Creating a branch for experimenting with some ideas for JMS client.rajith_jms_client

git-svn-id: https://svn.apache.org/repos/asf/qpid/branches/rajith_jms_client@1128369 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 97 insertions, 0 deletions

diff --git a/qpid/cpp/src/qpid/Modules.cpp b/qpid/cpp/src/qpid/Modules.cpp
new file mode 100644
index 0000000000..727e05d212
--- /dev/null
+++ b/qpid/cpp/src/qpid/Modules.cpp
@@ -0,0 +1,97 @@
+/*
+ *
+ * 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 "config.h"
+#include "qpid/Modules.h"
+#include "qpid/Exception.h"
+#include "qpid/log/Statement.h"
+#include "qpid/sys/Shlib.h"
+
+#include <boost/filesystem/operations.hpp>
+#include <boost/filesystem/path.hpp>
+
+namespace fs=boost::filesystem;
+
+namespace {
+
+// CMake sets QPID_MODULE_SUFFIX; Autoconf doesn't, so assume Linux .so
+#ifndef QPID_MODULE_SUFFIX
+#define QPID_MODULE_SUFFIX ".so"
+#endif
+
+inline std::string& suffix() {
+    static std::string s(QPID_MODULE_SUFFIX);
+    return s;
+}
+
+bool isShlibName(const std::string& name) {
+    return name.find (suffix()) == name.length() - suffix().length();
+}
+
+}
+
+namespace qpid {
+
+ModuleOptions::ModuleOptions(const std::string& defaultModuleDir)
+    : qpid::Options("Module options"), loadDir(defaultModuleDir), noLoad(false)
+{
+    addOptions()
+        ("module-dir",    optValue(loadDir, "DIR"),  "Load all shareable modules in this directory")
+        ("load-module",   optValue(load,    "FILE"), "Specifies additional module(s) to be loaded")
+        ("no-module-dir", optValue(noLoad),          "Don't load modules from module directory");
+}
+
+void tryShlib(const char* libname_, bool noThrow) {
+    std::string libname(libname_);
+    if (!isShlibName(libname)) libname += suffix();
+    try {
+        sys::Shlib shlib(libname);
+    }
+    catch (const std::exception& /*e*/) {
+        if (!noThrow)
+            throw;
+    }
+}
+
+void loadModuleDir (std::string dirname, bool isDefault)
+{
+    fs::path dirPath (dirname, fs::native);
+
+    if (!fs::exists (dirPath))
+    {
+        if (isDefault)
+            return;
+        throw Exception ("Directory not found: " + dirname);
+    }
+    if (!fs::is_directory(dirPath))
+    {
+        throw Exception ("Invalid value for module-dir: " + dirname + " is not a directory");
+    }
+
+    fs::directory_iterator endItr;
+    for (fs::directory_iterator itr (dirPath); itr != endItr; ++itr)
+    {
+        if (!fs::is_directory(*itr) && isShlibName(itr->string()))
+            tryShlib (itr->string().data(), true);
+    }
+}
+
+} // namespace qpid