src/main/java/org/apache/maven/plugins/assembly/utils/AssemblyFileUtils.java

/*
 * 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.maven.plugins.assembly.utils;

import java.io.File;
import java.util.Locale;

import org.codehaus.plexus.components.io.fileselectors.FileInfo;

/**
 *
 */
public final class AssemblyFileUtils {

    private AssemblyFileUtils() {
        // no op
    }

    public static String makePathRelativeTo(String path, final File basedir) {
        if (basedir == null) {
            return path;
        }

        if (path == null) {
            return null;
        }

        path = path.trim();

        String base = basedir.getAbsolutePath();
        if (path.startsWith(base)) {
            path = path.substring(base.length());
            if (path.length() > 0) {
                if (path.startsWith("/") || path.startsWith("\\")) {
                    path = path.substring(1);
                }
            }

            if (path.length() == 0) {
                path = ".";
            }
        }

        if (!new File(path).isAbsolute()) {
            path = path.replace('\\', '/');
        }

        return path;
    }

    @SuppressWarnings("ResultOfMethodCallIgnored")
    public static void verifyTempDirectoryAvailability(final File tempDir) {
        if (!tempDir.exists()) {
            tempDir.mkdirs();
        }
    }

    private static String normalizePath(String path) {
        return path.replace('\\', '/');
    }

    public static String normalizeFileInfo(FileInfo fileInfo) {
        String name = fileInfo.getName();
        name = normalizePath(name);
        return name.replace(File.separatorChar, '/'); // How can this be anything but a no-op
    }

    public static boolean isPropertyFile(String sourceName) {
        return sourceName.toLowerCase(Locale.ENGLISH).endsWith(".properties");
    }

    public static boolean isPropertyFile(File file) {
        return isPropertyFile(file.getName());
    }

    /**
     * This method exists because {@link File#isAbsolute()} is not OS independent.
     *
     * In addition to the check in {@link File#isAbsolute()} we will also test for a leading '/'.
     *
     * @return {@code true} if {@code File#isAbsolute()} or starts with a '/'
     */
    public static boolean isAbsolutePath(File dir) {
        return dir != null && (dir.isAbsolute() || dir.getPath().startsWith("\\")); // on Win* platforms
    }
}