/******************************************************************************
 *
 *  file:  UnlabeledMultiArg.h
 *
 *  Copyright (c) 2003, Michael E. Smoot.
 *  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_MULTIPLE_UNLABELED_ARGUMENT_H
#define TCLAP_MULTIPLE_UNLABELED_ARGUMENT_H

#include <string>
#include <vector>

#include "MultiArg.h"
#include "OptionalUnlabeledTracker.h"

namespace TCLAP
{

/**
 * Just like a MultiArg, except that the arguments are unlabeled.  Basically,
 * this Arg will slurp up everything that hasn't been matched to another
 * Arg.
 */
template<class T>
class UnlabeledMultiArg : public MultiArg<T>
{

    // If compiler has two stage name lookup (as gcc >= 3.4 does)
    // this is requried to prevent undef. symbols
    using MultiArg<T>::_ignoreable;
    using MultiArg<T>::_hasBlanks;
    using MultiArg<T>::_extractValue;
    using MultiArg<T>::_typeDesc;
    using MultiArg<T>::_name;
    using MultiArg<T>::_description;
    using MultiArg<T>::_alreadySet;
    using MultiArg<T>::toString;

  public:

    /**
     * Constructor.
     * \param name - The name of the Arg. Note that this is used for
     * identification, not as a long flag.
     * \param desc - A description of what the argument is for or
     * does.
     * \param req - Whether the argument is required on the command
     *  line.
     * \param typeDesc - A short, human readable description of the
     * type that this object expects.  This is used in the generation
     * of the USAGE statement.  The goal is to be helpful to the end user
     * of the program.
     * \param ignoreable - Whether or not this argument can be ignored
     * using the "--" flag.
     * \param v - An optional visitor.  You probably should not
     * use this unless you have a very good reason.
     */
    UnlabeledMultiArg( const std::string& name,
                       const std::string& desc,
                       bool req,
                       const std::string& typeDesc,
                       bool ignoreable = false,
                       Visitor* v = NULL );
    /**
     * Constructor.
     * \param name - The name of the Arg. Note that this is used for
     * identification, not as a long flag.
     * \param desc - A description of what the argument is for or
     * does.
     * \param req - Whether the argument is required on the command
     *  line.
     * \param typeDesc - A short, human readable description of the
     * type that this object expects.  This is used in the generation
     * of the USAGE statement.  The goal is to be helpful to the end user
     * of the program.
     * \param parser - A CmdLine parser object to add this Arg to
     * \param ignoreable - Whether or not this argument can be ignored
     * using the "--" flag.
     * \param v - An optional visitor.  You probably should not
     * use this unless you have a very good reason.
     */
    UnlabeledMultiArg( const std::string& name,
                       const std::string& desc,
                       bool req,
                       const std::string& typeDesc,
                       CmdLineInterface& parser,
                       bool ignoreable = false,
                       Visitor* v = NULL );

    /**
     * Constructor.
     * \param name - The name of the Arg. Note that this is used for
     * identification, not as a long flag.
     * \param desc - A description of what the argument is for or
     * does.
     * \param req - Whether the argument is required on the command
     *  line.
     * \param constraint - A pointer to a Constraint object used
     * to constrain this Arg.
     * \param ignoreable - Whether or not this argument can be ignored
     * using the "--" flag.
     * \param v - An optional visitor.  You probably should not
     * use this unless you have a very good reason.
     */
    UnlabeledMultiArg( const std::string& name,
                       const std::string& desc,
                       bool req,
                       Constraint<T>* constraint,
                       bool ignoreable = false,
                       Visitor* v = NULL );

    /**
     * Constructor.
     * \param name - The name of the Arg. Note that this is used for
     * identification, not as a long flag.
     * \param desc - A description of what the argument is for or
     * does.
     * \param req - Whether the argument is required on the command
     *  line.
     * \param constraint - A pointer to a Constraint object used
     * to constrain this Arg.
     * \param parser - A CmdLine parser object to add this Arg to
     * \param ignoreable - Whether or not this argument can be ignored
     * using the "--" flag.
     * \param v - An optional visitor.  You probably should not
     * use this unless you have a very good reason.
     */
    UnlabeledMultiArg( const std::string& name,
                       const std::string& desc,
                       bool req,
                       Constraint<T>* constraint,
                       CmdLineInterface& parser,
                       bool ignoreable = false,
                       Visitor* v = NULL );

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

    /**
     * Returns the a short id string.  Used in the usage.
     * \param val - value to be used.
     */
    virtual std::string shortID(const std::string& val="val") const;

    /**
     * Returns the a long id string.  Used in the usage.
     * \param val - value to be used.
     */
    virtual std::string longID(const std::string& val="val") const;

    /**
     * Opertor ==.
     * \param a - The Arg to be compared to this.
     */
    virtual bool operator==(const Arg& a) const;

    /**
     * Pushes this to back of list rather than front.
     * \param argList - The list this should be added to.
     */
    virtual void addToList( std::list<Arg*>& argList ) const;
};

template<class T>
UnlabeledMultiArg<T>::UnlabeledMultiArg(const std::string& name,
                                        const std::string& desc,
                                        bool req,
                                        const std::string& typeDesc,
                                        bool ignoreable,
                                        Visitor* v)
  : MultiArg<T>("", name, desc,  req, typeDesc, v)
{
  _ignoreable = ignoreable;
  OptionalUnlabeledTracker::check(true, toString());
}

template<class T>
UnlabeledMultiArg<T>::UnlabeledMultiArg(const std::string& name,
                                        const std::string& desc,
                                        bool req,
                                        const std::string& typeDesc,
                                        CmdLineInterface& parser,
                                        bool ignoreable,
                                        Visitor* v)
  : MultiArg<T>("", name, desc,  req, typeDesc, v)
{
  _ignoreable = ignoreable;
  OptionalUnlabeledTracker::check(true, toString());
  parser.add( this );
}


template<class T>
UnlabeledMultiArg<T>::UnlabeledMultiArg(const std::string& name,
                                        const std::string& desc,
                                        bool req,
                                        Constraint<T>* constraint,
                                        bool ignoreable,
                                        Visitor* v)
  : MultiArg<T>("", name, desc,  req, constraint, v)
{
  _ignoreable = ignoreable;
  OptionalUnlabeledTracker::check(true, toString());
}

template<class T>
UnlabeledMultiArg<T>::UnlabeledMultiArg(const std::string& name,
                                        const std::string& desc,
                                        bool req,
                                        Constraint<T>* constraint,
                                        CmdLineInterface& parser,
                                        bool ignoreable,
                                        Visitor* v)
  : MultiArg<T>("", name, desc,  req, constraint, v)
{
  _ignoreable = ignoreable;
  OptionalUnlabeledTracker::check(true, toString());
  parser.add( this );
}


template<class T>
bool UnlabeledMultiArg<T>::processArg(int *i, std::vector<std::string>& args)
{
  if ( _hasBlanks( args[*i] ) )
    return false;
  // never ignore an unlabeled multi arg
  // always take the first value, regardless of the start string
  _extractValue( args[(*i)] );
  /*
  // continue taking args until we hit the end or a start string
  while ( (unsigned int)(*i)+1 < args.size() &&
  		args[(*i)+1].find_first_of( Arg::flagStartString() ) != 0 &&
            args[(*i)+1].find_first_of( Arg::nameStartString() ) != 0 )
  	_extractValue( args[++(*i)] );
  */
  _alreadySet = true;
  return true;
}

template<class T>
std::string UnlabeledMultiArg<T>::shortID(const std::string& val) const
{
  static_cast<void>(val); // Ignore input, don't warn
  return std::string("<") + _typeDesc + "> ...";
}

template<class T>
std::string UnlabeledMultiArg<T>::longID(const std::string& val) const
{
  static_cast<void>(val); // Ignore input, don't warn
  return std::string("<") + _typeDesc + ">  (accepted multiple times)";
}

template<class T>
bool UnlabeledMultiArg<T>::operator==(const Arg& a) const
{
  if ( _name == a.getName() || _description == a.getDescription() )
    return true;
  else
    return false;
}

template<class T>
void UnlabeledMultiArg<T>::addToList( std::list<Arg*>& argList ) const
{
  argList.push_back( const_cast<Arg*>(static_cast<const Arg* const>(this)) );
}

}

#endif