Field Summary

Constructor Summary

Method Summary

Field Details

• 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.

  See Also:

  • Constant Field Values

Constructor Details

• GZIPInputStream

  public GZIPInputStream(InputStream in, int size) throwsIOException

  Creates a new input stream with the specified buffer size.

  Parameters:

  in - the input stream

  size - the input buffer size

  Throws:

  ZipException - if a GZIP format error has occurred or the compression method used is unsupported

  NullPointerException - ifin is null

  IOException - if an I/O error has occurred

  IllegalArgumentException - ifsize <= 0

• GZIPInputStream

  public GZIPInputStream(InputStream in) throwsIOException

  Creates a new input stream with a default buffer size.

  Parameters:

  in - the input stream

  Throws:

  ZipException - if a GZIP format error has occurred or the compression method used is unsupported

  NullPointerException - ifin is null

  IOException - if an I/O error has occurred

Method Details

• read

  public int read(byte[] buf, int off, int len) throwsIOException

  Reads uncompressed data into an array of bytes, returning the number of inflated bytes. Iflen is not zero, the method will block until some input can be decompressed; otherwise, no bytes are read and0 is returned.

  If this method returns a nonzero integern thenbuf[off] throughbuf[off+n-1] contain the uncompressed data. The content of elementsbuf[off+n] throughbuf[off+len-1] is undefined, contrary to the specification of theInputStream superclass, so an implementation is free to modify these elements during the inflate operation. If this method returns-1 or throws an exception then the content ofbuf[off] throughbuf[off+len -1] is undefined.

  Overrides:

  read in class InflaterInputStream

  Parameters:

  buf - the buffer into which the data is read

  off - the start offset in the destination arraybuf

  len - the maximum number of bytes read

  Returns:

  the actual number of bytes inflated, or -1 if the end of the compressed input stream is reached

  Throws:

  NullPointerException - Ifbuf isnull.

  IndexOutOfBoundsException - Ifoff is negative,len is negative, orlen is greater thanbuf.length - off

  ZipException - if the compressed input data is corrupt.

  IOException - if an I/O error has occurred.

  See Also:

  • FilterInputStream.in

• close

  public void close() throwsIOException

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

  Specified by:

  close in interface AutoCloseable

  Specified by:

  close in interface Closeable

  Overrides:

  close in class InflaterInputStream

  Throws:

  IOException - if an I/O error has occurred

  See Also:

  • FilterInputStream.in