Example usage for org.apache.commons.compress.archivers.sevenz SevenZMethod COPY

Introduction

In this page you can find the example usage for org.apache.commons.compress.archivers.sevenz SevenZMethod COPY.

Prototype

SevenZMethod COPY

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Document

no compression at all

Usage

From source file:at.treedb.backup.Export.java

/**
 * Writes an uncompressed binary archive data file.
 * //from  ww  w  . j  a v  a2  s .  co  m
 * @param path
 *            archive path
 * @param data
 *            binary data
 * @param date
 *            file creation date
 * @throws IOException
 */
private void write(String path, byte data[], Date date) throws IOException {
    SevenZArchiveEntry entry = createFileEntry(path, date);
    entry.setContentMethods(Arrays.asList(new SevenZMethodConfiguration(SevenZMethod.COPY)));
    sevenZOutput.putArchiveEntry(entry);
    System.out.println(path);
    sevenZOutput.write(data);
    sevenZOutput.closeArchiveEntry();
}

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From source file:at.treedb.backup.Export.java

/**
 * <p>/*from  w w  w.  j a  v  a 2 s  . c  om*/
 * Tries to find the best compression method for the file data. Actual the
 * code only sets for compressed binary formats (e.g. jpeg) the compression
 * method to COPY.
 * </p>
 *
 * 
 * @param data
 *            binary data
 * @return compression method
 */
public static SevenZMethod findBestCompressionMethod(byte[] data, SevenZMethod compressionMethod) {
    try {
        MimeType mtype = ContentInfo.getContentInfo(data);
        if (mtype != null) {
            switch (mtype) {
            case JPG:
            case PNG:
            case MP4:
            case WEBM:
            case FLV:
                return SevenZMethod.COPY;
            }
        }
    } catch (Exception e) {
        return compressionMethod;
    }
    return compressionMethod;
}

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