/*
 * Copyright 2004-2015 the Seasar Foundation and the Others.
 *
 * Licensed 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.seasar.extension.jdbc.gen.internal.util;

import java.io.File;
import java.io.FilenameFilter;
import java.util.regex.Pattern;

/**
 * 一般的に除外すべき名前をフィルタする{@link FilenameFilter}の実装クラスです。
 * 
 * @author taedium
 */
public class DefaultExcludesFilenameFilter implements FilenameFilter {

    /** 除外すべき名前を表すデフォルトの正規表現 */
    protected static String defaultFilterRegex = "^(.*~|#.*#|\\.#.*|%.*%|\\._.*|CVS|\\.cvsignore|SCCS|vssver\\.scc|\\.svn|\\.DS_Store)$";

    /** 除外名のパターン */
    protected static Pattern filterPattern;

    static {
        resetFilterPattern();
    }

    /**
     * 除外すべき名前を表すデフォルトの正規表現でフィルタパターンをリセットします。
     */
    public static void resetFilterPattern() {
        filterPattern = Pattern.compile(defaultFilterRegex);
    }

    /**
     * 除外すべき名前を表す正規表現を設定します。
     * 
     * @param filterRegex
     *            除外すべき名前を表す正規表現
     */
    public static void setFilterRegex(String filterRegex) {
        filterPattern = Pattern.compile(filterRegex);
    }

    public boolean accept(File dir, String name) {
        return !filterPattern.matcher(name).matches();
    }

}