source: orxonox.OLD/trunk/src/lib/util/multi_type.cc @ 5539

/*
   orxonox - the future of 3D-vertical-scrollers

   Copyright (C) 2004 orx

   This program 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 2, or (at your option)
   any later version.

   ### File Specific:
   main-programmer: ...
   co-programmer: ...
*/

//#define DEBUG_SPECIAL_MODULE DEBUG_MODULE_

#include "multi_type.h"
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>

using namespace std;

MultiType::MultiType(bool value)
{
  this->init();
  this->type = MT_BOOL;
  this->value.Bool = value;

}

MultiType::MultiType(int value)
{
  this->init();
  this->type = MT_INT;
  this->value.Int = value;
}


MultiType::MultiType(double value)
{
  this->init();
  this->type = MT_FLOAT;
  this->value.Float = value;
}


MultiType::MultiType(char value)
{
  this->init();
  this->type = MT_CHAR;
  this->value.Char = value;
}


MultiType::MultiType(const char* value)
{
  this->init();
  this->type = MT_STRING;
  this->value.String = new char[strlen(value)+1];
  strcpy(this->value.String, value);

  this->storedString = this->value.String;
}

/**
 * standard deconstructor
*/
MultiType::~MultiType ()
{
  if (this->storedString != NULL)
    delete this->storedString;
}

void MultiType::init()
{
  this->storedString = NULL;
}


bool MultiType::getBool()
{
  // default case:
  if (this->type & MT_BOOL)
    return this->value.Bool;
  // Special Cases:
  else if (this->type & MT_INT) return (this->value.Int == 0)? false : true;
  else if (this->type & MT_FLOAT) return (this->value.Float == 0.0f)? false : true;
  else if (this->type & MT_CHAR) return (this->value.Char == '\0')? false : true;
  else if (this->type & MT_STRING) return (!strncmp(this->value.String, "true", 4) || !strncmp(this->value.String, "TRUE", 4) || !strncmp(this->value.String, "1", 1))? true : false; //! @TODO make this better.

  return false;
}


int MultiType::getInt()
{
  // default case:
  if (this->type & MT_INT)
    return this->value.Int;
  if (this->type & MT_BOOL) return (this->value.Bool)? 1 : 0;
  else if (this->type & MT_FLOAT) return (int) this->value.Float;
  else if (this->type & MT_CHAR) return (int) this->value.Char;
  else if (this->type & MT_STRING) {
    char* endPtr = NULL;
    int result = strtol(this->value.String, &endPtr, 10);
    if ( endPtr >= this->value.String && endPtr < this->value.String + strlen(this->value.String))
      return 0;
    else
      return result;
  }

  return 0;
}


float MultiType::getFloat()
{
 // default case:
  if (this->type & MT_FLOAT)
    return this->value.Float;
  if (this->type & MT_BOOL) return (this->value.Bool == true)? 1.0f : 0.0f;
  else if (this->type & MT_INT) return (float) this->value.Int;
  else if (this->type & MT_CHAR) return (float) this->value.Char;
  else if (this->type & MT_STRING) {
    char* endPtr = NULL;
    double result = strtod(this->value.String, &endPtr);
    if ( endPtr >= this->value.String && endPtr < this->value.String + strlen(this->value.String))
      return 0.0f;
    else
      return result;
  }

  return 0.0f;
}


char MultiType::getChar()
{
 // default case:
  if (this->type & MT_INT)
    return this->value.Int;
  if (this->type & MT_BOOL) return (this->value.Bool)? 'y' : 'n';
  else if (this->type & MT_INT) return (int) this->value.Int;
  else if (this->type & MT_FLOAT) return (char) this->value.Float;
  else if (this->type & MT_STRING) return *this->value.String;

  return '\0';
}

const char* MultiType::getString()
{
 // default case:
  if (this->type & MT_STRING)
    return this->value.String;
  else
  {
    if (this->type & MT_BOOL) return (this->value.Bool)? "true" : "false";
    else if (this->type & MT_CHAR) &this->value.Char;

    char tmpString[128];
    if (this->storedString != NULL)
    {
      delete[] this->storedString;
      this->storedString = NULL;
    }

    if (this->type & MT_INT)
    {
      sprintf(tmpString, "%d", this->value.Int);
      this->storedString = new char[strlen (tmpString)+1];
      strcpy (this->storedString, tmpString);
      return this->storedString;
    }
    if (this->type & MT_FLOAT)
    {
      sprintf(tmpString, "%f", this->value.Float);
      this->storedString = new char[strlen (tmpString)+1];
      strcpy (this->storedString, tmpString);
      return this->storedString;
    }
  }

  return "";
}