MultiSwitchArg.h

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// -*- Mode: c++; c-basic-offset: 4; tab-width: 4; -*-
 
/******************************************************************************
 *
 *  file:  MultiSwitchArg.h
 *
 *  Copyright (c) 2003, Michael E. Smoot .
 *  Copyright (c) 2004, Michael E. Smoot, Daniel Aarno.
 *  Copyright (c) 2005, Michael E. Smoot, Daniel Aarno, Erik Zeek.
 *  Copyright (c) 2017, Google LLC
 *  All rights reserved.
 *
 *  See the file COPYING in the top directory of this distribution for
 *  more information.
 *
 *  THE SOFTWARE IS PROVIDED _AS IS_, WITHOUT WARRANTY OF ANY KIND, EXPRESS
 *  OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 *  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 *  DEALINGS IN THE SOFTWARE.
 *
 *****************************************************************************/
 
#ifndef TCLAP_MULTI_SWITCH_ARG_H
#define TCLAP_MULTI_SWITCH_ARG_H
 
#include <tclap/SwitchArg.h>
 
#include <string>
#include <vector>
 
namespace TCLAP {
 
class MultiSwitchArg : public SwitchArg {
protected:
    int _value;
 
    int _default;
 
public:
    MultiSwitchArg(const std::string &flag, const std::string &name,
                   const std::string &desc, int init = 0, Visitor *v = NULL);
 
    MultiSwitchArg(const std::string &flag, const std::string &name,
                   const std::string &desc, ArgContainer &parser, int init = 0,
                   Visitor *v = NULL);
 
    virtual bool processArg(int *i, std::vector<std::string> &args);
 
    int getValue() const { return _value; }
 
    operator bool() const { return _value != 0; }
 
    std::string shortID(const std::string &val) const;
 
    std::string longID(const std::string &val) const;
 
    void reset();
};
 
inline MultiSwitchArg::MultiSwitchArg(const std::string &flag,
                                      const std::string &name,
                                      const std::string &desc, int init,
                                      Visitor *v)
    : SwitchArg(flag, name, desc, false, v), _value(init), _default(init) {}
 
inline MultiSwitchArg::MultiSwitchArg(const std::string &flag,
                                      const std::string &name,
                                      const std::string &desc,
                                      ArgContainer &parser, int init,
                                      Visitor *v)
    : SwitchArg(flag, name, desc, false, v), _value(init), _default(init) {
    parser.add(this);
}
 
inline bool MultiSwitchArg::processArg(int *i, std::vector<std::string> &args) {
    if (argMatches(args[*i])) {
        // so the isSet() method will work
        _alreadySet = true;
        _setBy = args[*i];
 
        // Matched argument: increment value.
        ++_value;
 
        _checkWithVisitor();
 
        return true;
    } else if (combinedSwitchesMatch(args[*i])) {
        // so the isSet() method will work
        _alreadySet = true;
 
        // Matched argument: increment value.
        ++_value;
 
        // Check for more in argument and increment value.
        while (combinedSwitchesMatch(args[*i])) ++_value;
 
        _checkWithVisitor();
 
        return false;
    } else {
        return false;
    }
}
 
inline std::string MultiSwitchArg::shortID(const std::string &val) const {
    return Arg::shortID(val) + " ...";
}
 
inline std::string MultiSwitchArg::longID(const std::string &val) const {
    return Arg::longID(val) + "  (accepted multiple times)";
}
 
inline void MultiSwitchArg::reset() {
    Arg::reset();
    MultiSwitchArg::_value = MultiSwitchArg::_default;
}
 
}  // namespace TCLAP
 
#endif  // TCLAP_MULTI_SWITCH_ARG_H