Package com.adobe.internal.io

Class CountingInputStream

  • All Implemented Interfaces:
    java.io.Closeable, java.lang.AutoCloseable
    Direct Known Subclasses:
    RangedInputStream
    public class CountingInputStream
extends java.io.FilterInputStream
    A FilterInputStream wrapper that counts the number of bytes read from the stream or skipped over since the creation of this wrapper.

    • Constructor Summary

      Constructors 
      Constructor Description
      CountingInputStream​(java.io.InputStream is)  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      long getOffset()
      Get the offset in the wrapped stream since the creation of this wrapper.
      int read()
      Reads the next byte of data from this input stream.
      int read​(byte[] b)
      Reads up to byte.length bytes of data from this input stream into an array of bytes.
      int read​(byte[] b, int off, int len)
      Reads up to len bytes of data from this input stream into an array of bytes.
      long skip​(long n)
      Skips over and discards n bytes of data from the input stream.

      • Methods inherited from class java.io.FilterInputStream

        available, close, mark, markSupported, reset

      • Methods inherited from class java.io.InputStream

        nullInputStream, readAllBytes, readNBytes, readNBytes, transferTo

      • Methods inherited from class java.lang.Object

        equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • CountingInputStream

        public CountingInputStream​(java.io.InputStream is)
        Parameters:
        is -

    • Method Detail

      • read

        public int read()
         throws java.io.IOException
        Reads the next byte of data from this input stream. The value byte is returned as an int in the range 0 to 255. 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.
        Overrides:
        read in class java.io.FilterInputStream
        Returns:
        the next byte of data or -1 if the end of stream is reached
        Throws:
        java.io.IOException - if an I/O error occurs

      • read

        public int read​(byte[] b,
                int off,
                int len)
         throws java.io.IOException
        Reads up to len bytes of data from this input stream into an array of bytes. This method blocks until some input is available.
        Overrides:
        read in class java.io.FilterInputStream
        Parameters:
        b - the buffer into which the data is read
        off - the start offset in the buffer to write the data
        len - the maximum number of bytes to read
        Returns:
        the total number of bytes read into the buffer, or -1 if there is no more data because the end of the stream has been reached.
        Throws:
        java.io.IOException - if an I/O error occurs

      • read

        public int read​(byte[] b)
         throws java.io.IOException
        Reads up to byte.length bytes of data from this input stream into an array of bytes. This method blocks until some input is available.
        Overrides:
        read in class java.io.FilterInputStream
        Returns:
        the total number of bytes read into the buffer, or -1 if there is no more data because the end of the stream has been reached.
        Throws:
        java.io.IOException - if an I/O error occurs

      • skip

        public long skip​(long n)
          throws java.io.IOException
        Skips over and discards n bytes of data from the input stream. The skip method may, for a variety of reasons, end up skipping over some smaller number of bytes, possibly 0. The actual number of bytes skipped is returned.
        Overrides:
        skip in class java.io.FilterInputStream
        Parameters:
        n - the number of bytes to be skipped
        Returns:
        the actual number of bytes skipped
        Throws:
        java.io.IOException - if an I/O error occurs

      • getOffset

        public long getOffset()
        Get the offset in the wrapped stream since the creation of this wrapper.
        Returns:
        the offset in bytes