Class java.util.zip.GZIPInputStream





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Class java.util.zip.GZIPInputStream


java.lang.Object
|
+----java.io.InputStream
|
+----java.io.FilterInputStream
|
+----java.util.zip.InflaterInputStream
|
+----java.util.zip.GZIPInputStream



public class GZIPInputStream
extends InflaterInputStream

This class implements a stream filter for reading compressed data in
the GZIP format.


See Also:
InflaterInputStream








crc
CRC-32 for uncompressed data.

eos
Indicates end of input stream.

GZIP_MAGIC
GZIP header magic number.






GZIPInputStream(InputStream)
Creates a new input stream with a default buffer size.

GZIPInputStream(InputStream, int)
Creates a new input stream with the specified buffer size.






close()
Closes the input stream.

read(byte[], int, int)
Reads uncompressed data into an array of bytes.






crc

protected CRC32 crc


CRC-32 for uncompressed data.


eos

protected boolean eos


Indicates end of input stream.


GZIP_MAGIC

public static final int GZIP_MAGIC


GZIP header magic number.







GZIPInputStream

public GZIPInputStream(InputStream in,
int size) throws IOException


Creates a new input stream with the specified buffer size.


Parameters:
in - the input stream
size - the input buffer size
Throws: IOException
if an I/O error has occurred



GZIPInputStream

public GZIPInputStream(InputStream in) throws IOException


Creates a new input stream with a default buffer size.


Parameters:
in - the input stream
Throws: IOException
if an I/O error has occurred







read

public int read(byte buf[],
int off,
int len) throws IOException


Reads uncompressed data into an array of bytes. Blocks until enough
input is available for decompression.


Parameters:
buf - the buffer into which the data is read
off - the start offset of the data
len - the maximum number of bytes read
Returns:
the actual number of bytes read, or -1 if the end of the
compressed input stream is reached
Throws: IOException
if an I/O error has occurred or the compressed
input data is corrupt
Overrides:
read in class InflaterInputStream



close

public void close() throws IOException


Closes the input stream.


Throws: IOException
if an I/O error has occurred
Overrides:
close in class FilterInputStream




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