Package com.adobe.internal.io

Class NonCachedRandomAccessFileByteReader

  • All Implemented Interfaces:
    ByteReader
    public class NonCachedRandomAccessFileByteReader
extends java.lang.Object
    A ByteReader that wraps a RandomAccessFile. No buffering is provided so all file access is direct - this is slower than buffering.

    • Field Summary

      • Fields inherited from interface com.adobe.internal.io.ByteReader

        EOF

    • Constructor Summary

      Constructors 
      Constructor Description
      NonCachedRandomAccessFileByteReader​(java.io.RandomAccessFile file)
      This class implements a ByteReader in which the bytes are read from a RandomAccessFile.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void close()
      Closes this ByteReader and releases any system resources associated with this stream.
      long length()
      Returns the number of total bytes in the repository that are visible through this API.
      int read​(long position)
      Read a single byte from the underlying bytes at the given position.
      int read​(long position, byte[] b, int offset, int length)
      Transfers bytes from the underlying repository into the given destination array.

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • NonCachedRandomAccessFileByteReader

        public NonCachedRandomAccessFileByteReader​(java.io.RandomAccessFile file)
                                    throws java.io.IOException
        This class implements a ByteReader in which the bytes are read from a RandomAccessFile.
        Parameters:
        file - the file to wrap with the ByteReader
        Throws:
        java.io.IOException

    • Method Detail

      • read

        public int read​(long position)
         throws java.io.IOException
        Description copied from interface: ByteReader
        Read a single byte from the underlying bytes at the given position.
        Specified by:
        read in interface ByteReader
        Parameters:
        position - the position to read the byte from.
        Returns:
        the byte at the postion or EOF if the position is outside of the legal range.
        Throws:
        java.io.IOException - if an error occurs during the read operation
        See Also:
        ByteReader.read(long)

      • read

        public int read​(long position,
                byte[] b,
                int offset,
                int length)
         throws java.io.IOException
        Description copied from interface: ByteReader
        Transfers bytes from the underlying repository into the given destination array. Copy up to length bytes from the repository starting at the postion given into the given array starting at the given offset.
        Specified by:
        read in interface ByteReader
        Parameters:
        position - the position to read the byte from.
        b - the array to write the bytes into.
        offset - the offset in the array at which the first byte is written.
        length - the maximum number of bytes to write into the array.
        Returns:
        the number of bytes actually written to the array.
        Throws:
        java.io.IOException - if an error occurs during the read operation
        See Also:
        ByteReader.read(long, byte[], int, int)

      • length

        public long length()
            throws java.io.IOException
        Description copied from interface: ByteReader
        Returns the number of total bytes in the repository that are visible through this API.
        Specified by:
        length in interface ByteReader
        Returns:
        the number of bytes in the repository.
        Throws:
        java.io.IOException - if an error occurs while trying to determine the length
        See Also:
        ByteReader.length()

      • close

        public void close()
           throws java.io.IOException
        Description copied from interface: ByteReader
        Closes this ByteReader and releases any system resources associated with this stream.
        Specified by:
        close in interface ByteReader
        Throws:
        java.io.IOException - if an error occurs while trying to close
        See Also:
        ByteReader.close()