manager/core/src/main/java/org/apache/james/managesieve/util/ParserUtils.java

/*
 *   Licensed to the Apache Software Foundation (ASF) under one
 *   or more contributor license agreements.  See the NOTICE file
 *   distributed with this work for additional information
 *   regarding copyright ownership.  The ASF licenses this file
 *   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.
 *
 */

package org.apache.james.managesieve.util;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * <code>ParserUtils</code>
 */
public class ParserUtils {

    private static final Pattern SCRIPT_NAME_REGEX = Pattern.compile("[^\\s\"']+|\"[^\"]*\"|'[^']*'");

    public static String getScriptName(String args) {
        Matcher regexMatcher = SCRIPT_NAME_REGEX.matcher(args);
        regexMatcher.find();
        String name = null;
        try {
        name = regexMatcher.group();
        } catch(IllegalStateException ex)
        {
            // no op
        }
        return name;
    }

    public static String unquote(String quoted) {
        String result = quoted;
        if (quoted.startsWith("\"") && quoted.endsWith("\"")) {
            result = quoted.substring(1, quoted.length() - 1);
        } else if (quoted.startsWith("'") && quoted.endsWith("'")) {
            result = quoted.substring(1, quoted.length() - 1);
        }
        return result;
    }

}