Bzip2Archive
Inheritance: java.lang.Object, com.aspose.zip.ILicenseStateProvider
All Implemented Interfaces: com.aspose.ms.System.IDisposable, com.aspose.zip.IArchive, java.lang.AutoCloseable
public class Bzip2Archive extends ILicenseStateProvider implements System.IDisposable, IArchive, AutoCloseable
This class represents bzip2 archive file. Use it to compose or extract bzip2 archives.
bzip2 compresses files using the Burrows-Wheeler block sorting text compression algorithm, and Huffman coding. See more: Bzip2
Constructors
Constructor | Description |
---|---|
Bzip2Archive() | Initializes a new instance of the Bzip2Archive class prepared for compressing. |
Bzip2Archive(InputStream sourceStream) | Initializes a new instance of the Bzip2Archive class prepared for decompressing. |
Bzip2Archive(String path) | Initializes a new instance of the Bzip2Archive class prepared for decompressing. |
Methods
Method | Description |
---|---|
close() | {@inheritDoc} |
dispose() | Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources. |
extract(OutputStream destination) | Extracts the archive to the stream provided. |
extract(String path) | Extracts the archive to the file by path. |
extractToDirectory(String destinationDirectory) | Extracts content of the archive to the directory provided. |
getFileEntries() | Gets entries of IArchiveFileEntry type constituting the bzip2 archive. |
open() | Opens the archive for extraction and provides a stream with archive content. |
save(OutputStream outputStream) | Saves archive to the stream provided. |
save(OutputStream outputStream, Bzip2SaveOptions saveOptions) | Saves archive to the stream provided. |
save(String destinationFileName) | Saves archive to destination file provided. |
save(String destinationFileName, Bzip2SaveOptions saveOptions) | Saves archive to destination file provided. |
setSource(TarArchive tarArchive) | Sets the content to be compressed within the archive. |
setSource(TarArchive tarArchive, TarFormat format) | Sets the content to be compressed within the archive. |
setSource(File file) | Sets the content to be compressed within the archive. |
setSource(InputStream source) | Sets the content to be compressed within the archive. |
setSource(String path) | Sets the content to be compressed within the archive. |
Bzip2Archive()
public Bzip2Archive()
Initializes a new instance of the Bzip2Archive class prepared for compressing.
The following example shows how to compress a file.
try (Bzip2Archive archive = new Bzip2Archive()) {
archive.setSource("data.bin");
archive.save("archive.bz2");
}
Bzip2Archive(InputStream sourceStream)
public Bzip2Archive(InputStream sourceStream)
Initializes a new instance of the Bzip2Archive class prepared for decompressing.
Open an archive from a stream and extract it to a MemoryStream
ByteArrayOutputStream ms = new ByteArrayOutputStream();
try (Bzip2Archive archive = new Bzip2Archive(new FileInputStream("archive.bz2"))) {
InputStream decompressed = archive.open();
byte[] b = new byte[8192];
int bytesRead;
while (0 < (bytesRead = decompressed.read(b, 0, b.length))) {
ms.write(b, 0, bytesRead);
}
} catch (IOException ex) {
System.out.println(ex);
}
This constructor does not decompress. See open() method for decompressing.
Parameters:
Parameter | Type | Description |
---|---|---|
sourceStream | java.io.InputStream | The source of the archive. |
Bzip2Archive(String path)
public Bzip2Archive(String path)
Initializes a new instance of the Bzip2Archive class prepared for decompressing.
Open an archive from file by path and extract it to a MemoryStream
ByteArrayOutputStream ms = new ByteArrayOutputStream();
try (Bzip2Archive archive = new Bzip2Archive("archive.bz2")) {
InputStream decompressed = archive.open();
byte[] b = new byte[8192];
int bytesRead;
while (0 < (bytesRead = decompressed.read(b, 0, b.length))) {
ms.write(b, 0, bytesRead);
}
} catch (IOException ex) {
System.out.println(ex);
}
This constructor does not decompress. See open() method for decompressing.
Parameters:
Parameter | Type | Description |
---|---|---|
path | java.lang.String | The path to the archive file. |
close()
public void close()
dispose()
public final void dispose()
Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
extract(OutputStream destination)
public final void extract(OutputStream destination)
Extracts the archive to the stream provided.
try (Bzip2Archive archive = new Bzip2Archive("archive.bz2")) {
archive.extract(httpResponseStream);
}
Parameters:
Parameter | Type | Description |
---|---|---|
destination | java.io.OutputStream | Destination stream. Must be writable. |
extract(String path)
public final File extract(String path)
Extracts the archive to the file by path.
Parameters:
Parameter | Type | Description |
---|---|---|
path | java.lang.String | The path to destination file. If the file already exists, it will be overwritten. |
Returns: java.io.File - Info of extracted file.
extractToDirectory(String destinationDirectory)
public final void extractToDirectory(String destinationDirectory)
Extracts content of the archive to the directory provided.
Parameters:
Parameter | Type | Description |
---|---|---|
destinationDirectory | java.lang.String | The path to the directory to place the extracted files in. |
If the directory does not exist, it will be created. |
getFileEntries()
public final Iterable<IArchiveFileEntry> getFileEntries()
Gets entries of IArchiveFileEntry type constituting the bzip2 archive.
Returns: java.lang.Iterable<com.aspose.zip.IArchiveFileEntry> - entries of IArchiveFileEntry type constituting the bzip2 archive.
open()
public final InputStream open()
Opens the archive for extraction and provides a stream with archive content.
Usage:
try (InputStream decompressed = archive.open()) {
byte[] buffer = new byte[8192];
int bytesRead;
while (0 < (bytesRead = decompressed.read(buffer, 0, buffer.length))) {
fileStream.write(buffer, 0, bytesRead);
}
} catch (IOException ex) {
System.out.println(ex);
}
Read from the stream to get original content of file. See examples section.
Returns: java.io.InputStream - The stream that represents the contents of the archive.
save(OutputStream outputStream)
public final void save(OutputStream outputStream)
Saves archive to the stream provided.
Writes compressed data to an output stream.
try (Bzip2Archive archive = new Bzip2Archive()) {
archive.setSource(new File("data.bin"));
archive.save(outputStream);
}
Parameters:
Parameter | Type | Description |
---|---|---|
outputStream | java.io.OutputStream | Destination stream. |
outputStream
must be writable. |
save(OutputStream outputStream, Bzip2SaveOptions saveOptions)
public final void save(OutputStream outputStream, Bzip2SaveOptions saveOptions)
Saves archive to the stream provided.
Writes compressed data to an output stream.
try (Bzip2Archive archive = new Bzip2Archive()) {
archive.setSource(new File("data.bin"));
archive.save(outputStream);
}
Parameters:
Parameter | Type | Description |
---|---|---|
outputStream | java.io.OutputStream | Destination stream. |
outputStream
must be writable. |
| saveOptions | Bzip2SaveOptions | Options for saving a bzip2 archive. If not specified, 900 Kb block size would be used. |
save(String destinationFileName)
public final void save(String destinationFileName)
Saves archive to destination file provided.
Writes compressed data to file.
try (Bzip2Archive archive = new Bzip2Archive()) {
archive.setSource(new File("data.bin"));
archive.save("data.bz2");
}
Parameters:
Parameter | Type | Description |
---|---|---|
destinationFileName | java.lang.String | The path of the archive to be created. If the specified file name points to an existing file, it will be overwritten. |
save(String destinationFileName, Bzip2SaveOptions saveOptions)
public final void save(String destinationFileName, Bzip2SaveOptions saveOptions)
Saves archive to destination file provided.
Writes compressed data to file.
try (Bzip2Archive archive = new Bzip2Archive()) {
archive.setSource(new File("data.bin"));
archive.save("data.bz2");
}
Parameters:
Parameter | Type | Description |
---|---|---|
destinationFileName | java.lang.String | The path of the archive to be created. If the specified file name points to an existing file, it will be overwritten. |
saveOptions | Bzip2SaveOptions | Options for saving a bzip2 archive. If not specified, 900 Kb block size would be used. |
setSource(TarArchive tarArchive)
public final void setSource(TarArchive tarArchive)
Sets the content to be compressed within the archive.
try (TarArchive tarArchive = new TarArchive()) {
tarArchive.createEntry("first.bin", "data1.bin");
tarArchive.createEntry("second.bin", "data2.bin");
try (Bzip2Archive bzippedArchive = new Bzip2Archive()) {
bzippedArchive.setSource(tarArchive);
bzippedArchive.save("archive.tar.bz2");
}
}
Use this method to compose joint tar.bz2 archive.
Parameters:
Parameter | Type | Description |
---|---|---|
tarArchive | TarArchive | Tar archive to be compressed. |
setSource(TarArchive tarArchive, TarFormat format)
public final void setSource(TarArchive tarArchive, TarFormat format)
Sets the content to be compressed within the archive.
try (TarArchive tarArchive = new TarArchive()) {
tarArchive.createEntry("first.bin", "data1.bin");
tarArchive.createEntry("second.bin", "data2.bin");
try (Bzip2Archive bzippedArchive = new Bzip2Archive()) {
bzippedArchive.setSource(tarArchive);
bzippedArchive.save("archive.tar.bz2");
}
}
Use this method to compose joint tar.bz2 archive.
Parameters:
Parameter | Type | Description |
---|---|---|
tarArchive | TarArchive | Tar archive to be compressed. |
format | TarFormat | Defines tar header format. |
setSource(File file)
public final void setSource(File file)
Sets the content to be compressed within the archive.
try (Bzip2Archive archive = new Bzip2Archive()) {
archive.setSource(new File("data.bin"));
archive.save("archive.bz2");
}
Parameters:
Parameter | Type | Description |
---|---|---|
file | java.io.File | The reference to a file to be compressed. |
setSource(InputStream source)
public final void setSource(InputStream source)
Sets the content to be compressed within the archive.
try (Bzip2Archive archive = new Bzip2Archive()) {
archive.setSource(new ByteArrayInputStream(new byte[] { 0x00, (byte) 0xFF }));
archive.save("archive.bz2");
}
Parameters:
Parameter | Type | Description |
---|---|---|
source | java.io.InputStream | The input stream for the archive. |
setSource(String path)
public final void setSource(String path)
Sets the content to be compressed within the archive.
try (Bzip2Archive archive = new Bzip2Archive()) {
archive.setSource("data.bin");
archive.save("archive.bz2");
}
Parameters:
Parameter | Type | Description |
---|---|---|
path | java.lang.String | Path to file to be compressed. |