1 files changed, 60 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/cluster/MemberSet.cpp b/qpid/cpp/src/qpid/cluster/MemberSet.cpp
new file mode 100644
index 0000000000..97748947b3
--- /dev/null
+++ b/qpid/cpp/src/qpid/cluster/MemberSet.cpp
@@ -0,0 +1,60 @@
+/*
+ *
+ * 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 "MemberSet.h"
+#include <ostream>
+#include <iterator>
+#include <algorithm>
+
+namespace qpid {
+namespace cluster {
+
+std::string encodeMemberSet(const MemberSet& m) {
+    std::string addresses;
+    for (MemberSet::const_iterator i = m.begin(); i != m.end(); ++i)
+        addresses.append(i->str());
+    return addresses;
+}
+
+MemberSet decodeMemberSet(const std::string& s) {
+    MemberSet set;
+    for (std::string::const_iterator i = s.begin(); i < s.end(); i += 8) {
+        assert(size_t(i-s.begin())+8 <= s.size());
+        set.insert(MemberId(std::string(i, i+8)));
+    }
+    return set;
+}
+
+MemberSet intersection(const MemberSet& a, const MemberSet& b)
+{
+    MemberSet intersection;
+    std::set_intersection(a.begin(), a.end(),
+                          b.begin(), b.end(),
+                          std::inserter(intersection, intersection.begin()));
+    return intersection;
+
+}
+
+std::ostream& operator<<(std::ostream& o, const MemberSet& ms) {
+    copy(ms.begin(), ms.end(), std::ostream_iterator<MemberId>(o, " "));
+    return o;
+}
+
+}} // namespace qpid::cluster