From: Yang Tse <yangsita@gmail.com>
Date: Mon, 28 Sep 2009 16:05:20 +0000
Subject: libcurl private function Curl_memrchr() now in curl_memrchr.c and
 curl_memrchr.h

---
 lib/curl_memrchr.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 lib/curl_memrchr.c

(limited to 'lib/curl_memrchr.c')

diff --git a/lib/curl_memrchr.c b/lib/curl_memrchr.c
new file mode 100644
index 000000000..7ba16f3bc
--- /dev/null
+++ b/lib/curl_memrchr.c
@@ -0,0 +1,63 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2009, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * $Id$
+ ***************************************************************************/
+
+#include "setup.h"
+
+#include "curl_memrchr.h"
+
+#define _MPRINTF_REPLACE /* use our functions only */
+#include <curl/mprintf.h>
+
+#include "curl_memory.h"
+/* The last #include file should be: */
+#include "memdebug.h"
+
+#ifndef HAVE_MEMRCHR
+
+/*
+ * Curl_memrchr()
+ *
+ * Our memrchr() function clone for systems which lack this function. The
+ * memrchr() function is like the memchr() function, except that it searches
+ * backwards from the end of the n bytes pointed to by s instead of forward
+ * from the beginning.
+ */
+
+void *
+Curl_memrchr(const void *s, int c, size_t n)
+{
+  const unsigned char *p = s;
+  const unsigned char *q = s;
+
+  p += n - 1;
+
+  while (p >= q) {
+    if (*p == (unsigned char)c)
+      return (void *)p;
+    p--;
+  }
+
+  return NULL;
+}
+
+#endif /* HAVE_MEMRCHR */
-- 
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