B2CConverterpublic class B2CConverter extends Object | Efficient conversion of bytes to character .
This uses the standard JDK mechansim - a reader - but provides mechanisms
to recycle all the objects that are used. It is compatible with JDK1.1
and up,
( nio is better, but it's not available even in 1.2 or 1.3 )
Not used in the current code, the performance gain is not very big
in the current case ( since String is created anyway ), but it will
be used in a later version or after the remaining optimizations. |
| Fields Summary |
|---|
| private static org.apache.juli.logging.Log | log | | private IntermediateInputStream | iis | | private ReadConvertor | conv | | private String | encoding | | static final int | BUFFER_SIZE | | char[] | result | | private final int | debug |
| Constructors Summary |
|---|
protected B2CConverter()
| public B2CConverter(String encoding)Create a converter, with bytes going to a byte buffer
this.encoding=encoding;
reset();
|
| Methods Summary |
|---|
| public void | convert(ByteChunk bb, CharChunk cb)Convert a buffer of bytes into a chars
// Set the ByteChunk as input to the Intermediate reader
iis.setByteChunk( bb );
convert(cb);
| | private void | convert(CharChunk cb)
try {
// read from the reader
while( true ) { // conv.ready() ) {
int cnt=conv.read( result, 0, BUFFER_SIZE );
if( cnt <= 0 ) {
// End of stream ! - we may be in a bad state
if( debug>0)
log( "EOF" );
// reset();
return;
}
if( debug > 1 )
log("Converted: " + new String( result, 0, cnt ));
// XXX go directly
cb.append( result, 0, cnt );
}
} catch( IOException ex) {
if( debug>0)
log( "Reseting the converter " + ex.toString() );
reset();
throw ex;
}
| | void | log(java.lang.String s)
if (log.isDebugEnabled())
log.debug("B2CConverter: " + s );
| | public void | recycle()Reset the internal state, empty the buffers.
The encoding remain in effect, the internal buffers remain allocated.
conv.recycle();
| | public void | reset()
// destroy the reader/iis
iis=new IntermediateInputStream();
conv=new ReadConvertor( iis, encoding );
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