Class InflaterInputStream

Field Detail

• inf

  protected Inflater inf

  Decompressor for this stream.

• buf

  protected byte[] buf

  Input buffer for decompression.

• len

  protected int len

  Length of input buffer.

Constructor Detail

• InflaterInputStream

  public InflaterInputStream(InputStream in,
                     Inflater inf,
                     int size)

  Creates a new input stream with the specified decompressor and buffer size.

  Parameters:

  in - the input stream

  inf - the decompressor ("inflater")

  size - the input buffer size

  Throws:

  IllegalArgumentException - if size is <= 0

• InflaterInputStream

  public InflaterInputStream(InputStream in,
                     Inflater inf)

  Creates a new input stream with the specified decompressor and a default buffer size.

  Parameters:

  in - the input stream

  inf - the decompressor ("inflater")

• InflaterInputStream

  public InflaterInputStream(InputStream in)

  Creates a new input stream with a default decompressor and buffer size.

  Parameters:

  in - the input stream

Method Detail

• read

  public int read()
           throws IOException

  Reads a byte of uncompressed data. This method will block until enough input is available for decompression.

  Overrides:

  read in class FilterInputStream

  Returns:

  the byte read, or -1 if end of compressed input is reached

  Throws:

  IOException - if an I/O error has occurred

  See Also:

  FilterInputStream.in

• read

  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.

  Overrides:

  read in class FilterInputStream

  Parameters:

  b - the buffer into which the data is read

  off - the start offset in the destination array b

  len - the maximum number of bytes read

  Returns:

  the actual number of bytes read, or -1 if the end of the compressed input is reached or a preset dictionary is needed

  Throws:

  NullPointerException - 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 occurred

  IOException - if an I/O error has occurred

  See Also:

  FilterInputStream.in

• available

  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.

  Overrides:

  available in class FilterInputStream

  Returns:

  1 before EOF and 0 after EOF.

  Throws:

  IOException - if an I/O error occurs.

• skip

  public long skip(long n)
            throws IOException

  Skips specified number of bytes of uncompressed data.

  Overrides:

  skip in class FilterInputStream

  Parameters:

  n - the number of bytes to skip

  Returns:

  the actual number of bytes skipped.

  Throws:

  IOException - if an I/O error has occurred

  IllegalArgumentException - if n < 0

• close

  public void close()
             throws IOException

  Closes this input stream and releases any system resources associated with the stream.

  Specified by:

  close in interface Closeable

  Specified by:

  close in interface AutoCloseable

  Overrides:

  close in class FilterInputStream

  Throws:

  IOException - if an I/O error has occurred

  See Also:

  FilterInputStream.in

• fill

  protected void fill()
               throws IOException

  Fills input buffer with more data to decompress.

  Throws:

  IOException - if an I/O error has occurred

• markSupported

  public boolean markSupported()

  Tests if this input stream supports the mark and reset methods. The markSupported method of InflaterInputStream returns false.

  Overrides:

  markSupported in class FilterInputStream

  Returns:

  a boolean indicating if this stream type supports the mark and reset methods.

  See Also:

  InputStream.mark(int), InputStream.reset()

• mark

  public void mark(int readlimit)

  Marks the current position in this input stream.

  The mark method of InflaterInputStream does nothing.

  Overrides:

  mark in class FilterInputStream

  Parameters:

  readlimit - the maximum limit of bytes that can be read before the mark position becomes invalid.

  See Also:

  InputStream.reset()

• 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.

  Overrides:

  reset in class FilterInputStream

  Throws:

  IOException - if this method is invoked.

  See Also:

  InputStream.mark(int), IOException