89 lines
2.0 KiB
JavaScript
89 lines
2.0 KiB
JavaScript
'use strict';
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const DuplexStream = require('readable-stream').Duplex;
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const inherits = require('inherits');
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const BufferList = require('./BufferList');
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function BufferListStream(callback) {
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if (!(this instanceof BufferListStream)) {
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return new BufferListStream(callback);
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}
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if (typeof callback === 'function') {
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this._callback = callback;
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const piper = function piper(err) {
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if (this._callback) {
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this._callback(err);
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this._callback = null;
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}
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}.bind(this);
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this.on('pipe', function onPipe(src) {
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src.on('error', piper);
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});
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this.on('unpipe', function onUnpipe(src) {
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src.removeListener('error', piper);
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});
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callback = null;
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}
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BufferList._init.call(this, callback);
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DuplexStream.call(this);
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}
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inherits(BufferListStream, DuplexStream);
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Object.assign(BufferListStream.prototype, BufferList.prototype);
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BufferListStream.prototype._new = function _new(callback) {
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return new BufferListStream(callback);
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};
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BufferListStream.prototype._write = function _write(buf, encoding, callback) {
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this._appendBuffer(buf);
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if (typeof callback === 'function') {
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callback();
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}
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};
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BufferListStream.prototype._read = function _read(size) {
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if (!this.length) {
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return this.push(null);
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}
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size = Math.min(size, this.length);
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this.push(this.slice(0, size));
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this.consume(size);
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};
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BufferListStream.prototype.end = function end(chunk) {
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DuplexStream.prototype.end.call(this, chunk);
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if (this._callback) {
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this._callback(null, this.slice());
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this._callback = null;
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}
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};
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BufferListStream.prototype._destroy = function _destroy(err, cb) {
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this._bufs.length = 0;
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this.length = 0;
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cb(err);
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};
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BufferListStream.prototype._isBufferList = function _isBufferList(b) {
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return (
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b instanceof BufferListStream ||
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b instanceof BufferList ||
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BufferListStream.isBufferList(b)
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);
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};
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BufferListStream.isBufferList = BufferList.isBufferList;
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module.exports = BufferListStream;
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module.exports.BufferListStream = BufferListStream;
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module.exports.BufferList = BufferList;
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