1 /* 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.xml.internal.messaging.saaj.util; 27 28 29 // Cut&paste from sun.net.www.ParseUtil: decode, unescape 30 31 public class ParseUtil { 32 /** 33 * Un-escape and return the character at position i in string s. 34 */ 35 private static char unescape(String s, int i) { 36 return (char) Integer.parseInt(s.substring(i+1,i+3),16); 37 } 38 39 /** 40 * Returns a new String constructed from the specified String by replacing 41 * the URL escape sequences and UTF8 encoding with the characters they 42 * represent. 43 */ 44 public static String decode(String s) { 45 StringBuilder sb = new StringBuilder(); 46 47 int i=0; 48 while (i<s.length()) { 49 char c = s.charAt(i); 50 char c2, c3; 51 52 if (c != '%') { 53 i++; 54 } else { 55 try { 56 c = unescape(s, i); 57 i += 3; 58 59 if ((c & 0x80) != 0) { 60 switch (c >> 4) { 61 case 0xC: case 0xD: 62 c2 = unescape(s, i); 63 i += 3; 64 c = (char)(((c & 0x1f) << 6) | (c2 & 0x3f)); 65 break; 66 67 case 0xE: 68 c2 = unescape(s, i); 69 i += 3; 70 c3 = unescape(s, i); 71 i += 3; 72 c = (char)(((c & 0x0f) << 12) | 73 ((c2 & 0x3f) << 6) | 74 (c3 & 0x3f)); 75 break; 76 77 default: 78 throw new IllegalArgumentException(); 79 } 80 } 81 } catch (NumberFormatException e) { 82 throw new IllegalArgumentException(); 83 } 84 } 85 86 sb.append(c); 87 } 88 89 return sb.toString(); 90 } 91 92 93 }