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qpid/Options.h
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00001 #ifndef QPID_COMMONOPTIONS_H
00002 #define QPID_COMMONOPTIONS_H
00003 
00004 /*
00005  *
00006  * Licensed to the Apache Software Foundation (ASF) under one
00007  * or more contributor license agreements.  See the NOTICE file
00008  * distributed with this work for additional information
00009  * regarding copyright ownership.  The ASF licenses this file
00010  * to you under the Apache License, Version 2.0 (the
00011  * "License"); you may not use this file except in compliance
00012  * with the License.  You may obtain a copy of the License at
00013  *
00014  *   http://www.apache.org/licenses/LICENSE-2.0
00015  *
00016  * Unless required by applicable law or agreed to in writing,
00017  * software distributed under the License is distributed on an
00018  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
00019  * KIND, either express or implied.  See the License for the
00020  * specific language governing permissions and limitations
00021  * under the License.
00022  *
00023  */
00024 
00025 #include "qpid/Exception.h"
00026 
00027 // Disable warnings triggered by boost.
00028 #ifdef _MSC_VER
00029 #  pragma warning(push)
00030 #  pragma warning(disable : 4251 4275)
00031 #endif
00032 
00033 #include <boost/program_options.hpp>
00034 #include <boost/format.hpp>
00035 
00036 #ifdef _MSC_VER
00037 #  pragma warning(pop)
00038 #endif
00039 
00040 #include <sstream>
00041 #include <iterator>
00042 #include <algorithm>
00043 #include <string>
00044 #include "qpid/CommonImportExport.h"
00045 
00046 namespace qpid {
00047 namespace po=boost::program_options;
00048 
00049 
00050 
00052 QPID_COMMON_EXTERN std::string prettyArg(const std::string&, const std::string&);
00053 
00055 template <class T>
00056 class OptionValue : public po::typed_value<T> {
00057   public:
00058     OptionValue(T& value, const std::string& arg)
00059         : po::typed_value<T>(&value), argName(arg) {}
00060     std::string name() const { return argName; }
00061 
00062   private:
00063     std::string argName;
00064 };
00065 
00066 
00073 template<class T>
00074 po::value_semantic* optValue(T& value, const char* name) {
00075     std::string valstr(boost::lexical_cast<std::string>(value));
00076     return new OptionValue<T>(value, prettyArg(name, valstr));
00077 }
00078 
00082 template <class T>
00083 po::value_semantic* optValue(std::vector<T>& value, const char* name) {
00084     using namespace std;
00085     ostringstream os;
00086     copy(value.begin(), value.end(), ostream_iterator<T>(os, " "));
00087     string val=os.str();
00088     if (!val.empty())
00089         val.erase(val.end()-1); // Remove trailing " "
00090     return (new OptionValue<vector<T> >(value, prettyArg(name, val)));
00091 }
00092 
00094 inline po::value_semantic* optValue(bool& value) { return po::bool_switch(&value); }
00095 
00136 struct Options : public po::options_description {
00137 
00138     struct Exception : public qpid::Exception {
00139         Exception(const std::string& msg) : qpid::Exception(msg) {}
00140     };
00141 
00142     QPID_COMMON_EXTERN Options(const std::string& name=std::string());
00143 
00149     QPID_COMMON_EXTERN void parse(int argc, char const* const* argv,
00150                const std::string& configfile=std::string(),
00151                bool  allowUnknown = false);
00152 
00153 
00154   boost::program_options::options_description_easy_init addOptions() {
00155       return add_options();
00156   }
00157 };
00158 
00159 
00160 
00164 struct CommonOptions : public Options {
00165     QPID_COMMON_EXTERN CommonOptions(const std::string& name=std::string(),
00166                   const std::string& configfile=std::string());
00167     bool help;
00168     bool version;
00169     std::string config;
00170 };
00171 
00172 
00173 
00174 
00175 } // namespace qpid
00176 
00177 #endif  

Qpid C++ API Reference
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