org.codehaus.plexus.archiver.zstd.ZstdUnArchiver Maven / Gradle / Ivy

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/*
 * Copyright 2022 The Apache Software Foundation
 *
 * 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.codehaus.plexus.archiver.zstd;

import javax.annotation.Nonnull;
import javax.inject.Named;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;

import org.apache.commons.compress.compressors.zstandard.ZstdCompressorInputStream;
import org.codehaus.plexus.archiver.AbstractUnArchiver;
import org.codehaus.plexus.archiver.ArchiverException;

import static org.codehaus.plexus.archiver.util.Streams.bufferedInputStream;
import static org.codehaus.plexus.archiver.util.Streams.bufferedOutputStream;
import static org.codehaus.plexus.archiver.util.Streams.copyFully;
import static org.codehaus.plexus.archiver.util.Streams.fileInputStream;
import static org.codehaus.plexus.archiver.util.Streams.fileOutputStream;

/**
 * Unarchiver for zstd-compressed files.
 */
@Named("zst")
public class ZstdUnArchiver extends AbstractUnArchiver {

    private static final String OPERATION_ZSTD = "zstd";

    public ZstdUnArchiver() {}

    public ZstdUnArchiver(File source) {
        super(source);
    }

    @Override
    protected void execute() throws ArchiverException {
        if (getSourceFile().lastModified() > getDestFile().lastModified()) {
            getLogger()
                    .info("Expanding " + getSourceFile().getAbsolutePath() + " to "
                            + getDestFile().getAbsolutePath());

            copyFully(
                    getZstdInputStream(bufferedInputStream(fileInputStream(getSourceFile(), OPERATION_ZSTD))),
                    bufferedOutputStream(fileOutputStream(getDestFile(), OPERATION_ZSTD)),
                    OPERATION_ZSTD);
        }
    }

    public static @Nonnull ZstdCompressorInputStream getZstdInputStream(InputStream in) throws ArchiverException {
        try {
            return new ZstdCompressorInputStream(in);
        } catch (IOException ioe) {
            throw new ArchiverException("Trouble creating Zstd compressor, invalid file ?", ioe);
        }
    }

    @Override
    protected void execute(String path, File outputDirectory) throws ArchiverException {
        throw new UnsupportedOperationException("Targeted execution not supported in zstd format");
    }
}