Class GZIPInputStream

java.lang.Object
java.io.InputStream
java.io.FilterInputStream
java.util.zip.InflaterInputStream
java.util.zip.GZIPInputStream
All Implemented Interfaces:
AutoCloseable
public class GZIPInputStream extends InflaterInputStream

  • Field Details

    • GZIP_MAGIC

      public static final int GZIP_MAGIC
      See Also:

    • crc

      protected CRC32 crc

    • eos

      protected boolean eos

  • Constructor Details

  • Method Details

    • fill

      protected void fill() throws IOException
      Overrides:
      fill in class InflaterInputStream
      Throws:
      IOException

    • read

      public int read(byte[] arg0, int arg1, int arg2) throws IOException
      Description copied from class: InputStream
      Reads up to len bytes of data from the input stream into an array of bytes. An attempt is made to read as many as len bytes, but a smaller number may be read, possibly zero. The number of bytes actually read is returned as an integer. This method blocks until input data is available, end of file is detected, or an exception is thrown. If b is null, a NullPointerException is thrown. If off is negative, or len is negative, or off+len is greater than the length of the array b, then an IndexOutOfBoundsException is thrown. If len is zero, then no bytes are read and 0 is returned; otherwise, there is an attempt to read at least one byte. If no byte is available because the stream is at end of file, the value -1 is returned; otherwise, at least one byte is read and stored into b. The first byte read is stored into element b[off], the next one into b[off+1], and so on. The number of bytes read is, at most, equal to len. Let k be the number of bytes actually read; these bytes will be stored in elements b[off] through b[off+k-1], leaving elements b[off+k] through b[off+len-1] unaffected. In every case, elements b[0] through b[off] and elements b[off+len] through b[b.length-1] are unaffected. If the first byte cannot be read for any reason other than end of file, then an IOException is thrown. In particular, an IOException is thrown if the input stream has been closed. The read(b, off, len) method for class InputStream simply calls the method read() repeatedly. If the first such call results in an IOException, that exception is returned from the call to the read(b, off, len) method. If any subsequent call to read() results in a IOException, the exception is caught and treated as if it were end of file; the bytes read up to that point are stored into b and the number of bytes read before the exception occurred is returned. Subclasses are encouraged to provide a more efficient implementation of this method.
      Overrides:
      read in class InflaterInputStream
      Throws:
      IOException

    • available

      public int available() throws IOException
      Description copied from class: InputStream
      Returns the number of bytes that can be read (or skipped over) from this input stream without blocking by the next caller of a method for this input stream. The next caller might be the same thread or another thread. The available method for class InputStream always returns 0. This method should be overridden by subclasses.
      Overrides:
      available in class InflaterInputStream
      Throws:
      IOException

    • close

      public void close() throws IOException
      Description copied from class: InputStream
      Closes this input stream and releases any system resources associated with the stream. The close method of InputStream does nothing.
      Specified by:
      close in interface AutoCloseable
      Overrides:
      close in class InflaterInputStream
      Throws:
      IOException