QPID-2792 - QMF Clients in C++ following the ABI-stable pattern of the new messaging API

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@985016 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 45 insertions, 0 deletions

diff --git a/cpp/src/qmf/Hash.cpp b/cpp/src/qmf/Hash.cpp
new file mode 100644
index 0000000000..86738dda2f
--- /dev/null
+++ b/cpp/src/qmf/Hash.cpp
@@ -0,0 +1,45 @@
+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+
+#include "qmf/Hash.h"
+
+using namespace qmf;
+
+Hash::Hash()
+{
+    data[0] = 0x5A5A5A5A5A5A5A5ALL;
+    data[1] = 0x5A5A5A5A5A5A5A5ALL;
+}
+
+void Hash::update(const char* s, uint32_t len)
+{
+    uint64_t* first  = &data[0];
+    uint64_t* second = &data[1];
+
+    for (uint32_t idx = 0; idx < len; idx++) {
+        uint64_t recycle = ((*second & 0xff00000000000000LL) >> 56);
+        *second = *second << 8;
+        *second |= ((*first & 0xFF00000000000000LL) >> 56);
+        *first = *first << 8;
+        *first = *first + (uint64_t) s[idx] + recycle;
+    }
+}
+