Java XML Unescape unescapeFromXML(String string)

Description

Unescapes the String by converting XML escape sequences back into normal characters.

License

Open Source License

Parameter

Parameter	Description
string	the string to unescape.

Return

the string with appropriate characters unescaped.

Declaration

public static String unescapeFromXML(String string) 

Method Source Code

//package com.java2s;
/**/*from   w w w .j a v a 2s.  co m*/
 * $Revision$
 * $Date$
 *
 * Copyright (C) 2004-2008 Jive Software. All rights reserved.
 *
 * 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.
 */

public class Main {
    /**
     * Unescapes the String by converting XML escape sequences back into normal
     * characters.
     *
     * @param string the string to unescape.
     * @return the string with appropriate characters unescaped.
     */
    public static String unescapeFromXML(String string) {
        string = replace(string, "&lt;", "<");
        string = replace(string, "&gt;", ">");
        string = replace(string, "&quot;", "\"");
        return replace(string, "&amp;", "&");
    }

    /**
     * Replaces all instances of oldString with newString in string.
     *
     * @param string the String to search to perform replacements on.
     * @param oldString the String that should be replaced by newString.
     * @param newString the String that will replace all instances of oldString.
     * @return a String will all instances of oldString replaced by newString.
     * @deprecated Use {@link String#replaceAll(String, String)}}
     */
    @Deprecated
    public static String replace(String string, String oldString,
            String newString) {
        return replace(string, oldString, newString, new int[1]);
    }

    /**
     * Replaces all instances of oldString with newString in line.
     * The count Integer is updated with number of replaces.
     *
     * @param line the String to search to perform replacements on.
     * @param oldString the String that should be replaced by newString.
     * @param newString the String that will replace all instances of oldString.
     * @return a String will all instances of oldString replaced by newString.
     */
    public static String replace(String line, String oldString,
            String newString, int[] count) {
        return replace(line, oldString, newString, false, count);
    }

    private static String replace(String line, String oldString,
            String newString, boolean ignoreCase, int[] count) {
        if (line == null) {
            return null;
        }
        String lcLine = ignoreCase ? line.toLowerCase() : line;
        String lcOldString = ignoreCase ? oldString.toLowerCase()
                : oldString;
        int i = 0;
        if ((i = lcLine.indexOf(lcOldString, i)) >= 0) {
            int counter = 1;
            char[] line2 = line.toCharArray();
            char[] newString2 = newString.toCharArray();
            int oLength = oldString.length();
            StringBuilder buf = new StringBuilder(line2.length);
            buf.append(line2, 0, i).append(newString2);
            i += oLength;
            int j = i;
            while ((i = lcLine.indexOf(lcOldString, i)) > 0) {
                counter++;
                buf.append(line2, j, i - j).append(newString2);
                i += oLength;
                j = i;
            }
            buf.append(line2, j, line2.length - j);
            count[0] = counter;
            return buf.toString();
        }
        return line;
    }
}

Related

1. unescapedKeyNameXml(final String name)
2. unescapeForXML(String string)
3. unescapeFromXml(String escapedString)
4. unescapeFromXML(String st)
5. unescapeFromXML(String string)
6. unescapeFromXML(String string)
7. unescapeFromXML(String string)
8. unescapeXML(final String s)