mirror of
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104 lines
3.2 KiB
C++
104 lines
3.2 KiB
C++
/*
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* OptParser.hpp, part of LatAnalyze
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*
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* Copyright (C) 2016 Antonin Portelli
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*
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* LatAnalyze is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* LatAnalyze is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with LatAnalyze. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef LatAnalyze_OptParser_hpp_
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#define LatAnalyze_OptParser_hpp_
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#include <LatAnalyze/Global.hpp>
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BEGIN_LATAN_NAMESPACE
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/******************************************************************************
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* command-line option parser *
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******************************************************************************/
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class OptParser
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{
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public:
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enum class OptType {value, trigger};
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private:
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struct OptPar
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{
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std::string shortName, longName, defaultVal, helpMessage;
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OptType type;
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bool optional;
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};
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struct OptRes
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{
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std::string value;
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bool present;
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};
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public:
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// constructor
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OptParser(void) = default;
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// destructor
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virtual ~OptParser(void) = default;
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// access
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void addOption(const std::string shortName, const std::string longName,
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const OptType type, const bool optional = false,
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const std::string helpMessage = "",
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const std::string defaultVal = "");
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bool gotOption(const std::string name) const;
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template <typename T = std::string>
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T optionValue(const std::string name) const;
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const std::vector<std::string> & getArgs(void) const;
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// parse
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bool parse(int argc, char *argv[]);
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// print option list
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friend std::ostream & operator<<(std::ostream &out,
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const OptParser &parser);
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private:
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// find option index
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int optIndex(const std::string name) const;
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// option name for messages
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static std::string optName(const OptPar &opt);
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private:
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std::vector<OptPar> opt_;
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std::vector<OptRes> result_;
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std::vector<std::string> arg_;
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static const std::regex optRegex_;
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};
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std::ostream & operator<<(std::ostream &out, const OptParser &parser);
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/******************************************************************************
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* OptParser template implementation *
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******************************************************************************/
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template <typename T>
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T OptParser::optionValue(const std::string name) const
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{
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int i = optIndex(name);
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if (result_.size() != opt_.size())
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{
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throw(std::runtime_error("options not parsed"));
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}
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if (i >= 0)
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{
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return strTo<T>(result_[i].value);
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}
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else
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{
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throw(std::out_of_range("no option with name '" + name + "'"));
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}
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}
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END_LATAN_NAMESPACE
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#endif // LatAnalyze_OptParser_hpp_
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