Class LimitedByteInput

All Implemented Interfaces:
Closeable, AutoCloseable, ByteInput

public class LimitedByteInput extends ByteInputStream
A limited byte input stream. Throws an exception if too many bytes are read.
  • Field Details

    • limit

      private final long limit
    • count

      private long count
  • Constructor Details

    • LimitedByteInput

      public LimitedByteInput(ByteInput byteInput, long limit)
      Create a new instance.
      Parameters:
      byteInput - the byte input to read from
      limit - the maximum number of bytes to read
  • Method Details

    • read

      public int read() throws IOException
      Reads the next byte of data from the input stream. If no byte is available because the end of the stream has been reached, the value -1 is returned. This method blocks until input data is available, the end of the stream is detected, or an exception is thrown.
      Specified by:
      read in interface ByteInput
      Overrides:
      read in class ByteInputStream
      Returns:
      the next byte, or -1 if the end of stream has been reached
      Throws:
      IOException - if an error occurs
    • read

      public int read(byte[] b, int off, int len) throws IOException
      Read some bytes from the input stream into the given array. Returns the number of bytes actually read (possibly zero), or -1 if the end of stream has been reached.
      Specified by:
      read in interface ByteInput
      Overrides:
      read in class ByteInputStream
      Parameters:
      b - the destination array
      off - the offset into the array into which data should be read
      len - the number of bytes to attempt to fill in the destination array
      Returns:
      the number of bytes read (possibly zero), or -1 if the end of stream has been reached
      Throws:
      IOException - if an error occurs
    • skip

      public long skip(long n) throws IOException
      Skips over and discards up to n bytes of data from this input stream. If the end of stream is reached, this method returns 0 in order to be consistent with InputStream.skip(long).
      Specified by:
      skip in interface ByteInput
      Overrides:
      skip in class ByteInputStream
      Parameters:
      n - the number of bytes to attempt to skip
      Returns:
      the number of bytes skipped
      Throws:
      IOException - if an error occurs