/*
 * Created by IntelliJ IDEA.
 * User: fmike
 * Date: 20.07.2003
 * Time: 0:56:28
 */
package net.sourceforge.pain.util;

/**
 * This class presents a target list wrapper. It provides basic operations on target list.
 * (We keep array of Strings as target list in db)
 */
public final class TargetList {

	/** add name to the start of target list and converts it to lowercase */
	public static String[] addNameToList(String list[], String name) {
		return addNameToList(list, 0, name);
	}


	/** add name to target list and converts it to lowercase */
	public static String[] addNameToList(String list[], int index, String name) {
		String newList[] = new String[list.length + 1];
		if (index == 0) {
			System.arraycopy(list, 0, newList, 1, list.length);
		} else if (index == list.length) {
			System.arraycopy(list, 0, newList, 0, list.length);
		} else {
			System.arraycopy(list, 0, newList, 0, index);
			System.arraycopy(list, index, newList, index + 1, list.length - index);
		}
		newList[index] = name.toLowerCase();
		return newList;
	}

	public static String string(String[] targetList) {
		if (targetList == null) {
			return null;
		}
		if (targetList.length == 0) {
			return "<<empty>>";
		}
		StringBuffer b = new StringBuffer();
		for (int i = 0; i < targetList.length; i++) {
			b.append(targetList[i]);
			if (i < targetList.length - 1) {
				b.append(" ");
			}
		}
		return b.toString();
	}


}