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/*
*
* Copyright (c) 2006 The Apache Software Foundation
*
* Licensed 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 "CommonOptions.h"
#include <fstream>
#include <algorithm>
namespace qpid {
namespace program_options {
char env2optchar(char env) {
return (env=='_') ? '-' : tolower(env);
}
const std::string envPrefix("QPID_");
std::string env2option(const std::string& env) {
if (env.find(envPrefix) ==0) {
std::string opt = env.substr(envPrefix.size());
std::transform(opt.begin(), opt.end(), opt.begin(), env2optchar);
return opt;
}
return std::string();
}
} // namespace program_options
const int CommonOptions::DEFAULT_PORT=5672;
CommonOptions::CommonOptions() : trace(false), port(DEFAULT_PORT) {}
void CommonOptions::addTo(po::options_description& desc)
{
using namespace po;
desc.add_options()
("trace,t", optValue(trace), "Enable debug tracing" )
("port,p", optValue(port,"PORT"), "Use PORT for AMQP connections.");
}
void parseOptions(
po::options_description& desc, int argc, char** argv,
const std::string& configFile)
{
po::variables_map vm;
po::store(po::parse_command_line(argc, argv, desc), vm);
try {
po::store(po::parse_environment(desc, po::env2option), vm);
}
catch (const po::error& e) {
throw po::error(std::string("parsing environment variables: ")
+ e.what());
}
po::notify(vm); // So we can use the value of config.
try {
std::ifstream conf(configFile.c_str());
po::store(po::parse_config_file(conf, desc), vm);
}
catch (const po::error& e) {
throw po::error(std::string("parsing config file: ")+ e.what());
}
po::notify(vm);
}
} // namespace qpid
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