function setEncoding(encoding) {
validateEncoding(encoding);
// Recode the buffer to the new encoding
opts.encoding = encoding;
var newBuffer = new CircularBuffer(opts);
if (buffer.length > 0) newBuffer.write(buffer.read());
buffer = newBuffer;
return DuplexStream.setEncoding.call(self, encoding);
}
function flush() {
self.push(buffer.read('buffer'), opts.encoding);
}
function _read(n) {
self.push(buffer.read(n, 'buffer'), opts.encoding);
}