| /******************************************************************************* |
| * Copyright (c) 2006 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.update.internal.ui; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.UnsupportedEncodingException; |
| |
| public class URLCoder { |
| |
| public static String encode(String s) throws UnsupportedEncodingException { |
| return urlEncode(s.getBytes("UTF8")); //$NON-NLS-1$ |
| } |
| |
| public static String decode(String s) throws UnsupportedEncodingException { |
| return new String(urlDecode(s), "UTF8"); //$NON-NLS-1$ |
| } |
| |
| private static String urlEncode(byte[] data) { |
| StringBuffer buf = new StringBuffer(data.length); |
| for (int i = 0; i < data.length; i++) { |
| buf.append('%'); |
| buf.append(Character.forDigit((data[i] & 240) >>> 4, 16)); |
| buf.append(Character.forDigit(data[i] & 15, 16)); |
| } |
| return buf.toString(); |
| } |
| |
| private static byte[] urlDecode(String encodedURL) { |
| int len = encodedURL.length(); |
| ByteArrayOutputStream os = new ByteArrayOutputStream(len); |
| for (int i = 0; i < len;) { |
| switch (encodedURL.charAt(i)) { |
| case '%': |
| if (len >= i + 3) { |
| os.write(Integer.parseInt(encodedURL.substring(i + 1, i + 3), 16)); |
| } |
| i += 3; |
| break; |
| case '+': // exception from standard |
| os.write(' '); |
| i++; |
| break; |
| default: |
| os.write(encodedURL.charAt(i++)); |
| break; |
| } |
| |
| } |
| return os.toByteArray(); |
| } |
| } |