1 /* 2 * Copyright (c) 1997, 2015, 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 27 /* 28 * The Original Code is HAT. The Initial Developer of the 29 * Original Code is Bill Foote, with contributions from others 30 * at JavaSoft/Sun. 31 */ 32 33 package jdk.test.lib.hprof.util; 34 import java.util.*; 35 36 /** 37 * Miscellaneous functions I couldn't think of a good place to put. 38 * 39 * @author Bill Foote 40 */ 41 42 43 public class Misc { 44 45 private static char[] digits = { '0', '1', '2', '3', '4', '5', '6', '7', 46 '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' }; 47 48 public final static String toHex(int addr) { 49 char[] buf = new char[8]; 50 int i = 0; 51 for (int s = 28; s >= 0; s -= 4) { 52 buf[i++] = digits[(addr >> s) & 0xf]; 53 } 54 return "0x" + new String(buf); 55 } 56 57 public final static String toHex(long addr) { 58 return "0x" + Long.toHexString(addr); 59 } 60 61 public final static long parseHex(String value) { 62 long result = 0; 63 if (value.length() < 2 || value.charAt(0) != '0' || 64 value.charAt(1) != 'x') { 65 return -1L; 66 } 67 for(int i = 2; i < value.length(); i++) { 68 result *= 16; 69 char ch = value.charAt(i); 70 if (ch >= '0' && ch <= '9') { 71 result += (ch - '0'); 72 } else if (ch >= 'a' && ch <= 'f') { 73 result += (ch - 'a') + 10; 74 } else if (ch >= 'A' && ch <= 'F') { 75 result += (ch - 'A') + 10; 76 } else { 77 throw new NumberFormatException("" + ch 78 + " is not a valid hex digit"); 79 } 80 } 81 return result; 82 } 83 84 public static String encodeHtml(String str) { 85 final int len = str.length(); 86 StringBuilder sb = new StringBuilder(); 87 for (int i = 0; i < len; i++) { 88 char ch = str.charAt(i); 89 if (ch == '<') { 90 sb.append("<"); 91 } else if (ch == '>') { 92 sb.append(">"); 93 } else if (ch == '"') { 94 sb.append("""); 95 } else if (ch == '\'') { 96 sb.append("'"); 97 } else if (ch == '&') { 98 sb.append("&"); 99 } else if (ch < ' ') { 100 sb.append("&#").append((int)ch).append(';'); 101 } else { 102 int c = (ch & 0xFFFF); 103 if (c > 127) { 104 sb.append("&#").append(c).append(';'); 105 } else { 106 sb.append(ch); 107 } 108 } 109 } 110 return sb.toString(); 111 } 112 }