org.jboss.qa.jenkins.test.executor.utils.unpack.GUnZipper.java Source code

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Here is the source code for org.jboss.qa.jenkins.test.executor.utils.unpack.GUnZipper.java

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/*
 * Copyright 2015 Red Hat Inc. and/or its affiliates and other contributors.
 *
 * 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.jboss.qa.jenkins.test.executor.utils.unpack;

import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream;
import org.apache.commons.io.IOUtils;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;

public class GUnZipper extends UnPacker {

    private static final String TYPE = "tar.gz";

    private static Set<TarArchiveEntry> getEntries(TarArchiveInputStream tarIn) throws IOException {
        final Set<TarArchiveEntry> entries = new HashSet<>();
        while (true) {
            final TarArchiveEntry entry = tarIn.getNextTarEntry();
            if (entry == null) {
                break;
            }
            entries.add(entry);
        }
        return entries;
    }

    public String type() {
        return TYPE;
    }

    @Override
    public void unpack(File archive, File destination) throws IOException {
        try (FileInputStream in = new FileInputStream(archive);
                GzipCompressorInputStream gzIn = new GzipCompressorInputStream(in);
                TarArchiveInputStream tarIn = new TarArchiveInputStream(gzIn)) {
            final Set<TarArchiveEntry> entries = getEntries(tarIn);

            if (ignoreRootFolders) {
                pathSegmentsToTrim = countRootFolders(entries);
            }

            for (TarArchiveEntry entry : entries) {
                if (entry.isDirectory()) {
                    continue;
                }

                final File file = new File(destination, trimPathSegments(entry.getName(), pathSegmentsToTrim));
                if (!file.getParentFile().exists()) {
                    file.getParentFile().mkdirs();
                }

                try (FileOutputStream fos = new FileOutputStream(file)) {
                    IOUtils.copy(tarIn, fos);

                    // check for user-executable bit on entry and apply to file
                    if ((entry.getMode() & 0100) != 0) {
                        file.setExecutable(true);
                    }
                }
            }
        }
    }
}