/*
* 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.wicket.util.parse.metapattern.parsers;
import org.apache.wicket.util.parse.metapattern.MetaPattern;
/**
* Parses out strings separated by commas.
* <p>
* Notes:
* <p>
* <ul>
* <li>It'll not trim the elements (it'll not remove whitespace)</li>
* <li>It is able to handle quotes like "a", 'b', "b,c" etc..</li>
* <li>But no escapes like "c\"d"</li>
* <li>Empty list elements like "a,," are not supported. It'll return the "a" only.</li>
* </ul>
*
* @author Jonathan Locke
*/
public final class CommaSeparatedVariableParser extends ListParser
{
/** Pattern to use. */
private static final MetaPattern patternEntry = new MetaPattern(
MetaPattern.OPTIONAL_WHITESPACE, MetaPattern.STRING, MetaPattern.OPTIONAL_WHITESPACE);
/**
* Construct a new parser with parameter 'input' to be parsed. Base classes provide the method
* to access the elements of the input parsed.
*
* @param input
* to parse
*/
public CommaSeparatedVariableParser(final CharSequence input)
{
super(patternEntry, MetaPattern.COMMA, input);
}
}