/* 
   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: Christian Meyer
   co-programmer: ...
*/


/**
   \brief breaks a string into parts that were initially seperated by comma
   \param string the string to break into substrings
*/

#include "substring.h"

#include <string.h>
#include <assert.h>

SubString::SubString( const char* string)
{
  n = 0;
	
  assert( string != NULL);
	
  for( int i = 0; i < strlen(string); i++) if( string[i] == ',') n++;

  n += 1;
	
  strings = new char*[n];

  assert (strings != NULL);
	
  int i = 0;
  int l = 0;
	
  const char* offset = string;
  char* end = strchr( string, ',');
  while( end != NULL)
    {
      assert( i < n);
      l = end - offset;
      strings[i] = new char[l + 1];
      assert( strings[i] != NULL);
      strncpy( strings[i], offset, l);
      strings[i][l] = 0;
      i++;
      end++;
      offset = end;
      end = strchr( offset, ',');
    }
	
  strings[i] = new char[l + 1];
  l = strlen( offset);
  strncpy( strings[i], offset, l);
  strings[i][l] = 0;
}

/**
   \brief removes the object from memory
*/
SubString::~SubString()
{
  for( int i = 0; i < n; i++)
    {
      delete strings[i];
    }
	
  delete strings;
}

/**
   \brief get the amount of substrings
   \returns the amount of substrings
*/
int SubString::getCount()
{
  return n;
}

/**
   \brief get a particular substring
   \param i the ID of the substring to return
   \returns the designated substring or NULL if an invalid ID was given
*/
const char* SubString::getString( int i)
{
  if( i < n && i >= 0) return strings[i];
  else return NULL;
}