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#include "CommandLineParser.hpp" |
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#include <cstddef> |
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#include <iomanip> |
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#include <iostream> |
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#include <map> |
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#include <optional> |
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#include <string> |
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#include <tuple> |
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void CommandLineParser::addOption(const std::string &longOpt, const std::string &shortOpt, const std::string &description) |
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{ |
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options[longOpt] = std::make_tuple(shortOpt, description, std::nullopt); |
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} |
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void CommandLineParser::parse() |
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{ |
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for (std::size_t i = 1; i < args.size(); ++i) { |
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if (args[i][0] != '-') |
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continue; |
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std::string option = args[i]; |
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std::string argument; |
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bool optionFound = false; |
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for (const auto &[fst, snd] : options) { |
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if (option == fst || std::get<0>(snd) == option) { |
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option = (fst == option) ? option : (std::get<0>(snd) == option) ? fst : option; |
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if (i + 1 < args.size() && args[i + 1][0] != '-') { |
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argument = args[i + 1]; |
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++i; |
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} |
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optionFound = true; |
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break; |
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} |
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} |
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if (!optionFound) |
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throw std::runtime_error("Unknown option: " + option); |
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options[option] = std::make_tuple(std::get<0>(options[option]), std::get<1>(options[option]), argument); |
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} |
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} |
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[[nodiscard]] std::optional<std::string> CommandLineParser::getOption(const std::string &longOpt) const |
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{ |
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if (options.count(longOpt) == 0) |
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return std::nullopt; |
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return std::get<2>(options.at(longOpt)); |
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} |
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void CommandLineParser::displayHelp(const std::string &binaryName) const |
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std::cout << "Usage: " << binaryName; |
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for (const auto &[fst, snd] : options) { |
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std::string longOpt = fst; |
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std::string shortOpt = std::get<0>(snd); |
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std::string description = std::get<1>(snd); |
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std::cout << " "; |
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if (!shortOpt.empty()) |
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std::cout << std::setw(2) << shortOpt << ", "; |
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std::cout << std::setw(10) << std::left << longOpt << " ["; |
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if (!description.empty()) |
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std::cout << description; |
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std::cout << "]\n"; |
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} |
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} |
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