/*
 * $Id: ItemList.java,v 1.1 2006/04/15 14:10:48 platform Exp $
 * Created on 2006-3-24
 */
package org.json.simple;

import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;

/**
 * |a:b:c| => |a|,|b|,|c| |:| => ||,|| |a:| => |a|,||
 * 
 * @author FangYidong<fangyidong@yahoo.com.cn>
 */
public class ItemList
{
  private String sp = ",";

  List items = new ArrayList();

  public ItemList()
  {
  }

  public ItemList(String s)
  {
    this.split(s, sp, items);
  }

  public ItemList(String s, String sp)
  {
    this.sp = s;
    this.split(s, sp, items);
  }

  public ItemList(String s, String sp, boolean isMultiToken)
  {
    split(s, sp, items, isMultiToken);
  }

  public List getItems()
  {
    return this.items;
  }

  public String[] getArray()
  {
    return (String[]) this.items.toArray();
  }

  public void split(String s, String sp, List append, boolean isMultiToken)
  {
    if (s == null || sp == null)
      return;
    if (isMultiToken)
    {
      StringTokenizer tokens = new StringTokenizer(s, sp);
      while (tokens.hasMoreTokens())
      {
        append.add(tokens.nextToken().trim());
      }
    }
    else
    {
      this.split(s, sp, append);
    }
  }

  public void split(String s, String sp, List append)
  {
    if (s == null || sp == null)
      return;
    int pos = 0;
    int prevPos = 0;
    do
    {
      prevPos = pos;
      pos = s.indexOf(sp, pos);
      if (pos == -1)
        break;
      append.add(s.substring(prevPos, pos).trim());
      pos += sp.length();
    } while (pos != -1);
    append.add(s.substring(prevPos).trim());
  }

  public void setSP(String sp)
  {
    this.sp = sp;
  }

  public void add(int i, String item)
  {
    if (item == null)
      return;
    items.add(i, item.trim());
  }

  public void add(String item)
  {
    if (item == null)
      return;
    items.add(item.trim());
  }

  public void addAll(ItemList list)
  {
    items.addAll(list.items);
  }

  public void addAll(String s)
  {
    this.split(s, sp, items);
  }

  public void addAll(String s, String sp)
  {
    this.split(s, sp, items);
  }

  public void addAll(String s, String sp, boolean isMultiToken)
  {
    this.split(s, sp, items, isMultiToken);
  }

  /**
   * @param i
   *          0-based
   * @return
   */
  public String get(int i)
  {
    return (String) items.get(i);
  }

  public int size()
  {
    return items.size();
  }

  public String toString()
  {
    return toString(sp);
  }

  public String toString(String sp)
  {
    StringBuffer sb = new StringBuffer();

    for (int i = 0; i < items.size(); i++)
    {
      if (i == 0)
        sb.append(items.get(i));
      else
      {
        sb.append(sp);
        sb.append(items.get(i));
      }
    }
    return sb.toString();

  }

  public void clear()
  {
    items.clear();
  }

  public void reset()
  {
    sp = ",";
    items.clear();
  }
}