87 lines
2.4 KiB
C++
87 lines
2.4 KiB
C++
// Copyright Vladimir Prus 2002-2004.
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt
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// or copy at http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/program_options.hpp>
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using namespace boost;
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namespace po = boost::program_options;
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#include <iostream>
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#include <algorithm>
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#include <iterator>
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using namespace std;
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// A helper function to simplify the main part.
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template<class T>
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ostream& operator<<(ostream& os, const vector<T>& v)
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{
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copy(v.begin(), v.end(), ostream_iterator<T>(os, " "));
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return os;
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}
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int main(int ac, char* av[])
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{
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try {
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int opt;
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int portnum;
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po::options_description desc("Allowed options");
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desc.add_options()
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("help", "produce help message")
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("optimization", po::value<int>(&opt)->default_value(10),
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"optimization level")
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("verbose,v", po::value<int>()->implicit_value(1),
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"enable verbosity (optionally specify level)")
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("listen,l", po::value<int>(&portnum)->implicit_value(1001)
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->default_value(0,"no"),
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"listen on a port.")
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("include-path,I", po::value< vector<string> >(),
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"include path")
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("input-file", po::value< vector<string> >(), "input file")
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;
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po::positional_options_description p;
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p.add("input-file", -1);
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po::variables_map vm;
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po::store(po::command_line_parser(ac, av).
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options(desc).positional(p).run(), vm);
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po::notify(vm);
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if (vm.count("help")) {
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cout << "Usage: options_description [options]\n";
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cout << desc;
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return 0;
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}
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if (vm.count("include-path"))
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{
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cout << "Include paths are: "
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<< vm["include-path"].as< vector<string> >() << "\n";
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}
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if (vm.count("input-file"))
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{
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cout << "Input files are: "
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<< vm["input-file"].as< vector<string> >() << "\n";
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}
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if (vm.count("verbose")) {
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cout << "Verbosity enabled. Level is " << vm["verbose"].as<int>()
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<< "\n";
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}
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cout << "Optimization level is " << opt << "\n";
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cout << "Listen port is " << portnum << "\n";
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}
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catch(std::exception& e)
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{
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cout << e.what() << "\n";
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return 1;
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}
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return 0;
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}
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