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85 lines
2.0 KiB
85 lines
2.0 KiB
'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 b instanceof BufferListStream || b instanceof BufferList || BufferListStream.isBufferList(b)
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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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