DwmOptArgs.hh

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//===========================================================================
// @(#) $DwmPath$
//===========================================================================
//  Copyright (c) Daniel W. McRobb 2007, 2016
//  All rights reserved.
//
//  Redistribution and use in source and binary forms, with or without
//  modification, are permitted provided that the following conditions
//  are met:
//
//  1. Redistributions of source code must retain the above copyright
//     notice, this list of conditions and the following disclaimer.
//  2. Redistributions in binary form must reproduce the above copyright
//     notice, this list of conditions and the following disclaimer in the
//     documentation and/or other materials provided with the distribution.
//  3. The names of the authors and copyright holders may not be used to
//     endorse or promote products derived from this software without
//     specific prior written permission.
//
//  IN NO EVENT SHALL DANIEL W. MCROBB BE LIABLE TO ANY PARTY FOR
//  DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
//  INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE,
//  EVEN IF DANIEL W. MCROBB HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
//  DAMAGE.
//
//  THE SOFTWARE PROVIDED HEREIN IS ON AN "AS IS" BASIS, AND
//  DANIEL W. MCROBB HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT,
//  UPDATES, ENHANCEMENTS, OR MODIFICATIONS. DANIEL W. MCROBB MAKES NO
//  REPRESENTATIONS AND EXTENDS NO WARRANTIES OF ANY KIND, EITHER
//  IMPLIED OR EXPRESS, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
//  WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE,
//  OR THAT THE USE OF THIS SOFTWARE WILL NOT INFRINGE ANY PATENT,
//  TRADEMARK OR OTHER RIGHTS.
//===========================================================================
 
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
 
#ifndef _DWMOPTARGS_HH_
#define _DWMOPTARGS_HH_
 
#include <iostream>
#include <map>
#include <sstream>
#include <string>
#include <vector>
 
#include "DwmStringUtils.hh"
 
namespace Dwm {
 
  //--------------------------------------------------------------------------
  //--------------------------------------------------------------------------
  template <typename T> class Argument;
  
  //--------------------------------------------------------------------------
  //--------------------------------------------------------------------------
  template <typename T>
  std::ostream & operator << (std::ostream & os, const Argument<T> & arg)    
  {
    os << arg._value;
    return(os);
  }
  
  //--------------------------------------------------------------------------
  //--------------------------------------------------------------------------
  template <typename T>
  class Argument
  {
  public:
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    Argument()
    : _value()
    {}
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    Argument & operator = (const std::string & s)
    {
      StringUtils::StringTo(s, _value);
      return(*this);
    }
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    operator T () const
    {
      return(_value);
    }
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    friend std::ostream & 
    operator << <> (std::ostream & os, const Argument<T> & arg);
    
  protected:
    T  _value;
  };
  
  //--------------------------------------------------------------------------
  //--------------------------------------------------------------------------
  class OptArg
  {
  public:
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    OptArg();
    
    OptArg(const std::string & c, const std::string & longName = "", 
           bool isRequired = false, const std::string & value = "",
           const std::string & help = "");
 
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    const std::string & Name() const;
 
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    const std::string & LongName() const;
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    bool IsRequired() const;
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    bool IsRequired(bool isRequired);
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    bool NeedsArg() const;
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    const std::string & Value() const;
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    const std::string & Value(const std::string & value);
 
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    const std::string & Help() const;
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    const std::string & Help(const std::string & help);
    
  protected:
    std::string  _name;
    std::string  _longName;
    bool        _isRequired;
    bool        _needsArg;
    std::string  _value;
    std::string  _help;
  };
 
  //--------------------------------------------------------------------------
  //--------------------------------------------------------------------------
  class OptArgs
  {
  public:
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    OptArgs();
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    void AddOptArg(const OptArg & optarg);
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    void AddOptArg(const std::string & name, const std::string & longName,
                   bool isRequired = false, const std::string & def = "",
                   const std::string & help = "");
 
    void AddNormalArg(const std::string & name, bool required);
    
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    template <typename T>
    T Get(int c)
    {
      Argument<T>  rc;
      std::map<int,OptArg>::const_iterator i = _args.find(c);
      if (i != _args.end()) {
        rc = i->second.Value();
      }
      return(rc);
    }
 
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    template <typename T>
    T Get(const std::string & s)
    {
      Argument<T>  rc;
      std::map<std::string,OptArg *>::const_iterator i = _longArgs.find(s);
      if (i != _longArgs.end()) {
        rc = i->second->Value();
      }
      return(rc);
    }
 
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    int Parse(int argc, const std::string argv[]);
 
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    int Parse(int argc, char *argv[]);
     
    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    void Usage(const std::string & argv0) const;
                    
  protected:
    std::map<int,OptArg>            _args;
    std::map<std::string,OptArg *>  _longArgs;
 
    std::vector<std::pair<std::string,bool> >  _normalArgs;
  };
  
 
}  // namespace Dwm
 
#endif  // _DWMOPTARGS_HH_
 
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//  tab-width: 2
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//-------------------------------------------------------------------------