Java String Quote quote(CharSequence value)

Description

quote

License

Open Source License

Declaration

private static String quote(CharSequence value) 

Method Source Code

//package com.java2s;
/*//ww  w  . j a  v  a  2 s  .co m
 * Copyright (c) 2013, 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.
 */

public class Main {
    private static String quote(CharSequence value) {
        StringBuilder builder = new StringBuilder(value.length() + 2);
        builder.append('"');
        for (int i = 0; i < value.length(); i++) {
            char c = value.charAt(i);
            switch (c) {
            case '"':
                builder.append("\\\"");
                break;
            case '\\':
                builder.append("\\\\");
                break;
            case '\b':
                builder.append("\\b");
                break;
            case '\f':
                builder.append("\\f");
                break;
            case '\n':
                builder.append("\\n");
                break;
            case '\r':
                builder.append("\\r");
                break;
            case '\t':
                builder.append("\\t");
                break;
            default: {
                if (c < ' ') {
                    builder.append("\\u00");
                    builder.append(Character.forDigit((c >> 4) & 0xF, 16));
                    builder.append(Character.forDigit(c & 0xF, 16));
                } else {
                    builder.append(c);
                }
            }
            }
        }
        builder.append('"');
        return builder.toString();
    }
}

Related

1. quote(CharSequence cs)
2. quote(CharSequence str)
3. quote(final CharSequence original)
4. quote(final CharSequence phrase)
5. quote(final String s)
6. quote(final String str)