Package io.deephaven.io

Class CompressedFileUtil

java.lang.Object

io.deephaven.io.CompressedFileUtil

public class CompressedFileUtil
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	CompressedFileUtil.FileInputStreamFactory
static class	CompressedFileUtil.FilePipe

Field Summary

Fields

Modifier and Type	Field	Description
static final int	BZIP2_MAGIC
static final String[]	COMPRESSION_EXTENSIONS
static final long	UINT_TO_LONG

Constructor Summary

Constructors

Constructor	Description
CompressedFileUtil()

Method Summary

Modifier and Type	Method	Description
static String	addCompressionExtensionIfNeeded(String sFileName)	If the given file doesn't exist, looks to see if a compressed version of the file exists.
static int	bunzip2(File file)	Unzip the file
static void	bzip2(String archiveName, String baseDir, String[] inputFiles)	Files need to be in the same directory, otherwise Tar complains about windows paths
static InputStreamFactory	createInputStreamFactoryForPossiblyCompressedStream(InputStreamFactory inputStreamFactory)
static InputStreamFactory	createInputStreamFactoryForPossiblyTarredStream(InputStreamFactory inputStreamFactory)
static int	getMagic2(InputStream testStream)
static int	getMagic4(InputStream testStream, int nMagic2)
static long	getMagic6(InputStream testStream, int nMagic4)
static InputStream	openPossiblyCompressedFile(InputStreamFactory inputStreamFactory)	Open the file, automatically determining if it has been zipped, GZipped, BZip2'd or not.
static InputStream	openPossiblyCompressedFile(String sFileName)
static InputStream	openPossiblyCompressedFile(String sFileName, int bufferedSize)
static InputStream	openPossiblyCompressedFile(String sFileName, int bufferedSize, Boolean useMicrosPcapEmulation)
static InputStream	openPossiblyCompressedFile(String sFileName, Boolean useMicrosPcapEmulation)	Open the file, automatically determining if it has been zipped, GZipped, BZip2'd or not.
static InputStream	openPossiblyCompressedFiles(String[] fileNames)
static void	unbzip2(File archive)
static void	zipFile(File inputFile, File zipFilePath)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

UINT_TO_LONG

public static final long UINT_TO_LONG

See Also:

• Constant Field Values

BZIP2_MAGIC

public static final int BZIP2_MAGIC

See Also:

• Constant Field Values

COMPRESSION_EXTENSIONS

public static final String[] COMPRESSION_EXTENSIONS

Constructor Details

CompressedFileUtil

public CompressedFileUtil()

Method Details

bunzip2

public static int bunzip2(File file)
                   throws IOException

Unzip the file

Parameters:

file - The file to bunzip2

Throws:

IOException

bzip2

public static void bzip2(String archiveName,
 String baseDir,
 String[] inputFiles)
                  throws IOException

Files need to be in the same directory, otherwise Tar complains about windows paths

Parameters:

archiveName -

baseDir - the directory where the input files are located

inputFiles -

Throws:

IOException

unbzip2

public static void unbzip2(File archive)
                    throws IOException

Throws:

IOException

zipFile

public static void zipFile(File inputFile,
 File zipFilePath)
                    throws IOException

Throws:

IOException

openPossiblyCompressedFiles

public static InputStream openPossiblyCompressedFiles(String[] fileNames)
                                               throws IOException

Throws:

IOException

addCompressionExtensionIfNeeded

public static String addCompressionExtensionIfNeeded(String sFileName)

If the given file doesn't exist, looks to see if a compressed version of the file exists. If no file is found, returns the original file name.

openPossiblyCompressedFile

public static InputStream openPossiblyCompressedFile(String sFileName,
 Boolean useMicrosPcapEmulation)
                                              throws IOException

Open the file, automatically determining if it has been zipped, GZipped, BZip2'd or not. The returned input stream will be buffered. See also addCompressionExtensionIfNeeded(java.lang.String).

Throws:

IOException

openPossiblyCompressedFile

public static InputStream openPossiblyCompressedFile(String sFileName)
                                              throws IOException

Throws:

IOException

openPossiblyCompressedFile

public static InputStream openPossiblyCompressedFile(String sFileName,
 int bufferedSize,
 Boolean useMicrosPcapEmulation)
                                              throws IOException

Throws:

IOException

openPossiblyCompressedFile

public static InputStream openPossiblyCompressedFile(String sFileName,
 int bufferedSize)
                                              throws IOException

Throws:

IOException

openPossiblyCompressedFile

public static InputStream openPossiblyCompressedFile(InputStreamFactory inputStreamFactory)
                                              throws IOException

Open the file, automatically determining if it has been zipped, GZipped, BZip2'd or not.

Throws:

IOException

createInputStreamFactoryForPossiblyCompressedStream

public static InputStreamFactory createInputStreamFactoryForPossiblyCompressedStream(InputStreamFactory inputStreamFactory)
                                                                              throws IOException

Throws:

IOException

getMagic6

public static long getMagic6(InputStream testStream,
 int nMagic4)
                      throws IOException

Throws:

IOException

getMagic4

public static int getMagic4(InputStream testStream,
 int nMagic2)
                     throws IOException

Throws:

IOException

getMagic2

public static int getMagic2(InputStream testStream)
                     throws IOException

Throws:

IOException

createInputStreamFactoryForPossiblyTarredStream

public static InputStreamFactory createInputStreamFactoryForPossiblyTarredStream(InputStreamFactory inputStreamFactory)
                                                                          throws IOException

Throws:

IOException