/******************************************************************************
*
*  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.
*  All rights reverved.
*
*  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 <string>
#include <vector>

#include "SwitchArg.h"

namespace TCLAP
{

/**
* A multiple switch argument.  If the switch is set on the command line, then
* the getValue method will return the number of times the switch appears.
*/
class MultiSwitchArg : public SwitchArg
{
  protected:

    /**
     * The value of the switch.
     */
    int _value;

    /**
     * Used to support the reset() method so that ValueArg can be
     * reset to their constructed value.
     */
    int _default;

  public:

    /**
     * MultiSwitchArg constructor.
     * \param flag - The one character flag that identifies this
     * argument on the command line.
     * \param name - A one word name for the argument.  Can be
     * used as a long flag on the command line.
     * \param desc - A description of what the argument is for or
     * does.
     * \param init - Optional. The initial/default value of this Arg.
     * Defaults to 0.
     * \param v - An optional visitor.  You probably should not
     * use this unless you have a very good reason.
     */
    MultiSwitchArg(const std::string& flag,
                   const std::string& name,
                   const std::string& desc,
                   int init = 0,
                   Visitor* v = NULL);


    /**
     * MultiSwitchArg constructor.
     * \param flag - The one character flag that identifies this
     * argument on the command line.
     * \param name - A one word name for the argument.  Can be
     * used as a long flag on the command line.
     * \param desc - A description of what the argument is for or
     * does.
     * \param parser - A CmdLine parser object to add this Arg to
     * \param init - Optional. The initial/default value of this Arg.
     * Defaults to 0.
     * \param v - An optional visitor.  You probably should not
     * use this unless you have a very good reason.
     */
    MultiSwitchArg(const std::string& flag,
                   const std::string& name,
                   const std::string& desc,
                   CmdLineInterface& parser,
                   int init = 0,
                   Visitor* v = NULL);


    /**
     * Handles the processing of the argument.
     * This re-implements the SwitchArg version of this method to set the
     * _value of the argument appropriately.
     * \param i - Pointer the the current argument in the list.
     * \param args - Mutable list of strings. Passed
     * in from main().
     */
    virtual bool processArg(int* i, std::vector<std::string>& args);

    /**
     * Returns int, the number of times the switch has been set.
     */
    int getValue();

    /**
     * Returns the shortID for this Arg.
     */
    std::string shortID(const std::string& val) const;

    /**
     * Returns the longID for this Arg.
     */
    std::string longID(const std::string& val) const;

    void reset();

};

//////////////////////////////////////////////////////////////////////
//BEGIN MultiSwitchArg.cpp
//////////////////////////////////////////////////////////////////////
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,
                                      CmdLineInterface& parser,
                                      int init,
                                      Visitor* v )
  : SwitchArg(flag, name, desc, false, v),
    _value( init ),
    _default( init )
{
  parser.add( this );
}

inline int MultiSwitchArg::getValue()
{
  return _value;
}

inline bool MultiSwitchArg::processArg(int *i, std::vector<std::string>& args)
{
  if ( _ignoreable && Arg::ignoreRest() )
    return false;
  if ( argMatches( args[*i] ))
  {
    // so the isSet() method will work
    _alreadySet = true;
    // 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()
{
  MultiSwitchArg::_value = MultiSwitchArg::_default;
}

//////////////////////////////////////////////////////////////////////
//END MultiSwitchArg.cpp
//////////////////////////////////////////////////////////////////////

} //namespace TCLAP

#endif