source: trunk/yat/Option.cc @ 1434

// $Id: Option.cc 2384 2010-12-22 14:03:36Z peter $

/*
  Copyright (C) 2007, 2008 Jari Häkkinen, Peter Johansson
  Copyright (C) 2009, 2010 Peter Johansson

  This file is part of the yat library, http://dev.thep.lu.se/yat

  The yat library is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License as
  published by the Free Software Foundation; either version 3 of the
  License, or (at your option) any later version.

  The yat library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with yat. If not, see <http://www.gnu.org/licenses/>.
*/

#include "Option.h"
#include "CommandLine.h"
#include "Exception.h"

#include <iostream>
#include <sstream>
#include <string>

namespace theplu {
namespace yat {
namespace utility {


  Option::Option(CommandLine& cmd, std::string flag, std::string desc)
    : cmd_(cmd), description_(desc), present_(false)
  {
    if (flag.empty())
      throw runtime_error("yat: Option: given flag is empty");
    if (flag.size()==1 || (flag.size()==2 && flag[1]==','))
      short_name_ = flag[0];
    else if (flag[1]==','){
      short_name_ = flag[0];
      long_name_ = flag.substr(2);
      if (long_name_.size()==1)
        long_name_="";
    }
    else {
      short_name_ = '\0';
      long_name_=flag;
    }
    cmd.add(*this);
  }


  Option::~Option(void)
  {
  }


  const CommandLine& Option::cmd(void) const
  {
    return cmd_;
  }


  std::string Option::description(void) const
  {
    return description_;
  }


  void Option::description(const std::string& description)
  {
    description_ = description;
  }


  std::string Option::long_name(void) const
  {
    return long_name_;
  }


  void Option::parse(std::vector<std::string>::iterator& first, 
                     const std::vector<std::string>::iterator& last)
  {
    present_=true;
    do_parse(first, last);
  }


  bool Option::present(void) const
  {
    if (!cmd().parsed()) {
      std::string s("theplu::yat::utility::Option::present");
      s += " called before Commandline was parsed";
      throw std::logic_error(s);
    }
    return present_;
  }


  std::string Option::print(void)
  {
    return print1()+print2()+print3()+std::string("\t")+print4();
  }


  std::string Option::print1(void) const
  {
    std::string str;
    if (short_name()){
      str = std::string("-")+short_name();
      if (!long_name().empty())
        str += std::string(",");
    }
    else
      str = std::string("   ");
    return str;
  }

    
  std::string Option::print2(void) const
  {
    if (long_name().size()) 
      return std::string(" --")+long_name();
    return std::string();
  }


  std::string Option::print3(void) const
  {
    return std::string();
  }


  std::string Option::print4(void) const
  {
    return description_;
  }


  void Option::reset(void)
  {
    present_=false;
  }


  char Option::short_name(void) const
  {
    return short_name_;
  }


  void Option::validate()
  {
    do_validate();
  }

}}} // of namespace utility, yat, and theplu