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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 | |
|---|---|
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 |
|---|
buf, inf, len |
| Fields inherited from class java.io.FilterInputStream |
|---|
in |
| Constructor Summary | |
|---|---|
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 | |
|---|---|
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 |
|---|
available, fill, mark, markSupported, read, reset, skip |
| Methods inherited from class java.io.FilterInputStream |
|---|
read |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
|---|
public static final int GZIP_MAGIC
protected CRC32 crc
protected boolean eos
| Constructor Detail |
|---|
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 |
|---|
public void close()
throws IOException
close in interface Closeableclose in class InflaterInputStreamIOException - if an error occurs during an I/O operation.
public int read(byte[] buf,
int offset,
int len)
throws IOException
read in class InflaterInputStreambuf - 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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