Java String Quote quote(String str)

Description

quote

License

Apache License

Declaration

public static String quote(String str) 

Method Source Code

//package com.java2s;
/*/*from www  .  j  a v a  2 s .  c  o m*/
 * Copyright 2011 cruxframework.org.
 * 
 * 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 quote(String str, boolean nullToBlank) {
        if (str == null)
            return (nullToBlank ? "\"\"" : null);

        int cursor = 0;
        int strLenght = str.length();
        StringBuilder sb = new StringBuilder(strLenght + 16);

        sb.append("\"");
        while (cursor < strLenght) {
            char nextchar = str.charAt(cursor++);
            if (nextchar == '\\') {
                sb.append("\\\\"); // Substitue \ por \\
                continue;
            } else if (nextchar == '"') {
                sb.append("\\\""); // Substitue " por \"
                continue;
            } else if (nextchar == '\r') {
                if ((cursor + 1) < strLenght && str.charAt(cursor + 1) == '\n')
                    cursor++;
                sb.append("\\n"); // Substitue quebra de linha por \n
                continue;
            } else if (nextchar == '\n') {
                sb.append("\\n"); // Substitue quebra de linha por \n
                continue;
            }
            sb.append(nextchar);
        }
        sb.append("\"");

        return sb.toString();
    }

    public static String quote(String str) {
        return quote(str, true);
    }
}

Related

1. quote(String s, String nullResult)
2. quote(String s, String specials, char quoteChar)
3. quote(String str)
4. quote(String str)
5. quote(String str)
6. quote(String str)
7. quote(String str)
8. quote(String str)
9. quote(String str)