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Diffstat (limited to 'node_modules/bl/node_modules/readable-stream/lib/_stream_writable.js')
-rw-r--r--node_modules/bl/node_modules/readable-stream/lib/_stream_writable.js516
1 files changed, 0 insertions, 516 deletions
diff --git a/node_modules/bl/node_modules/readable-stream/lib/_stream_writable.js b/node_modules/bl/node_modules/readable-stream/lib/_stream_writable.js
deleted file mode 100644
index 95916c992..000000000
--- a/node_modules/bl/node_modules/readable-stream/lib/_stream_writable.js
+++ /dev/null
@@ -1,516 +0,0 @@
-// A bit simpler than readable streams.
-// Implement an async ._write(chunk, encoding, cb), and it'll handle all
-// the drain event emission and buffering.
-
-'use strict';
-
-module.exports = Writable;
-
-/*<replacement>*/
-var processNextTick = require('process-nextick-args');
-/*</replacement>*/
-
-/*<replacement>*/
-var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : processNextTick;
-/*</replacement>*/
-
-/*<replacement>*/
-var Buffer = require('buffer').Buffer;
-/*</replacement>*/
-
-Writable.WritableState = WritableState;
-
-/*<replacement>*/
-var util = require('core-util-is');
-util.inherits = require('inherits');
-/*</replacement>*/
-
-/*<replacement>*/
-var internalUtil = {
- deprecate: require('util-deprecate')
-};
-/*</replacement>*/
-
-/*<replacement>*/
-var Stream;
-(function () {
- try {
- Stream = require('st' + 'ream');
- } catch (_) {} finally {
- if (!Stream) Stream = require('events').EventEmitter;
- }
-})();
-/*</replacement>*/
-
-var Buffer = require('buffer').Buffer;
-
-util.inherits(Writable, Stream);
-
-function nop() {}
-
-function WriteReq(chunk, encoding, cb) {
- this.chunk = chunk;
- this.encoding = encoding;
- this.callback = cb;
- this.next = null;
-}
-
-var Duplex;
-function WritableState(options, stream) {
- Duplex = Duplex || require('./_stream_duplex');
-
- options = options || {};
-
- // object stream flag to indicate whether or not this stream
- // contains buffers or objects.
- this.objectMode = !!options.objectMode;
-
- if (stream instanceof Duplex) this.objectMode = this.objectMode || !!options.writableObjectMode;
-
- // the point at which write() starts returning false
- // Note: 0 is a valid value, means that we always return false if
- // the entire buffer is not flushed immediately on write()
- var hwm = options.highWaterMark;
- var defaultHwm = this.objectMode ? 16 : 16 * 1024;
- this.highWaterMark = hwm || hwm === 0 ? hwm : defaultHwm;
-
- // cast to ints.
- this.highWaterMark = ~ ~this.highWaterMark;
-
- this.needDrain = false;
- // at the start of calling end()
- this.ending = false;
- // when end() has been called, and returned
- this.ended = false;
- // when 'finish' is emitted
- this.finished = false;
-
- // should we decode strings into buffers before passing to _write?
- // this is here so that some node-core streams can optimize string
- // handling at a lower level.
- var noDecode = options.decodeStrings === false;
- this.decodeStrings = !noDecode;
-
- // Crypto is kind of old and crusty. Historically, its default string
- // encoding is 'binary' so we have to make this configurable.
- // Everything else in the universe uses 'utf8', though.
- this.defaultEncoding = options.defaultEncoding || 'utf8';
-
- // not an actual buffer we keep track of, but a measurement
- // of how much we're waiting to get pushed to some underlying
- // socket or file.
- this.length = 0;
-
- // a flag to see when we're in the middle of a write.
- this.writing = false;
-
- // when true all writes will be buffered until .uncork() call
- this.corked = 0;
-
- // a flag to be able to tell if the onwrite cb is called immediately,
- // or on a later tick. We set this to true at first, because any
- // actions that shouldn't happen until "later" should generally also
- // not happen before the first write call.
- this.sync = true;
-
- // a flag to know if we're processing previously buffered items, which
- // may call the _write() callback in the same tick, so that we don't
- // end up in an overlapped onwrite situation.
- this.bufferProcessing = false;
-
- // the callback that's passed to _write(chunk,cb)
- this.onwrite = function (er) {
- onwrite(stream, er);
- };
-
- // the callback that the user supplies to write(chunk,encoding,cb)
- this.writecb = null;
-
- // the amount that is being written when _write is called.
- this.writelen = 0;
-
- this.bufferedRequest = null;
- this.lastBufferedRequest = null;
-
- // number of pending user-supplied write callbacks
- // this must be 0 before 'finish' can be emitted
- this.pendingcb = 0;
-
- // emit prefinish if the only thing we're waiting for is _write cbs
- // This is relevant for synchronous Transform streams
- this.prefinished = false;
-
- // True if the error was already emitted and should not be thrown again
- this.errorEmitted = false;
-
- // count buffered requests
- this.bufferedRequestCount = 0;
-
- // create the two objects needed to store the corked requests
- // they are not a linked list, as no new elements are inserted in there
- this.corkedRequestsFree = new CorkedRequest(this);
- this.corkedRequestsFree.next = new CorkedRequest(this);
-}
-
-WritableState.prototype.getBuffer = function writableStateGetBuffer() {
- var current = this.bufferedRequest;
- var out = [];
- while (current) {
- out.push(current);
- current = current.next;
- }
- return out;
-};
-
-(function () {
- try {
- Object.defineProperty(WritableState.prototype, 'buffer', {
- get: internalUtil.deprecate(function () {
- return this.getBuffer();
- }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.')
- });
- } catch (_) {}
-})();
-
-var Duplex;
-function Writable(options) {
- Duplex = Duplex || require('./_stream_duplex');
-
- // Writable ctor is applied to Duplexes, though they're not
- // instanceof Writable, they're instanceof Readable.
- if (!(this instanceof Writable) && !(this instanceof Duplex)) return new Writable(options);
-
- this._writableState = new WritableState(options, this);
-
- // legacy.
- this.writable = true;
-
- if (options) {
- if (typeof options.write === 'function') this._write = options.write;
-
- if (typeof options.writev === 'function') this._writev = options.writev;
- }
-
- Stream.call(this);
-}
-
-// Otherwise people can pipe Writable streams, which is just wrong.
-Writable.prototype.pipe = function () {
- this.emit('error', new Error('Cannot pipe. Not readable.'));
-};
-
-function writeAfterEnd(stream, cb) {
- var er = new Error('write after end');
- // TODO: defer error events consistently everywhere, not just the cb
- stream.emit('error', er);
- processNextTick(cb, er);
-}
-
-// If we get something that is not a buffer, string, null, or undefined,
-// and we're not in objectMode, then that's an error.
-// Otherwise stream chunks are all considered to be of length=1, and the
-// watermarks determine how many objects to keep in the buffer, rather than
-// how many bytes or characters.
-function validChunk(stream, state, chunk, cb) {
- var valid = true;
-
- if (!Buffer.isBuffer(chunk) && typeof chunk !== 'string' && chunk !== null && chunk !== undefined && !state.objectMode) {
- var er = new TypeError('Invalid non-string/buffer chunk');
- stream.emit('error', er);
- processNextTick(cb, er);
- valid = false;
- }
- return valid;
-}
-
-Writable.prototype.write = function (chunk, encoding, cb) {
- var state = this._writableState;
- var ret = false;
-
- if (typeof encoding === 'function') {
- cb = encoding;
- encoding = null;
- }
-
- if (Buffer.isBuffer(chunk)) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;
-
- if (typeof cb !== 'function') cb = nop;
-
- if (state.ended) writeAfterEnd(this, cb);else if (validChunk(this, state, chunk, cb)) {
- state.pendingcb++;
- ret = writeOrBuffer(this, state, chunk, encoding, cb);
- }
-
- return ret;
-};
-
-Writable.prototype.cork = function () {
- var state = this._writableState;
-
- state.corked++;
-};
-
-Writable.prototype.uncork = function () {
- var state = this._writableState;
-
- if (state.corked) {
- state.corked--;
-
- if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
- }
-};
-
-Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
- // node::ParseEncoding() requires lower case.
- if (typeof encoding === 'string') encoding = encoding.toLowerCase();
- if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding);
- this._writableState.defaultEncoding = encoding;
-};
-
-function decodeChunk(state, chunk, encoding) {
- if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
- chunk = new Buffer(chunk, encoding);
- }
- return chunk;
-}
-
-// if we're already writing something, then just put this
-// in the queue, and wait our turn. Otherwise, call _write
-// If we return false, then we need a drain event, so set that flag.
-function writeOrBuffer(stream, state, chunk, encoding, cb) {
- chunk = decodeChunk(state, chunk, encoding);
-
- if (Buffer.isBuffer(chunk)) encoding = 'buffer';
- var len = state.objectMode ? 1 : chunk.length;
-
- state.length += len;
-
- var ret = state.length < state.highWaterMark;
- // we must ensure that previous needDrain will not be reset to false.
- if (!ret) state.needDrain = true;
-
- if (state.writing || state.corked) {
- var last = state.lastBufferedRequest;
- state.lastBufferedRequest = new WriteReq(chunk, encoding, cb);
- if (last) {
- last.next = state.lastBufferedRequest;
- } else {
- state.bufferedRequest = state.lastBufferedRequest;
- }
- state.bufferedRequestCount += 1;
- } else {
- doWrite(stream, state, false, len, chunk, encoding, cb);
- }
-
- return ret;
-}
-
-function doWrite(stream, state, writev, len, chunk, encoding, cb) {
- state.writelen = len;
- state.writecb = cb;
- state.writing = true;
- state.sync = true;
- if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);
- state.sync = false;
-}
-
-function onwriteError(stream, state, sync, er, cb) {
- --state.pendingcb;
- if (sync) processNextTick(cb, er);else cb(er);
-
- stream._writableState.errorEmitted = true;
- stream.emit('error', er);
-}
-
-function onwriteStateUpdate(state) {
- state.writing = false;
- state.writecb = null;
- state.length -= state.writelen;
- state.writelen = 0;
-}
-
-function onwrite(stream, er) {
- var state = stream._writableState;
- var sync = state.sync;
- var cb = state.writecb;
-
- onwriteStateUpdate(state);
-
- if (er) onwriteError(stream, state, sync, er, cb);else {
- // Check if we're actually ready to finish, but don't emit yet
- var finished = needFinish(state);
-
- if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
- clearBuffer(stream, state);
- }
-
- if (sync) {
- /*<replacement>*/
- asyncWrite(afterWrite, stream, state, finished, cb);
- /*</replacement>*/
- } else {
- afterWrite(stream, state, finished, cb);
- }
- }
-}
-
-function afterWrite(stream, state, finished, cb) {
- if (!finished) onwriteDrain(stream, state);
- state.pendingcb--;
- cb();
- finishMaybe(stream, state);
-}
-
-// Must force callback to be called on nextTick, so that we don't
-// emit 'drain' before the write() consumer gets the 'false' return
-// value, and has a chance to attach a 'drain' listener.
-function onwriteDrain(stream, state) {
- if (state.length === 0 && state.needDrain) {
- state.needDrain = false;
- stream.emit('drain');
- }
-}
-
-// if there's something in the buffer waiting, then process it
-function clearBuffer(stream, state) {
- state.bufferProcessing = true;
- var entry = state.bufferedRequest;
-
- if (stream._writev && entry && entry.next) {
- // Fast case, write everything using _writev()
- var l = state.bufferedRequestCount;
- var buffer = new Array(l);
- var holder = state.corkedRequestsFree;
- holder.entry = entry;
-
- var count = 0;
- while (entry) {
- buffer[count] = entry;
- entry = entry.next;
- count += 1;
- }
-
- doWrite(stream, state, true, state.length, buffer, '', holder.finish);
-
- // doWrite is always async, defer these to save a bit of time
- // as the hot path ends with doWrite
- state.pendingcb++;
- state.lastBufferedRequest = null;
- state.corkedRequestsFree = holder.next;
- holder.next = null;
- } else {
- // Slow case, write chunks one-by-one
- while (entry) {
- var chunk = entry.chunk;
- var encoding = entry.encoding;
- var cb = entry.callback;
- var len = state.objectMode ? 1 : chunk.length;
-
- doWrite(stream, state, false, len, chunk, encoding, cb);
- entry = entry.next;
- // if we didn't call the onwrite immediately, then
- // it means that we need to wait until it does.
- // also, that means that the chunk and cb are currently
- // being processed, so move the buffer counter past them.
- if (state.writing) {
- break;
- }
- }
-
- if (entry === null) state.lastBufferedRequest = null;
- }
-
- state.bufferedRequestCount = 0;
- state.bufferedRequest = entry;
- state.bufferProcessing = false;
-}
-
-Writable.prototype._write = function (chunk, encoding, cb) {
- cb(new Error('not implemented'));
-};
-
-Writable.prototype._writev = null;
-
-Writable.prototype.end = function (chunk, encoding, cb) {
- var state = this._writableState;
-
- if (typeof chunk === 'function') {
- cb = chunk;
- chunk = null;
- encoding = null;
- } else if (typeof encoding === 'function') {
- cb = encoding;
- encoding = null;
- }
-
- if (chunk !== null && chunk !== undefined) this.write(chunk, encoding);
-
- // .end() fully uncorks
- if (state.corked) {
- state.corked = 1;
- this.uncork();
- }
-
- // ignore unnecessary end() calls.
- if (!state.ending && !state.finished) endWritable(this, state, cb);
-};
-
-function needFinish(state) {
- return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing;
-}
-
-function prefinish(stream, state) {
- if (!state.prefinished) {
- state.prefinished = true;
- stream.emit('prefinish');
- }
-}
-
-function finishMaybe(stream, state) {
- var need = needFinish(state);
- if (need) {
- if (state.pendingcb === 0) {
- prefinish(stream, state);
- state.finished = true;
- stream.emit('finish');
- } else {
- prefinish(stream, state);
- }
- }
- return need;
-}
-
-function endWritable(stream, state, cb) {
- state.ending = true;
- finishMaybe(stream, state);
- if (cb) {
- if (state.finished) processNextTick(cb);else stream.once('finish', cb);
- }
- state.ended = true;
- stream.writable = false;
-}
-
-// It seems a linked list but it is not
-// there will be only 2 of these for each stream
-function CorkedRequest(state) {
- var _this = this;
-
- this.next = null;
- this.entry = null;
-
- this.finish = function (err) {
- var entry = _this.entry;
- _this.entry = null;
- while (entry) {
- var cb = entry.callback;
- state.pendingcb--;
- cb(err);
- entry = entry.next;
- }
- if (state.corkedRequestsFree) {
- state.corkedRequestsFree.next = _this;
- } else {
- state.corkedRequestsFree = _this;
- }
- };
-} \ No newline at end of file
generated by cgit v1.2.3 (git 2.26.2) at 2024-07-15 21:41:28 +0000