| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.royale.utils; |
| |
| import java.io.UnsupportedEncodingException; |
| import java.security.MessageDigest; |
| import java.security.NoSuchAlgorithmException; |
| |
| /** |
| * Utility class for encoding String |
| */ |
| public class StringEncoder |
| { |
| /** |
| * utility method to get the hash code of a specified string as a string. |
| * |
| * @param input String to hash |
| * @return resulting hash as a String |
| */ |
| public static String stringToHashCodeString(String input) |
| { |
| int hashCode = input.hashCode(); |
| StringBuffer hashCodeBuffer = new StringBuffer(); |
| hashCodeBuffer.append(toHex((byte)(hashCode >> 24))); |
| hashCodeBuffer.append(toHex((byte)((hashCode >> 16) & 0xFF))); |
| hashCodeBuffer.append(toHex((byte)((hashCode >> 8) & 0xFF))); |
| hashCodeBuffer.append(toHex((byte)(hashCode & 0xFF))); |
| return hashCodeBuffer.toString(); |
| } |
| |
| /** |
| * utility method to md5 a String |
| * |
| * @param input String to md5 |
| * @return resulting md5 as a String |
| */ |
| public static String stringToMD5String(String input) |
| { |
| String md5String = ""; |
| try |
| { |
| MessageDigest digest = MessageDigest.getInstance("MD5"); |
| byte[] md5Bytes = digest.digest(input.getBytes("UTF8")); |
| StringBuffer md5Buffer = new StringBuffer(); |
| for (byte md5Byte : md5Bytes) |
| md5Buffer.append(toHex(md5Byte)); |
| |
| md5String = md5Buffer.toString(); |
| } |
| catch (NoSuchAlgorithmException e) |
| { |
| assert false; |
| } |
| catch (UnsupportedEncodingException e) |
| { |
| assert false; |
| } |
| |
| return md5String; |
| } |
| |
| /** |
| * Simple function to return a two character string with the hex digits |
| * that represent the specified byte. |
| * |
| * @param b The byte to convert to a two character hex string. |
| * @return a two character string with the hex digits that represent the |
| * specified byte |
| */ |
| private static String toHex(byte b) |
| { |
| int highNibble = (b >> 4) & 0xF; |
| int lowNibble = b & 0xF; |
| return Integer.toHexString(highNibble) + Integer.toHexString(lowNibble); |
| } |
| } |