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Methods to print out boost::program_options objects (C++11)
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#include <string.h> | |
#include <iostream> | |
#include "boost/program_options.hpp" | |
#include "boost/filesystem.hpp" | |
#include "boost/any.hpp" | |
namespace po = boost::program_options; | |
inline void PrintUsage(const boost::program_options::options_description desc) { | |
std::cout << "Usage: " << app_name << " [options]" << std::endl; | |
std::cout << " App description" << std::endl; | |
std::cout << desc << std::endl; | |
std::cout << std::endl << "v" << VERSION << std::endl; | |
} | |
inline void PrintVariableMap(const boost::program_options::variables_map vm) { | |
for (auto it : vm) { | |
std::cout << "> " << it.first; | |
if (((boost::any)it.second.value()).empty()) { | |
std::cout << "(empty)"; | |
} | |
if (vm[it.first].defaulted() || it.second.defaulted()) { | |
std::cout << "(default)"; | |
} | |
std::cout << "="; | |
bool is_char; | |
try { | |
boost::any_cast<const char *>(it.second.value()); | |
is_char = true; | |
} catch (const boost::bad_any_cast &) { | |
is_char = false; | |
} | |
bool is_str; | |
try { | |
boost::any_cast<std::string>(it.second.value()); | |
is_str = true; | |
} catch (const boost::bad_any_cast &) { | |
is_str = false; | |
} | |
if (((boost::any)it.second.value()).type() == typeid(int)) { | |
std::cout << vm[it.first].as<int>() << std::endl; | |
} else if (((boost::any)it.second.value()).type() == typeid(long)) { | |
std::cout << vm[it.first].as<long>() << std::endl; | |
} else if (((boost::any)it.second.value()).type() == typeid(bool)) { | |
std::cout << vm[it.first].as<bool>() << std::endl; | |
} else if (((boost::any)it.second.value()).type() == typeid(double)) { | |
std::cout << vm[it.first].as<double>() << std::endl; | |
} else if (((boost::any)it.second.value()).type() == typeid(float)) { | |
std::cout << vm[it.first].as<float>() << std::endl; | |
} else if (is_char) { | |
std::cout << vm[it.first].as<const char * >() << std::endl; | |
} else if (is_str) { | |
std::string temp = vm[it.first].as<std::string>(); | |
if (temp.size()) { | |
std::cout << temp << std::endl; | |
} else { | |
std::cout << "true" << std::endl; | |
} | |
} else { // Assumes that the only remainder is vector<string> | |
try { | |
std::vector<std::string> vect = vm[it.first].as<std::vector<std::string> >(); | |
auto i = 0; | |
for (std::vector<std::string>::iterator oit=vect.begin(); | |
oit != vect.end(); oit++, ++i) { | |
std::cout << "\r> " << it.first << "[" << i << "]=" << (*oit) << std::endl; | |
} | |
} catch (const boost::bad_any_cast &) { | |
std::cout << "UnknownType(" << ((boost::any)it.second.value()).type().name() << ")" << std::endl; | |
} | |
} | |
} | |
} |
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