Package org.eclipse.net4j.util.io

Class DigestWriter

java.lang.Object
java.io.Writer
java.io.FilterWriter
org.eclipse.net4j.util.io.DigestWriter
All Implemented Interfaces:
Closeable, Flushable, Appendable, AutoCloseable
public class DigestWriter extends FilterWriter
Since:
3.1
Author:
Eike Stepper

  • Field Details

    • digest

      protected MessageDigest digest
      The message digest associated with this stream.

  • Constructor Details

    • DigestWriter

      public DigestWriter(Writer writer, MessageDigest digest)
      Creates a digest writer, using the specified writer and message digest.
      Parameters:
      writer - the writer.
      digest - the message digest to associate with this writer.

  • Method Details

    • getMessageDigest

      public MessageDigest getMessageDigest()
      Returns the message digest associated with this writer.
      Returns:
      the message digest associated with this writer.
      See Also:

    • setMessageDigest

      public void setMessageDigest(MessageDigest digest)
      Associates the specified message digest with this writer.
      Parameters:
      digest - the message digest to be associated with this writer.
      See Also:

    • write

      public void write(int c) throws IOException
      Overrides:
      write in class FilterWriter
      Throws:
      IOException

    • write

      public void write(char[] cbuf, int off, int len) throws IOException
      Overrides:
      write in class FilterWriter
      Throws:
      IOException

    • write

      public void write(String str, int off, int len) throws IOException
      Overrides:
      write in class FilterWriter
      Throws:
      IOException

    • on

      public void on(boolean on)
      Turns the digest function on or off. The default is on. When it is on, a call to one of the write methods results in an update on the message digest. But when it is off, the message digest is not updated.
      Parameters:
      on - true to turn the digest function on, false to turn it off.

    • toString

      public String toString()
      Prints a string representation of this digest output stream and its associated message digest object.
      Overrides:
      toString in class Object