init repo.

third_party/curl/lib/curl_memrchr.c

@@ -0,0 +1,64 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 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 https://curl.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.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+
+#include "curl_setup.h"
+
+#include <curl/curl.h>
+
+#include "curl_memrchr.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)
+{
+  if(n > 0) {
+    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 */