/*
* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.hotspot.igv.util;
/**
*
* @author tkrodrig
*/
public class StringUtils {
public static String escapeHTML(String s) {
StringBuilder str = null;
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i);
switch (c) {
case '&':
case '<':
case '>':
case '"':
case '\'':
if (str == null) {
str = new StringBuilder();
str.append(s, 0, i);
}
switch (c) {
case '&':
str.append("&");
break;
case '<':
str.append("<");
break;
case '>':
str.append(">");
break;
case '"':
str.append(""");
break;
case '\'':
str.append("'");
break;
default:
assert false;
}
break;
case '\u0000':
case '\u0001':
case '\u0002':
case '\u0003':
case '\u0004':
case '\u0005':
case '\u0006':
case '\u0007':
case '\u0008':
case '\u000b':
case '\u000c':
case '\u000e':
case '\u000f':
case '\u0010':
case '\u0011':
case '\u0012':
case '\u0013':
case '\u0014':
case '\u0015':
case '\u0016':
case '\u0017':
case '\u0018':
case '\u0019':
case '\u001a':
case '\u001b':
case '\u001c':
case '\u001d':
case '\u001e':
case '\u001f':
if (str == null) {
str = new StringBuilder();
str.append(s, 0, i);
}
str.append("'0x").append(Integer.toHexString(c));
break;
default:
if (str != null) {
str.append(c);
}
break;
}
}
if (str == null) {
return s;
} else {
return str.toString();
}
}
}