public class InflaterInputStream extends FilterInputStream
This class implements a stream filter for uncompressing data in the "deflate" compression format. It is also used as the basis for other decompression filters, such as GZIPInputStream.
Inflater
protected Inflater inf
Decompressor for this stream.
protected byte[] buf
Input buffer for decompression.
protected int len
Length of input buffer.
public InflaterInputStream(InputStream in, Inflater inf, int size)
Creates a new input stream with the specified decompressor and buffer size.
in
- the input streaminf
- the decompressor ("inflater")size
- the input buffer sizeIllegalArgumentException
- if size <= 0
public InflaterInputStream(InputStream in, Inflater inf)
Creates a new input stream with the specified decompressor and a default buffer size.
in
- the input streaminf
- the decompressor ("inflater")public InflaterInputStream(InputStream in)
Creates a new input stream with a default decompressor and buffer size.
in
- the input streampublic int read() throws IOException
Reads a byte of uncompressed data. This method will block until enough input is available for decompression.
read
in class FilterInputStream
IOException
- if an I/O error has occurredFilterInputStream.in
public int read(byte[] b, int off, int len) throws IOException
Reads uncompressed data into an array of bytes. If len
is not zero, the method will block until some input can be decompressed; otherwise, no bytes are read and 0
is returned.
read
in class FilterInputStream
b
- the buffer into which the data is readoff
- the start offset in the destination array b
len
- the maximum number of bytes readNullPointerException
- If b
is null
.IndexOutOfBoundsException
- If off
is negative, len
is negative, or len
is greater than b.length - off
ZipException
- if a ZIP format error has occurredIOException
- if an I/O error has occurredFilterInputStream.in
public int available() throws IOException
Returns 0 after EOF has been reached, otherwise always return 1.
Programs should not count on this method to return the actual number of bytes that could be read without blocking.
available
in class FilterInputStream
IOException
- if an I/O error occurs.public long skip(long n) throws IOException
Skips specified number of bytes of uncompressed data.
skip
in class FilterInputStream
n
- the number of bytes to skipIOException
- if an I/O error has occurredIllegalArgumentException
- if n < 0
public void close() throws IOException
Closes this input stream and releases any system resources associated with the stream.
close
in interface Closeable
close
in interface AutoCloseable
close
in class FilterInputStream
IOException
- if an I/O error has occurredFilterInputStream.in
protected void fill() throws IOException
Fills input buffer with more data to decompress.
IOException
- if an I/O error has occurredpublic boolean markSupported()
Tests if this input stream supports the mark
and reset
methods. The markSupported
method of InflaterInputStream
returns false
.
markSupported
in class FilterInputStream
boolean
indicating if this stream type supports the mark
and reset
methods.InputStream.mark(int)
, InputStream.reset()
public void mark(int readlimit)
Marks the current position in this input stream.
The mark
method of InflaterInputStream
does nothing.
mark
in class FilterInputStream
readlimit
- the maximum limit of bytes that can be read before the mark position becomes invalid.InputStream.reset()
public void reset() throws IOException
Repositions this stream to the position at the time the mark
method was last called on this input stream.
The method reset
for class InflaterInputStream
does nothing except throw an IOException
.
reset
in class FilterInputStream
IOException
- if this method is invoked.InputStream.mark(int)
, IOException
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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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