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[GNUnet-SVN] r7643 - libmicrohttpd/src/daemon/https/lgl
From: |
gnunet |
Subject: |
[GNUnet-SVN] r7643 - libmicrohttpd/src/daemon/https/lgl |
Date: |
Fri, 29 Aug 2008 23:07:59 -0600 (MDT) |
Author: grothoff
Date: 2008-08-29 23:07:59 -0600 (Fri, 29 Aug 2008)
New Revision: 7643
Added:
libmicrohttpd/src/daemon/https/lgl/memmem.c
Log:
ac
Added: libmicrohttpd/src/daemon/https/lgl/memmem.c
===================================================================
--- libmicrohttpd/src/daemon/https/lgl/memmem.c (rev 0)
+++ libmicrohttpd/src/daemon/https/lgl/memmem.c 2008-08-30 05:07:59 UTC (rev
7643)
@@ -0,0 +1,61 @@
+/* Copyright (C) 1991,92,93,94,96,97,98,2000,2004,2007 Free Software
Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1, 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 Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License along
+ with this program; if not, write to the Free Software Foundation,
+ Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#ifndef _LIBC
+#include "MHD_config.h"
+#endif
+
+#include <stddef.h>
+#include <string.h>
+
+#ifndef _LIBC
+# define __builtin_expect(expr, val) (expr)
+#endif
+
+#undef memmem
+
+/* Return the first occurrence of NEEDLE in HAYSTACK. */
+void *
+memmem (haystack, haystack_len, needle, needle_len)
+ const void *haystack;
+ size_t haystack_len;
+ const void *needle;
+ size_t needle_len;
+{
+ const char *begin;
+ const char *const last_possible = (const char *) haystack + haystack_len
+ - needle_len;
+
+ if (needle_len == 0)
+ /* The first occurrence of the empty string is deemed to occur at
+ the beginning of the string. */
+ return (void *) haystack;
+
+ /* Sanity check, otherwise the loop might search through the whole
+ memory. */
+ if (__builtin_expect (haystack_len < needle_len, 0))
+ return NULL;
+
+ for (begin = (const char *) haystack; begin <= last_possible; ++begin)
+ if (begin[0] == ((const char *) needle)[0]
+ && !memcmp ((const void *) &begin[1],
+ (const void *) ((const char *) needle + 1),
+ needle_len - 1))
+ return (void *) begin;
+
+ return NULL;
+}
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