2013-08-11 11:54:16 +02:00
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/* (C) 2011 Viktor Lofgren
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*
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* This program 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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* any later version.
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*
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* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef GETOPTPP_H
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/* This file contains template voodoo, and due to the unique way GCC handles
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* templates, it needs to be included as a header (and it -is-). Do not attempt to
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* compile this file directly!
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*/
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template<typename T>
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T &ParameterSet::add(char shortName, const char* longName, const char* description) {
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T* p = new T(shortName, longName, description);
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parameters.push_back(p);
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return *p;
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}
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/*
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*
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* Class CommonParameter implementation
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*
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*
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*/
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template<typename SwitchingBehavior>
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CommonParameter<SwitchingBehavior>::~CommonParameter() {}
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template<typename SwitchingBehavior>
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CommonParameter<SwitchingBehavior>::CommonParameter(char shortOption, const char *longOption,
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const char* description) : Parameter(shortOption, longOption, description) {}
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template<typename SwitchingBehavior>
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bool CommonParameter<SwitchingBehavior>::isSet() const{
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return SwitchingBehavior::isSet();
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}
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template<typename SwitchingBehavior>
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std::string CommonParameter<SwitchingBehavior>::usageLine() const {
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std::stringstream strstr;
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2013-08-11 13:13:19 +02:00
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strstr.width(10);
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if (hasShortOption())
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{
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2013-08-11 11:54:16 +02:00
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strstr << std::left<< std::string("-") + shortOption();
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2013-08-11 13:13:19 +02:00
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}
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else
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{
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strstr << " ";
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}
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2013-08-11 11:54:16 +02:00
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strstr.width(20);
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strstr << std::left << "--" + longOption();
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return strstr.str();
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}
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template<typename SwitchingBehavior>
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bool CommonParameter<SwitchingBehavior>::receive(ParserState& state) throw(Parameter::ParameterRejected) {
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const std::string arg = state.get();
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try {
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if(arg.at(0) != '-') return false;
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if(arg.at(1) == '-') { /* Long form parameter */
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try {
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unsigned int eq = arg.find_first_of("=");
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if(eq == std::string::npos) {
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2013-08-11 13:13:19 +02:00
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if(arg.substr(2) != longOption())
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return false;
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2013-08-11 11:54:16 +02:00
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2013-08-11 13:13:19 +02:00
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this->receiveSwitch();
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} else {
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if(arg.substr(2, eq-2) != longOption())
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return false;
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2013-08-11 11:54:16 +02:00
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2013-08-11 13:13:19 +02:00
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this->receiveArgument(arg.substr(eq+1));
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}
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2013-08-11 11:54:16 +02:00
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return true;
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} catch(Parameter::ExpectedArgument &ea) {
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throw ExpectedArgument("--" + longOption() + ": expected an argument");
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} catch(Parameter::UnexpectedArgument &ua) {
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throw UnexpectedArgument("--" + longOption() + ": did not expect an argument");
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} catch(Switchable::SwitchingError &e) {
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throw ParameterRejected("--" + longOption() + ": parameter already set");
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} catch(Parameter::ParameterRejected &pr) {
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std::string what = pr.what();
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if(what.length())
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throw Parameter::ParameterRejected("--" + longOption() + ": " + what);
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throw Parameter::ParameterRejected("--" + longOption() + " (unspecified error)");
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}
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}
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2013-08-11 13:13:19 +02:00
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else if (hasShortOption())
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{
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try {
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if(arg.at(1) == shortOption()) {
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/* Matched argument on the form -f or -fsomething */
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if(arg.length() == 2) { /* -f */
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this->receiveSwitch();
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return true;
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} else { /* -fsomething */
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this->receiveArgument(arg.substr(2));
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return true;
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}
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}
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} catch(Parameter::ExpectedArgument &ea) {
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throw ExpectedArgument(std::string("-") + shortOption() + ": expected an argument");
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} catch(Parameter::UnexpectedArgument &ua) {
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throw UnexpectedArgument(std::string("-") + shortOption() + ": did not expect an argument");
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} catch(Switchable::SwitchingError &e) {
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throw ParameterRejected(std::string("-") + shortOption() + ": parameter already set");
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}
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}
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2013-08-11 11:54:16 +02:00
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} catch(std::out_of_range& o) {
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return false;
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}
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return false;
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}
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/*
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* PODParameter stuff
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*
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*/
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template<typename T>
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PODParameter<T>::PODParameter(char shortOption, const char *longOption,
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const char* description) : CommonParameter<PresettableUniquelySwitchable>(shortOption, longOption, description) {}
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template<typename T>
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PODParameter<T>::~PODParameter() {}
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template<typename T>
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PODParameter<T>::operator T() const { return getValue(); }
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template<typename T>
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void PODParameter<T>::setDefault(T value) {
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PresettableUniquelySwitchable::preset();
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this->value = value;
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}
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template<typename T>
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T PODParameter<T>::getValue() const {
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if(!isSet()) {
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throw runtime_error(
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std::string("Attempting to retreive the argument of parameter") + longOption() + " but it hasn't been set!");
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}
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return value;
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}
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template<typename T>
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std::string PODParameter<T>::usageLine() const {
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std::stringstream strstr;
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2013-08-11 13:13:19 +02:00
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strstr.width(10);
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if (hasShortOption())
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{
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strstr << std::left << std::string("-") + shortOption() +"arg";
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}
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else
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{
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strstr << "";
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}
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2013-08-11 11:54:16 +02:00
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strstr.width(20);
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strstr << std::left << "--" + longOption() + "=arg";
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return strstr.str();
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}
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template<typename T>
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void PODParameter<T>::receiveSwitch() throw (Parameter::ParameterRejected) {
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throw Parameter::ExpectedArgument();
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}
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template<typename T>
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void PODParameter<T>::receiveArgument(const std::string &argument) throw(Parameter::ParameterRejected) {
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set();
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value = this->validate(argument);
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}
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#endif
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