source: orxonox.OLD/orxonox/trunk/src/lib/util/substring.cc @ 4830

/*
   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: Benjamin Grauer

   2005-06-10: some naming conventions
*/


/**
   \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, char splitter)
{
  this->splittersCount = 0;

  assert( string != NULL);

  for( int i = 0; i < strlen(string); i++) if( string[i] == splitter)
      splittersCount++;

  this->splittersCount += 1;

  this->strings = new char*[this->splittersCount];
  assert (strings != NULL);

  int i = 0;
  int l = 0;

  const char* offset = string;
  char* end = strchr( string, splitter);
  while( end != NULL)
    {
      assert( i < this->splittersCount);
      l = end - offset;
      this->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, splitter);
    }

  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 < this->splittersCount; i++)
    {
      delete this->strings[i];
    }

  delete this->strings;
}

/**
   \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 < this->splittersCount && i >= 0)
    return this->strings[i];
  else
    return NULL;
}