Java String Unquote unquoteString(String s)

Description

Unquote and unescape an HTTP <code>quoted-string</code>: http://www.w3.org/Protocols/rfc2616/rfc2616-sec2.html#sec2.2 Does nothing if <code>s</code> is not quoted.

License

Apache License

Parameter

Parameter	Description
s	<code>quoted-string</code> to unquote

Return

s with quotes and backslash-escaped characters unescaped

Declaration

public static String unquoteString(String s)

Method Source Code

//package com.java2s;
/*/*from   ww  w.ja va2  s.  co  m*/
 * This file is provided to you 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 {
    /**
     * Unquote and unescape an HTTP <code>quoted-string</code>:
     * 
     * http://www.w3.org/Protocols/rfc2616/rfc2616-sec2.html#sec2.2
     * 
     * Does nothing if <code>s</code> is not quoted.
     * 
     * @param s
     *            <code>quoted-string</code> to unquote
     * @return s with quotes and backslash-escaped characters unescaped
     */
    public static String unquoteString(String s) {
        if (s.startsWith("\"") && s.endsWith("\"")) {
            s = s.substring(1, s.length() - 1);
        }
        return s.replaceAll("\\\\(.)", "$1");
    }
}