StringUtil.java

/*
 * Copyright 2007-2009 Medsea Business Solutions S.L.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package eu.medsea.util;

import java.io.UnsupportedEncodingException;
import java.util.Collection;
import java.util.Vector;

/**
 * A string utility class with various string manipulation functions
 */
public class StringUtil {

	static final byte[] HEX_CHAR_TABLE = { (byte) '0', (byte) '1', (byte) '2',
			(byte) '3', (byte) '4', (byte) '5', (byte) '6', (byte) '7',
			(byte) '8', (byte) '9', (byte) 'a', (byte) 'b', (byte) 'c',
			(byte) 'd', (byte) 'e', (byte) 'f' };

	/**
	 * Convert a byte array into a hex string representation
	 * @param raw the byte [] to convert to a hex string representation
	 * @return the hex representation
	 * @throws UnsupportedEncodingException
	 */
	public static String getHexString(byte[] raw)
			throws UnsupportedEncodingException {
		if(raw == null) {
			return "";
		}
		byte[] hex = new byte[2 * raw.length];
		int index = 0;

		for (int i = 0; i < raw.length; i++) {
			byte b = raw[i];
			int v = b & 0xFF;
			hex[index++] = HEX_CHAR_TABLE[v >>> 4];
			hex[index++] = HEX_CHAR_TABLE[v & 0xF];
		}
		return new String(hex, "ASCII");
	}

	public static boolean contains(String target, String content) {
		if(target.indexOf(content) != -1) {
			return true;
		}
		return false;
	}

	public static String toStringArrayToString(String [] array) {
		Collection c = new Vector();
		for(int i =0; i < array.length; i++) {
			c.add(array[i]);
		}
		return c.toString();
	}
}