ExcludeUtils.java

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2009 Jonas Fonseca <fonseca@diku.dk>
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common
 * Development and Distribution License("CDDL") (collectively, the
 * "License"). You may not use this file except in compliance with the
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 * License.  When distributing the software, include this License Header
 * Notice in each file.
 *
 * This particular file is subject to the "Classpath" exception as provided
 * by Sun in the GPL Version 2 section of the License file that
 * accompanied this code. If applicable, add the following below the
 * License Header, with the fields enclosed by brackets [] replaced by
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 * If you wish your version of this file to be governed by only the CDDL
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 * your version of this file under either the CDDL, the GPL Version 2 or
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 * However, if you add GPL Version 2 code and therefore, elected the GPL
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package org.nbgit.util.exclude;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;

class ExcludeUtils {

    private ExcludeUtils() {
    }

    static PathPatternList readExcludeFile(File file, String basePath) {
        if (!file.exists() || !file.canRead()) {
            return null;
        }
        BufferedReader reader = null;
        PathPatternList list = null;
        try {
            reader = new BufferedReader(new FileReader(file));
            String line;
            while ((line = reader.readLine()) != null) {
                if (line.length() > 0 && line.charAt(0) != '#') {
                    if (list == null)
                        list = new PathPatternList(basePath);
                    list.add(line);
                }
            }
        } catch (Throwable error) {
            return null;
        } finally {
            if (reader != null) {
                try {
                    reader.close();
                } catch (IOException e) {
                }
            }
        }
        return list;
    }

    static String getRelativePath(File wd, File file) {
        int skip = file.getPath().length() > wd.getPath().length() ? 1 : 0;
        String relName = file.getPath().substring(wd.getPath().length() + skip);
        if (File.separatorChar != '/') {
            relName = relName.replace(File.separatorChar, '/');
        }
        return relName;
    }
}