package org.apache.archiva;

/*
 * 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.
 */

/**
 * Provides reusable path pattern matching.  PathPattern is preferable
 * to equivalent SelectorUtils methods if you need to execute multiple
 * matching with the same pattern because here the pattern itself will
 * be parsed only once.
 * @see SelectorUtils#matchPath(String, String)
 * @see SelectorUtils#matchPath(String, String, boolean)
 *
 * From Ant 1.8.0
 */
public class TokenizedPattern {

    private final String pattern;
    private final String tokenizedPattern[];

    /**
    * Initialize the PathPattern by parsing it. 
    * @param pattern The pattern to match against. Must not be
    *                <code>null</code>.
    */
    public TokenizedPattern(String pattern)
    {
        this(pattern, SelectorUtils.tokenizePathAsArray(pattern));
    }
    
    TokenizedPattern(String pattern, String[] tokens) {
        this.pattern = pattern;
        this.tokenizedPattern = tokens;
    }

    /**
     * Tests whether or not a given path matches a given pattern.
     *
     * @param path    The path to match, as a String. Must not be
     *                <code>null</code>.
     * @param isCaseSensitive Whether or not matching should be performed
     *                        case sensitively.
     *
     * @return <code>true</code> if the pattern matches against the string,
     *         or <code>false</code> otherwise.
     */
    public boolean matchPath(String path, boolean isCaseSensitive)
    {
        return SelectorUtils.matchPath(tokenizedPattern, SelectorUtils.tokenizePathAsArray( path ),
                                       isCaseSensitive);
    }

    /**
     * @return The pattern String
     */
    public String toString() {
        return pattern;
    }

    /**
     * true if the original patterns are equal.
     */
    public boolean equals(Object o) {
        return o instanceof TokenizedPattern
            && pattern.equals(((TokenizedPattern) o).pattern);
    }

    public int hashCode() {
        return pattern.hashCode();
    }

}