TransportHelperFilterSwitcherpublic class TransportHelperFilterSwitcher extends Object implements TransportHelperFilter
| Fields Summary |
|---|
| private TransportHelperFilter | current_reader | | private TransportHelperFilter | current_writer | | private TransportHelperFilter | first_filter | | private TransportHelperFilter | second_filter | | private int | read_rem | | private int | write_rem | | private ByteBuffer | read_insert |
| Constructors Summary |
|---|
public TransportHelperFilterSwitcher(TransportHelperFilter _filter1, TransportHelperFilter _filter2, int _switch_read, int _switch_write)
first_filter = _filter1;
second_filter = _filter2;
read_rem = _switch_read;
write_rem = _switch_write;
current_reader = read_rem<=0?second_filter:first_filter;
current_writer = write_rem<=0?second_filter:first_filter;
| public TransportHelperFilterSwitcher(TransportHelperFilter _filter1, TransportHelperFilter _filter2, ByteBuffer _read_insert)
first_filter = _filter1;
second_filter = _filter2;
read_insert = _read_insert;
current_reader = read_rem<=0?second_filter:first_filter;
current_writer = write_rem<=0?second_filter:first_filter;
|
| Methods Summary |
|---|
| public TransportHelper | getHelper()
return( second_filter.getHelper());
| | public java.lang.String | getName()
return( second_filter.getName());
| | public boolean | hasBufferedRead()
return( read_insert != null || current_reader.hasBufferedRead());
| | public boolean | hasBufferedWrite()
return( current_writer.hasBufferedWrite());
| | public boolean | isEncrypted()
return( current_reader.isEncrypted() || current_writer.isEncrypted());
| | public long | read(java.nio.ByteBuffer[] buffers, int array_offset, int length)
long total_read = 0;
if ( read_insert != null ){
int pos_before = read_insert.position();
for (int i=array_offset;i<array_offset+length;i++){
ByteBuffer buffer = buffers[i];
int space = buffer.remaining();
if ( space > 0 ){
if ( space < read_insert.remaining()){
int old_limit = read_insert.limit();
read_insert.limit( read_insert.position() + space );
buffer.put( read_insert );
read_insert.limit( old_limit );
}else{
buffer.put( read_insert );
}
if ( !read_insert.hasRemaining()){
break;
}
}
}
total_read = read_insert.position() - pos_before;
if ( read_insert.hasRemaining()){
return( total_read );
}else{
read_insert = null;
}
}
if ( current_reader != second_filter ){
int[] limits = new int[buffers.length];
int to_read = read_rem;
for (int i=array_offset;i<array_offset+length;i++){
ByteBuffer buffer = buffers[i];
limits[i] = buffer.limit();
int rem = buffer.remaining();
if ( rem > to_read ){
buffer.limit( buffer.position() + to_read );
to_read = 0;
}else{
to_read -= rem;
}
}
long read;
try{
read = current_reader.read( buffers, array_offset, length );
if ( read <= 0 ){
return( total_read );
}
total_read += read;
}finally{
for (int i=array_offset;i<array_offset+length;i++){
ByteBuffer buffer = buffers[i];
buffer.limit( limits[i] );
}
}
read_rem -= read;
if ( read_rem == 0 ){
current_reader = second_filter;
}else{
return( total_read );
}
}
total_read += current_reader.read( buffers, array_offset, length );
return( total_read );
| | public void | setTrace(boolean on)
first_filter.setTrace( on );
second_filter.setTrace( on );
| | public long | write(java.nio.ByteBuffer[] buffers, int array_offset, int length)
long total_written = 0;
if ( current_writer != second_filter ){
int[] limits = new int[buffers.length];
int to_write = write_rem;
for (int i=array_offset;i<array_offset+length;i++){
ByteBuffer buffer = buffers[i];
limits[i] = buffer.limit();
int rem = buffer.remaining();
if ( rem > to_write ){
buffer.limit( buffer.position() + to_write );
to_write = 0;
}else{
to_write -= rem;
}
}
try{
total_written = current_writer.write( buffers, array_offset, length );
if ( total_written <= 0 ){
return( total_written );
}
}finally{
for (int i=array_offset;i<array_offset+length;i++){
ByteBuffer buffer = buffers[i];
buffer.limit( limits[i] );
}
}
write_rem -= total_written;
if ( write_rem == 0 ){
// writer may have data buffered up pending next write call - if so then
// we need to get out now
if ( current_writer.hasBufferedWrite()){
return( total_written );
}
current_writer = second_filter;
}else{
return( total_written );
}
}
total_written += current_writer.write( buffers, array_offset, length );
return( total_written );
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