Example usage for org.apache.commons.compress.compressors.gzip GzipCompressorInputStream read

Introduction

In this page you can find the example usage for org.apache.commons.compress.compressors.gzip GzipCompressorInputStream read.

Prototype

public int read(byte[] b, int from, int length) throws IOException 

Source Link

Usage

From source file:com.dubture.symfony.core.util.UncompressUtils.java

/**
 * Uncompress a gzip archive and returns the file where it has been
 * extracted.//from  w ww .ja  v a2s  .  com
 *
 * @param archiveFile The archive file to uncompress
 * @param outputDirectory The output directory where to put the uncompressed archive
 *
 * @return The output file where the archive has been uncompressed
 *
 * @throws IOException When a problem occurs with either the input or output stream
 */
public static File uncompressGzipArchive(File archiveFile, File outputDirectory) throws IOException {
    FileInputStream fileInputStream = new FileInputStream(archiveFile);
    BufferedInputStream bufferedInputStream = new BufferedInputStream(fileInputStream);
    GzipCompressorInputStream gzipInputStream = new GzipCompressorInputStream(bufferedInputStream);

    String tarArchiveFilename = GzipUtils.getUncompressedFilename(archiveFile.getName());
    File outputFile = new File(outputDirectory, tarArchiveFilename);
    FileOutputStream outputStream = new FileOutputStream(outputFile);

    int byteReadCount = 0;
    final byte[] data = new byte[BUFFER_SIZE];

    try {
        while ((byteReadCount = gzipInputStream.read(data, 0, BUFFER_SIZE)) != -1) {
            outputStream.write(data, 0, byteReadCount);
        }
    } finally {
        outputStream.close();
        gzipInputStream.close();
    }

    return outputFile;
}

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