/*
* Copyright 2000-2009 JetBrains s.r.o.
*
* Licensed 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 com.maddyhome.idea.copyright.pattern;
public class EntityUtil {
public static String encode(String text) {
StringBuffer res = new StringBuffer(text.length());
for (int i = 0; i < text.length(); i++) {
char ch = text.charAt(i);
if (ch == '&') {
res.append("&");
}
else if (ch == '$') {
res.append("$");
}
else {
res.append(ch);
}
}
return res.toString();
}
public static String decode(String text) {
StringBuffer res = new StringBuffer(text.length());
for (int i = 0; i < text.length(); i++) {
char ch = text.charAt(i);
switch (ch) {
case '&':
int semi = text.indexOf(';', i);
if (semi > i) {
char newch = ch;
String entity = text.substring(i, semi + 1);
if (entity.equals("$")) {
newch = '$';
}
else if (entity.equals("&")) {
newch = '&';
i = semi;
}
if (newch != ch) {
ch = newch;
i = semi;
}
}
res.append(ch);
break;
default:
res.append(ch);
}
}
return res.toString();
}
private EntityUtil() {
}
}