/*
 * PVVMUD a 3D MUD
 * Copyright (C) 1998-1999  Programvareverkstedet (pvv@pvv.org)
 *
 * 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 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */
#include "pvvmud.H"
#include <stdlib.h>
#include "intarray.H"
#include "exception.H"

CIntArray::CIntArray(){
  m_size = 0;
  m_num = 0;
  m_array = NULL;
}

CIntArray::CIntArray(int size){
  if (size > 0){
    m_size = size;
    m_num = 0;
    m_array = (int*)malloc(m_size*sizeof(int));
  } else {
    m_size = 0;
    m_num = 0;
    m_array = NULL;
  }
}

CIntArray::CIntArray(const CIntArray & array){
  int ii;
  m_size = array.m_num;
  m_num = array.m_num;
  m_array = (int*)malloc(m_size*sizeof(int));
  for (ii = 0; ii < m_num; ii++) m_array[ii] = array.m_array[ii];
}

CIntArray::~CIntArray() {
  if (m_array != NULL) free(m_array);
}

int CIntArray::add(int num){
  if (m_num >= m_size || m_array == NULL) {
    if (m_size <= 0) m_size = 16;
    else m_size = m_size*2;
    m_array = (int*)realloc(m_array,m_size*sizeof(int));
  }
  if (m_array != NULL) m_array[m_num] = num;
  return m_num++;
}

int CIntArray::set(int index, int num){
  if ((index < m_size) && (index >= 0)){
    m_array[index] = num;
    if (m_num <= index) m_num = index+1;
    return true;
  }
  return false;
}

int CIntArray::get( int index ) const{
  if (index < 0 || index >= m_num || m_array == NULL) 
    throw new CException("OutOfBound exception");
  return m_array[index];
}

int CIntArray::getNumElements() const{
  return m_num;
}

int CIntArray::find(int value) const{
  int index,num = getNumElements();
  for (index = 0; index < num; index++){ 
    if (get(index) == value) return index;
  }
  return -1;
}

CIntArray CIntArray::substracSet( const CIntArray & array ) const {
  CIntArray result;
  int index,num = getNumElements();
  for (index = 0; index < num; index++){ 
    int value = get(index);
    if (array.find(value) == -1) result.add(value);
  }
  return result;
}

CIntArray CIntArray::unionSet( const CIntArray & array ) const {
  CIntArray result;
  int index,num = getNumElements();
  for (index = 0; index < num; index++){ 
    int value = get(index);
    if (array.find(value) != -1) result.add(value);
  }
  return result;
}