add sofia-sip 1.12.4 (plus some patches through 12/21/2006) to in tree libs

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@3774 d0543943-73ff-0310-b7d9-9358b9ac24b2

libs/sofia-sip/libsofia-sip-ua/msg/sofia-sip/msg_mclass_hash.h

@@ -0,0 +1,77 @@
+/*
+ * This file is part of the Sofia-SIP package
+ *
+ * Copyright (C) 2005 Nokia Corporation.
+ *
+ * Contact: Pekka Pessi <pekka.pessi@nokia.com>
+ *
+ * This library 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 of
+ * the License, or (at your option) any later version.
+ *
+ * This library 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 library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#ifndef MSG_MCLASS_HASH_H
+/** Defined when <sofia-sip/msg_mclass_hash.h> has been included. */
+#define MSG_MCLASS_HASH_H 
+
+/**@ingroup msg_parser
+ * @file sofia-sip/msg_mclass_hash.h
+ *
+ * Hash function for header names.
+ *
+ * @author Pekka Pessi <Pekka.Pessi@nokia.com>
+ *
+ * @date Created: Tue Aug 21 16:03:45 2001 ppessi
+ * 
+ */
+
+#include <sofia-sip/su_config.h>
+
+#ifndef BNF_H
+#include <sofia-sip/bnf.h>
+#endif
+
+SOFIA_BEGIN_DECLS
+
+/** Hash the header name */
+#define MC_HASH(s, n)     (msg_header_name_hash(s, NULL) % (unsigned)(n))
+
+/** Hash header name */
+static inline 
+unsigned short msg_header_name_hash(char const *s, isize_t *llen)
+{
+  unsigned short hash = 0;
+  size_t i;
+
+  for (i = 0; s[i]; i++) {
+    unsigned char c = s[i];
+    if (!(_bnf_table[c] & bnf_token))
+      break;
+    if (c >= 'A' && c <= 'Z')
+      hash += (c + 'a' - 'A');
+    else
+      hash += c;
+    hash *= 38501U;
+  }
+
+  if (llen)
+    *llen = i;
+
+  return hash;
+}
+
+SOFIA_END_DECLS
+
+#endif /** MSG_MCLASS_HASH_H */