Java Java String Unescape unescapeJava(String value)

Here you can find the source of unescapeJava(String value)

Description

unescape Java

License

Open Source License

Declaration

public static String unescapeJava(String value) 

Method Source Code

//package com.java2s;
/**/*from  w ww  .  j  a  v  a 2s .  com*/
 * jetbrick-template
 * http://subchen.github.io/jetbrick-template/
 *
 * Copyright 2010-2014 Guoqiang Chen. All rights reserved.
 * Email: subchen@gmail.com
 *
 * 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 {
    public static String unescapeJava(String value) {
        if (value == null || value.length() == 0) {
            return value;
        }
        StringBuilder buf = null;
        int len = value.length();
        int len1 = len - 1;
        for (int i = 0; i < len; i++) {
            char ch = value.charAt(i);
            if (ch == '\\' && i < len1) {
                int j = i;
                i++;
                ch = value.charAt(i);
                switch (ch) {
                case '\\':
                    ch = '\\';
                    break;
                case '\"':
                    ch = '\"';
                    break;
                case '\'':
                    ch = '\'';
                    break;
                case 't':
                    ch = '\t';
                    break;
                case 'n':
                    ch = '\n';
                    break;
                case 'r':
                    ch = '\r';
                    break;
                case 'b':
                    ch = '\b';
                    break;
                case 'f':
                    ch = '\f';
                    break;
                default:
                    j--;
                }
                if (buf == null) {
                    buf = new StringBuilder(len);
                    if (j > 0) {
                        buf.append(value.substring(0, j));
                    }
                }
                buf.append(ch);
            } else if (buf != null) {
                buf.append(ch);
            }
        }
        if (buf != null) {
            return buf.toString();
        }
        return value;
    }
}

Related

  1. unescapeJava(final String str)
  2. unescapeJava(final String str)
  3. unescapeJava(String escaped)
  4. unescapeJava(String s)
  5. unescapeJava(String str)