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