anthem/app/main.cpp

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#include <iostream>
#include <boost/program_options.hpp>
#include <anthem/Context.h>
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#include <anthem/Translation.h>
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int main(int argc, char **argv)
{
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anthem::Context context;
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namespace po = boost::program_options;
po::options_description description("Allowed options");
description.add_options()
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("help,h", "Display this help message")
("version,v", "Display version information")
("input,i", po::value<std::vector<std::string>>(), "Input files")
("simplify,s", po::bool_switch(&context.simplify), "Simplify the output")
("complete,c", po::bool_switch(&context.complete), "Perform completion")
("color", po::value<std::string>()->default_value("auto"), "Colorize output (always, never, auto)")
("log-priority,p", po::value<std::string>()->default_value("warning"), "Log messages starting from this priority (debug, info, warning, error)");
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po::positional_options_description positionalOptionsDescription;
positionalOptionsDescription.add("input", -1);
po::variables_map variablesMap;
const auto printHelp =
[&]()
{
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std::cout
<< "Usage: anthem [options] file..." << std::endl
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<< "Translate ASP programs to the language of first-order theorem provers." << std::endl << std::endl
<< description;
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};
try
{
po::store(po::command_line_parser(argc, argv)
.options(description)
.positional(positionalOptionsDescription)
.run(),
variablesMap);
po::notify(variablesMap);
}
catch (const po::error &e)
{
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context.logger.log(anthem::output::Priority::Error, e.what());
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printHelp();
return EXIT_FAILURE;
}
if (variablesMap.count("help"))
{
printHelp();
return EXIT_SUCCESS;
}
if (variablesMap.count("version"))
{
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std::cout << "anthem version 0.1.4-git" << std::endl;
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return EXIT_SUCCESS;
}
const auto colorPolicyString = variablesMap["color"].as<std::string>();
if (colorPolicyString == "auto")
context.logger.setColorPolicy(anthem::output::ColorStream::ColorPolicy::Auto);
else if (colorPolicyString == "never")
context.logger.setColorPolicy(anthem::output::ColorStream::ColorPolicy::Never);
else if (colorPolicyString == "always")
context.logger.setColorPolicy(anthem::output::ColorStream::ColorPolicy::Always);
else
{
context.logger.log(anthem::output::Priority::Error, ("unknown color policy “" + colorPolicyString + "").c_str());
context.logger.errorStream() << std::endl;
printHelp();
return EXIT_FAILURE;
}
const auto logPriorityString = variablesMap["log-priority"].as<std::string>();
try
{
const auto logPriority = anthem::output::priorityFromName(logPriorityString.c_str());
context.logger.setLogPriority(logPriority);
}
catch (const std::exception &e)
{
context.logger.log(anthem::output::Priority::Error, ("unknown log priorty “" + logPriorityString + "").c_str());
context.logger.errorStream() << std::endl;
printHelp();
return EXIT_FAILURE;
}
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try
{
if (variablesMap.count("input"))
{
const auto &inputFiles = variablesMap["input"].as<std::vector<std::string>>();
anthem::translate(inputFiles, context);
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}
else
anthem::translate("std::cin", std::cin, context);
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}
catch (const std::exception &e)
{
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context.logger.log(anthem::output::Priority::Error, e.what());
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return EXIT_FAILURE;
}
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return EXIT_SUCCESS;
}