1 files changed, 55 insertions, 0 deletions
diff --git a/cpp/src/qpid/Msg.cpp b/cpp/src/qpid/Msg.cpp
new file mode 100644
index 0000000000..d441cdd180
--- /dev/null
+++ b/cpp/src/qpid/Msg.cpp
@@ -0,0 +1,55 @@
+/*
+ *
+ * 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 "qpid/Msg.h"
+#include <string>
+
+namespace qpid {
+using namespace std;
+
+struct NonPrint { bool operator()(unsigned char c) { return !isprint(c) && !isspace(c); } };
+
+const char hex[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
+
+std::string quote(const std::string& str) {
+    NonPrint nonPrint;
+    size_t n = std::count_if(str.begin(), str.end(), nonPrint);
+    if (n==0) return str;
+    std::string ret;
+    ret.reserve(str.size()+2*n); // Avoid extra allocations.
+    for (string::const_iterator i = str.begin(); i != str.end(); ++i) {
+        if (nonPrint(*i)) {
+            ret.push_back('\\');
+            ret.push_back('x');
+            ret.push_back(hex[((*i) >> 4)&0xf]);
+            ret.push_back(hex[(*i) & 0xf]);
+        }
+        else ret.push_back(*i);
+    }
+    return ret;
+}
+
+// Quote the string so messages with null characters are preserved, e.g. messages with XIDs */
+std::string Msg::str() const {
+    return quote(os.str());
+}
+
+} // namespace qpid