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Wudaosoft Commons Library

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/* 
 * Copyright(c)2010-2016 WUDAOSOFT.COM
 * 
 * Email:[email protected]
 * 
 * QQ:275100589
 */ 
 
package com.wudaosoft.commons.utils;

import java.nio.ByteBuffer;
import java.util.UUID;

import org.apache.commons.codec.binary.Base64;

/** 
 * @author Changsoul Wu
 * 
 */
public abstract class UUIDUtils {

	public static String uuid() {
        UUID uuid = UUID.randomUUID();
        return uuid.toString();
    }
	
	public static String uuid2() {
		UUID uuid = UUID.randomUUID();
		return uuid.toString().replaceAll("-", "");
	}

    public static String base64Uuid() {
        UUID uuid = UUID.randomUUID();
        return base64Uuid(uuid);
    }

    protected static String base64Uuid(UUID uuid) {

        ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
        bb.putLong(uuid.getMostSignificantBits());
        bb.putLong(uuid.getLeastSignificantBits());

        return Base64.encodeBase64URLSafeString(bb.array());
    }

    public static String encodeBase64Uuid(String uuidString) {
        UUID uuid = UUID.fromString(uuidString);
        return base64Uuid(uuid);
    }

    public static String decodeBase64Uuid(String compressedUuid) {

        byte[] byUuid = Base64.decodeBase64(compressedUuid);

        ByteBuffer bb = ByteBuffer.wrap(byUuid);
        UUID uuid = new UUID(bb.getLong(), bb.getLong());
        return uuid.toString();
    }

    public static String base58Uuid() {
        UUID uuid = UUID.randomUUID();
        return base58Uuid(uuid);
    }

    protected static String base58Uuid(UUID uuid) {

        ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
        bb.putLong(uuid.getMostSignificantBits());
        bb.putLong(uuid.getLeastSignificantBits());

        return Base58.encode(bb.array());
    }

    public static String encodeBase58Uuid(String uuidString) {
        UUID uuid = UUID.fromString(uuidString);
        return base58Uuid(uuid);
    }

    public static String decodeBase58Uuid(String base58uuid) {
        byte[] byUuid = Base58.decode(base58uuid);
        ByteBuffer bb = ByteBuffer.wrap(byUuid);
        UUID uuid = new UUID(bb.getLong(), bb.getLong());
        return uuid.toString();
    }
}