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java.lang.Objectjava.io.InputStream
java.io.FilterInputStream
java.util.zip.InflaterInputStream
java.util.zip.GZIPInputStream
public class GZIPInputStream
This filter stream is used to decompress a "GZIP" format stream. The "GZIP" format is described in RFC 1952.
Field Summary | |
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protected CRC32 |
crc
The CRC-32 checksum value for uncompressed data. |
protected boolean |
eos
Indicates whether or not the end of the stream has been reached. |
static int |
GZIP_MAGIC
The magic number found at the start of a GZIP stream. |
Fields inherited from class java.util.zip.InflaterInputStream |
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buf, inf, len |
Fields inherited from class java.io.FilterInputStream |
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in |
Constructor Summary | |
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GZIPInputStream(InputStream in)
Creates a GZIPInputStream with the default buffer size. |
|
GZIPInputStream(InputStream in,
int size)
Creates a GZIPInputStream with the specified buffer size. |
Method Summary | |
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void |
close()
Closes the input stream. |
int |
read(byte[] buf,
int offset,
int len)
Reads in GZIP-compressed data and stores it in uncompressed form into an array of bytes. |
Methods inherited from class java.util.zip.InflaterInputStream |
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available, fill, mark, markSupported, read, reset, skip |
Methods inherited from class java.io.FilterInputStream |
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read |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final int GZIP_MAGIC
protected CRC32 crc
protected boolean eos
Constructor Detail |
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public GZIPInputStream(InputStream in) throws IOException
in
- The stream to read compressed data from
(in GZIP format).
IOException
- if an error occurs during an I/O operation.public GZIPInputStream(InputStream in, int size) throws IOException
in
- The stream to read compressed data from
(in GZIP format).size
- The size of the buffer to use.
IOException
- if an error occurs during an I/O operation.
IllegalArgumentException
- if size
is less than or equal to 0.Method Detail |
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public void close() throws IOException
close
in interface Closeable
close
in class InflaterInputStream
IOException
- if an error occurs during an I/O operation.public int read(byte[] buf, int offset, int len) throws IOException
read
in class InflaterInputStream
buf
- the buffer into which the uncompressed data will
be stored.offset
- the offset indicating where in buf
the uncompressed data should be placed.len
- the number of uncompressed bytes to be read.
in.read(byte[], int, int)
IOException
- If an error occurs
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