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• PatternMatcher.java

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org.eclipse.jetty.util.PatternMatcher Maven / Gradle / Ivy

//
//  ========================================================================
//  Copyright (c) 1995-2012 Mort Bay Consulting Pty. Ltd.
//  ------------------------------------------------------------------------
//  All rights reserved. This program and the accompanying materials
//  are made available under the terms of the Eclipse Public License v1.0
//  and Apache License v2.0 which accompanies this distribution.
//
//      The Eclipse Public License is available at
//      http://www.eclipse.org/legal/epl-v10.html
//
//      The Apache License v2.0 is available at
//      http://www.opensource.org/licenses/apache2.0.php
//
//  You may elect to redistribute this code under either of these licenses.
//  ========================================================================
//

package org.eclipse.jetty.util;

import java.net.URI;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Pattern;

public abstract class PatternMatcher
{
    public abstract void matched (URI uri) throws Exception;
    
    
    /**
     * Find jar names from the provided list matching a pattern.
     * 
     * If the pattern is null and isNullInclusive is true, then
     * all jar names will match.
     * 
     * A pattern is a set of acceptable jar names. Each acceptable
     * jar name is a regex. Each regex can be separated by either a
     * "," or a "|". If you use a "|" this or's together the jar
     * name patterns. This means that ordering of the matches is
     * unimportant to you. If instead, you want to match particular
     * jar names, and you want to match them in order, you should
     * separate the regexs with "," instead. 
     * 
     * Eg "aaa-.*\\.jar|bbb-.*\\.jar"
     * Will iterate over the jar names and match
     * in any order.
     * 
     * Eg "aaa-*\\.jar,bbb-.*\\.jar"
     * Will iterate over the jar names, matching
     * all those starting with "aaa-" first, then "bbb-".
     *
     * @param pattern the pattern
     * @param uris the uris to test the pattern against
     * @param isNullInclusive if true, an empty pattern means all names match, if false, none match
     * @throws Exception
     */
    public void match (Pattern pattern, URI[] uris, boolean isNullInclusive)
    throws Exception
    {
        if (uris!=null)
        {
            String[] patterns = (pattern==null?null:pattern.pattern().split(","));

            List subPatterns = new ArrayList();
            for (int i=0; patterns!=null && i