Writable.prototype.write = function(chunk, encoding, cb) {
var state = this._writableState;
var ret = false;
var isBuf = !state.objectMode && Stream._isUint8Array(chunk);
if (isBuf && Object.getPrototypeOf(chunk) !== Buffer.prototype) {
chunk = Stream._uint8ArrayToBuffer(chunk);
}
if (typeof encoding === 'function') {
cb = encoding;
encoding = null;
}
if (isBuf)
encoding = 'buffer';
else if (!encoding)
encoding = state.defaultEncoding;
if (typeof cb !== 'function')
cb = nop;
if (state.ended)
writeAfterEnd(this, cb);
else if (isBuf || validChunk(this, state, chunk, cb)) {
state.pendingcb++;
ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb);
}
return ret;
};
function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {
debug('readableAddChunk', chunk);
var state = stream._readableState;
if (chunk === null) {
state.reading = false;
onEofChunk(stream, state);
} else {
var er;
if (!skipChunkCheck)
er = chunkInvalid(state, chunk);
if (er) {
stream.emit('error', er);
} else if (state.objectMode || chunk && chunk.length > 0) {
if (typeof chunk !== 'string' &&
!state.objectMode &&
Object.getPrototypeOf(chunk) !== Buffer.prototype) {
chunk = Stream._uint8ArrayToBuffer(chunk);
}
if (addToFront) {
if (state.endEmitted)
stream.emit('error', new ERR_STREAM_UNSHIFT_AFTER_END_EVENT());
else
addChunk(stream, state, chunk, true);
} else if (state.ended) {
stream.emit('error', new ERR_STREAM_PUSH_AFTER_EOF());
} else if (state.destroyed) {
return false;
} else {
state.reading = false;
if (state.decoder && !encoding) {
chunk = state.decoder.write(chunk);
if (state.objectMode || chunk.length !== 0)
addChunk(stream, state, chunk, false);
else
maybeReadMore(stream, state);
} else {
addChunk(stream, state, chunk, false);
}
}
} else if (!addToFront) {
state.reading = false;
maybeReadMore(stream, state);
}
}
// We can push more data if we are below the highWaterMark.
// Also, if we have no data yet, we can stand some more bytes.
// This is to work around cases where hwm=0, such as the repl.
return !state.ended &&
(state.length < state.highWaterMark || state.length === 0);
}
function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {
debug('readableAddChunk', chunk);
var state = stream._readableState;
if (chunk === null) {
state.reading = false;
onEofChunk(stream, state);
} else {
var er;
if (!skipChunkCheck)
er = chunkInvalid(state, chunk);
if (er) {
stream.emit('error', er);
} else if (state.objectMode || chunk && chunk.length > 0) {
if (typeof chunk !== 'string' &&
!state.objectMode &&
Object.getPrototypeOf(chunk) !== Buffer.prototype) {
chunk = Stream._uint8ArrayToBuffer(chunk);
}
if (addToFront) {
if (state.endEmitted)
stream.emit('error', new ERR_STREAM_UNSHIFT_AFTER_END_EVENT());
else
addChunk(stream, state, chunk, true);
} else if (state.ended) {
stream.emit('error', new ERR_STREAM_PUSH_AFTER_EOF());
} else if (state.destroyed) {
return false;
} else {
state.reading = false;
if (state.decoder && !encoding) {
chunk = state.decoder.write(chunk);
if (state.objectMode || chunk.length !== 0)
addChunk(stream, state, chunk, false);
else
maybeReadMore(stream, state);
} else {
addChunk(stream, state, chunk, false);
}
}
} else if (!addToFront) {
state.reading = false;
maybeReadMore(stream, state);
}
}
return needMoreData(state);
}
function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {
var state = stream._readableState;
if (chunk === null) {
state.reading = false;
onEofChunk(stream, state);
} else {
var er;
if (!skipChunkCheck)
er = chunkInvalid(state, chunk);
if (er) {
stream.emit('error', er);
} else if (state.objectMode || chunk && chunk.length > 0) {
if (typeof chunk !== 'string' &&
!state.objectMode &&
Object.getPrototypeOf(chunk) !== Buffer.prototype) {
chunk = Stream._uint8ArrayToBuffer(chunk);
}
if (addToFront) {
if (state.endEmitted)
stream.emit('error', new Error('stream.unshift() after end event'));
else
addChunk(stream, state, chunk, true);
} else if (state.ended) {
stream.emit('error', new Error('stream.push() after EOF'));
} else {
state.reading = false;
if (state.decoder && !encoding) {
chunk = state.decoder.write(chunk);
if (state.objectMode || chunk.length !== 0)
addChunk(stream, state, chunk, false);
else
maybeReadMore(stream, state);
} else {
addChunk(stream, state, chunk, false);
}
}
} else if (!addToFront) {
state.reading = false;
}
}
return needMoreData(state);
}