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org.mozilla.jss.util
Class Base64OutputStream

java.lang.Object
  extended by java.io.OutputStream
      extended by java.io.FilterOutputStream
          extended by org.mozilla.jss.util.Base64OutputStream
All Implemented Interfaces:
java.io.Closeable, java.io.Flushable

public class Base64OutputStream
extends java.io.FilterOutputStream

An output stream filter that takes arbitrary bytes and outputs their base64 encoding. Call flush() or close() to write out the final padding. The class also automatically puts line breaks in the output stream.


Field Summary
 
Fields inherited from class java.io.FilterOutputStream
out
 
Constructor Summary
Base64OutputStream(java.io.PrintStream out)
          Create a stream that does not insert line breaks.
Base64OutputStream(java.io.PrintStream out, int quadsPerLine)
           
 
Method Summary
 void close()
          This flushes the stream and closes the next stream downstream.
 void flush()
          Calling this will put the ending padding on the base64 stream, so don't call it until you have no data left.
 void write(byte[] buffer)
           
 void write(byte[] buffer, int offset, int count)
           
 void write(int oneByte)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Base64OutputStream

public Base64OutputStream(java.io.PrintStream out)
Create a stream that does not insert line breaks. To have line breaks, use the other constructor.


Base64OutputStream

public Base64OutputStream(java.io.PrintStream out,
                          int quadsPerLine)
Parameters:
quadsPerLine - Number of 4-character blocks to write before outputting a line break. For example, for 76-characters per line, pass in 76/4 = 19.
Method Detail

write

public void write(int oneByte)
           throws java.io.IOException
Overrides:
write in class java.io.FilterOutputStream
Throws:
java.io.IOException

close

public void close()
           throws java.io.IOException
This flushes the stream and closes the next stream downstream.

Specified by:
close in interface java.io.Closeable
Overrides:
close in class java.io.FilterOutputStream
Throws:
java.io.IOException

flush

public void flush()
           throws java.io.IOException
Calling this will put the ending padding on the base64 stream, so don't call it until you have no data left. The class does no unnecessary buffering, so you probably shouldn't call it at all.

Specified by:
flush in interface java.io.Flushable
Overrides:
flush in class java.io.FilterOutputStream
Throws:
java.io.IOException

write

public void write(byte[] buffer)
           throws java.io.IOException
Overrides:
write in class java.io.FilterOutputStream
Throws:
java.io.IOException

write

public void write(byte[] buffer,
                  int offset,
                  int count)
           throws java.io.IOException
Overrides:
write in class java.io.FilterOutputStream
Throws:
java.io.IOException