Package org.apache.tools.tar

# Class TarOutputStream

java.lang.Object
java.io.OutputStream
java.io.FilterOutputStream
org.apache.tools.tar.TarOutputStream

All Implemented Interfaces:
  `Closeable`, `Flushable`, `AutoCloseable`

public class TarOutputStream extends FilterOutputStream
The TarOutputStream writes a UNIX tar archive as an OutputStream. Methods are provided to put entries, and then write their contents by writing to this stream using write().

## Field Summary

Fields
Modifier and Type
Field
Description
`protected byte[]`
`assemBuf`
`protected int`
`assemLen`
`static final int`
`BIGNUMBER_ERROR`
Fail if a big number (e.g.
`static final int`
`BIGNUMBER_POSIX`
POSIX/PAX extensions are used to store big numbers in the archive.
`static final int`
`BIGNUMBER_STAR`
star/GNU tar/BSD tar extensions are used to store big number in the archive.
`protected TarBuffer`
`buffer`
`protected long`
`currBytes`
`protected String`
`currName`
`protected long`
`currSize`
`protected boolean`
`debug`
`static final int`
`LONGFILE_ERROR`
Fail if a long file name is required in the archive.
`static final int`
`LONGFILE_GNU`
GNU tar extensions are used to store long file names in the archive.
`static final int`
`LONGFILE_POSIX`
POSIX/PAX extensions are used to store long file names in the archive.
`static final int`
`LONGFILE_TRUNCATE`
Long paths will be truncated in the archive.
`protected int`
`longFileMode`
`protected byte[]`
`oneBuf`
`protected byte[]`
`recordBuf`

### Fields inherited from class java.io.FilterOutputStream

`out`

## Constructor Summary

Constructors
Constructor
Description
`TarOutputStream(OutputStream os)`
Constructor for TarInputStream.
`TarOutputStream(OutputStream os, int blockSize)`
Constructor for TarInputStream.
`TarOutputStream(OutputStream os, int blockSize, int recordSize)`
Constructor for TarInputStream.
`TarOutputStream(OutputStream os, int blockSize, int recordSize, String encoding)`
Constructor for TarInputStream.
`TarOutputStream(OutputStream os, int blockSize, String encoding)`
Constructor for TarInputStream.
`TarOutputStream(OutputStream os, String encoding)`
Constructor for TarInputStream.

## Method Summary

Modifier and Type
Method
Description
`void`
`close()`
Ends the TAR archive and closes the underlying OutputStream.
`void`
`closeEntry()`
Close an entry.
`void`
`finish()`
Ends the TAR archive without closing the underlying OutputStream.
`int`
`getRecordSize()`
Get the record size being used by this stream's TarBuffer.
`void`
`putNextEntry(TarEntry entry)`
Put an entry on the output stream.
`void`
`setAddPaxHeadersForNonAsciiNames(boolean b)`
Whether to add a PAX extension header for non-ASCII file names.
`void`
`setBigNumberMode(int bigNumberMode)`
Set the big number mode.
`void`
`setBufferDebug(boolean debug)`
Sets the debugging flag in this stream's TarBuffer.
`void`
`setDebug(boolean debugF)`
Sets the debugging flag.
`void`
`setLongFileMode(int longFileMode)`
Set the long file mode.
`void`
`write(byte[] wBuf)`
Writes bytes to the current tar archive entry.
`void`
`write(byte[] wBuf, int wOffset, int numToWrite)`
Writes bytes to the current tar archive entry.
`void`
`write(int b)`
Writes a byte to the current tar archive entry.

### Methods inherited from class java.io.FilterOutputStream

`flush`

### Methods inherited from class java.io.OutputStream

`nullOutputStream`

### Methods inherited from class java.lang.Object

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

## Field Details

### LONGFILE_ERROR

public static final int LONGFILE_ERROR
Fail if a long file name is required in the archive.

See Also:
  - Constant Field Values

### LONGFILE_TRUNCATE

public static final int LONGFILE_TRUNCATE
Long paths will be truncated in the archive.

See Also:
  - Constant Field Values

### LONGFILE_GNU

public static final int LONGFILE_GNU
GNU tar extensions are used to store long file names in the archive.

See Also:
  - Constant Field Values

### LONGFILE_POSIX

public static final int LONGFILE_POSIX
POSIX/PAX extensions are used to store long file names in the archive.

See Also:
  - Constant Field Values

### BIGNUMBER_ERROR

public static final int BIGNUMBER_ERROR
Fail if a big number (e.g. size > 8GiB) is required in the archive.

See Also:
  - Constant Field Values

### BIGNUMBER_STAR

public static final int BIGNUMBER_STAR
star/GNU tar/BSD tar extensions are used to store big number in the archive.

See Also:
  - Constant Field Values

### BIGNUMBER_POSIX

public static final int BIGNUMBER_POSIX
POSIX/PAX extensions are used to store big numbers in the archive.

See Also:
  - Constant Field Values

### debug

protected boolean debug

### currSize

protected long currSize

### currName

protected String currName

### currBytes

protected long currBytes

### oneBuf

protected byte[] oneBuf

### recordBuf

protected byte[] recordBuf

### assemLen

protected int assemLen

### assemBuf

protected byte[] assemBuf

### buffer

protected TarBuffer buffer

### longFileMode

protected int longFileMode

## Constructor Details

### TarOutputStream

public TarOutputStream(OutputStream os)
Constructor for TarInputStream.

Parameters:
  `os` - the output stream to use

### TarOutputStream

public TarOutputStream(OutputStream os, String encoding)
Constructor for TarInputStream.

Parameters:
  `os` - the output stream to use
  `encoding` - name of the encoding to use for file names

### TarOutputStream

public TarOutputStream(OutputStream os, int blockSize)
Constructor for TarInputStream.

Parameters:
  `os` - the output stream to use
  `blockSize` - the block size to use

### TarOutputStream

public TarOutputStream(OutputStream os, int blockSize, String encoding)
Constructor for TarInputStream.

Parameters:
  `os` - the output stream to use
  `blockSize` - the block size to use
  `encoding` - name of the encoding to use for file names

### TarOutputStream

public TarOutputStream(OutputStream os, int blockSize, int recordSize)
Constructor for TarInputStream.

Parameters:
  `os` - the output stream to use
  `blockSize` - the block size to use
  `recordSize` - the record size to use

### TarOutputStream

public TarOutputStream(OutputStream os, int blockSize, int recordSize, String encoding)
Constructor for TarInputStream.

Parameters:
  `os` - the output stream to use
  `blockSize` - the block size to use
  `recordSize` - the record size to use
  `encoding` - name of the encoding to use for file names

## Method Details

### setLongFileMode

public void setLongFileMode(int longFileMode)
Set the long file mode. This can be LONGFILE_ERROR(0), LONGFILE_TRUNCATE(1) or LONGFILE_GNU(2). This specifies the treatment of long file names (names >= TarConstants.NAMELEN). Default is LONGFILE_ERROR.

Parameters:
  `longFileMode` - the mode to use

### setBigNumberMode

public void setBigNumberMode(int bigNumberMode)
Set the big number mode. This can be BIGNUMBER_ERROR(0), BIGNUMBER_POSIX(1) or BIGNUMBER_STAR(2). This specifies the treatment of big files (sizes > TarConstants.MAXSIZE) and other numeric values to big to fit into a traditional tar header. Default is BIGNUMBER_ERROR.

Parameters:
  `bigNumberMode` - the mode to use

### setAddPaxHeadersForNonAsciiNames

public void setAddPaxHeadersForNonAsciiNames(boolean b)
Whether to add a PAX extension header for non-ASCII file names.

Parameters:
  `b` - boolean

### setDebug

public void setDebug(boolean debugF)
Sets the debugging flag.

Parameters:
  `debugF` - True to turn on debugging.

### setBufferDebug

public void setBufferDebug(boolean debug)
Sets the debugging flag in this stream's TarBuffer.

Parameters:
  `debug` - True to turn on debugging.

### finish

public void finish() throws IOException
Ends the TAR archive without closing the underlying OutputStream. An archive consists of a series of file entries terminated by an end-of-archive entry, which consists of two 512 blocks of zero bytes. POSIX.1 requires two EOF records, like some other implementations.

Throws:
  `IOException` - on error

### close

public void close() throws IOException
Ends the TAR archive and closes the underlying OutputStream. This means that finish() is called followed by calling the TarBuffer's close().

Specified by:
  `close` in interface `AutoCloseable`
Specified by:
  `close` in interface `Closeable`
Overrides:
  `close` in class `FilterOutputStream`
Throws:
  `IOException` - on error

### getRecordSize

public int getRecordSize()
Get the record size being used by this stream's TarBuffer.

Returns:
  The TarBuffer record size.

### putNextEntry

public void putNextEntry(TarEntry entry) throws IOException
Put an entry on the output stream. This writes the entry's header record and positions the output stream for writing the contents of the entry. Once this method is called, the stream is ready for calls to write() to write the entry's contents. Once the contents are written, closeEntry() MUST be called to ensure that all buffered data is completely written to the output stream.

Parameters:
  `entry` - The TarEntry to be written to the archive.
Throws:
  `IOException` - on error

### closeEntry

public void closeEntry() throws IOException
Close an entry. This method MUST be called for all file entries that contain data. The reason is that we must buffer data written to the stream in order to satisfy the buffer's record based writes. Thus, there may be data fragments still being assembled that must be written to the output stream before this entry is closed and the next entry written.

Throws:
  `IOException` - on error

### write

public void write(int b) throws IOException
Writes a byte to the current tar archive entry. This method simply calls read(byte[], int, int).

Overrides:
  `write` in class `FilterOutputStream`
Parameters:
  `b` - The byte written.
Throws:
  `IOException` - on error

### write

public void write(byte[] wBuf) throws IOException
Writes bytes to the current tar archive entry. This method simply calls write(byte[], int, int).

Overrides:
  `write` in class `FilterOutputStream`
Parameters:
  `wBuf` - The buffer to write to the archive.
Throws:
  `IOException` - on error

### write

public void write(byte[] wBuf, int wOffset, int numToWrite) throws IOException
Writes bytes to the current tar archive entry. This method is aware of the current entry and will throw an exception if you attempt to write bytes past the length specified for the current entry. The method is also (painfully) aware of the record buffering required by TarBuffer, and manages buffers that are not a multiple of recordsize in length, including assembling records from small buffers.

Overrides:
  `write` in class `FilterOutputStream`
Parameters:
  `wBuf` - The buffer to write to the archive.
  `wOffset` - The offset in the buffer from which to get bytes.
  `numToWrite` - The number of bytes to write.
Throws:
  `IOException` - on error