初始化项目

server-tp6/node_modules/bare-stream/index.js

@@ -0,0 +1,282 @@
+const stream = require('streamx')
+
+const defaultEncoding = 'utf8'
+
+exports.pipeline = stream.pipeline
+
+exports.isStream = stream.isStream
+
+exports.Readable = class Readable extends stream.Readable {
+  constructor (opts = {}) {
+    super(opts)
+
+    if (this._construct) this._open = this._construct
+
+    if (this._read !== stream.Readable.prototype._read) {
+      this._read = read.bind(this, this._read)
+    }
+
+    if (this._destroy !== stream.Stream.prototype._destroy) {
+      this._destroy = destroy.bind(this, this._destroy)
+    }
+  }
+
+  push (chunk, encoding) {
+    if (typeof chunk === 'string') {
+      chunk = Buffer.from(chunk, encoding || defaultEncoding)
+    }
+
+    return super.push(chunk)
+  }
+
+  unshift (chunk, encoding) {
+    if (typeof chunk === 'string') {
+      chunk = Buffer.from(chunk, encoding || defaultEncoding)
+    }
+
+    super.unshift(chunk)
+  }
+}
+
+exports.Writable = class Writable extends stream.Writable {
+  constructor (opts = {}) {
+    super({ ...opts, byteLengthWritable })
+
+    if (this._construct) this._open = this._construct
+
+    if (this._write !== stream.Writable.prototype._write) {
+      this._write = write.bind(this, this._write)
+    }
+
+    if (this._destroy !== stream.Stream.prototype._destroy) {
+      this._destroy = destroy.bind(this, this._destroy)
+    }
+  }
+
+  write (chunk, encoding, cb) {
+    if (typeof encoding === 'function') {
+      cb = encoding
+      encoding = null
+    }
+
+    if (typeof chunk === 'string') {
+      encoding = encoding || defaultEncoding
+      chunk = Buffer.from(chunk, encoding)
+    } else {
+      encoding = 'buffer'
+    }
+
+    const result = super.write({ chunk, encoding })
+
+    if (cb) stream.Writable.drained(this).then(cb, cb)
+
+    return result
+  }
+
+  end (chunk, encoding, cb) {
+    if (typeof chunk === 'function') {
+      cb = chunk
+      chunk = null
+    } else if (typeof encoding === 'function') {
+      cb = encoding
+      encoding = null
+    }
+
+    if (typeof chunk === 'string') {
+      encoding = encoding || defaultEncoding
+      chunk = Buffer.from(chunk, encoding || defaultEncoding)
+    } else {
+      encoding = 'buffer'
+    }
+
+    const result = chunk !== undefined && chunk !== null
+      ? super.end({ chunk, encoding })
+      : super.end()
+
+    if (cb) this.once('end', cb)
+
+    return result
+  }
+}
+
+exports.Duplex = class Duplex extends stream.Duplex {
+  constructor (opts = {}) {
+    super({ ...opts, byteLengthWritable })
+
+    if (this._construct) this._open = this._construct
+
+    if (this._read !== stream.Readable.prototype._read) {
+      this._read = read.bind(this, this._read)
+    }
+
+    if (this._write !== stream.Duplex.prototype._write) {
+      this._write = write.bind(this, this._write)
+    }
+
+    if (this._destroy !== stream.Stream.prototype._destroy) {
+      this._destroy = destroy.bind(this, this._destroy)
+    }
+  }
+
+  push (chunk, encoding) {
+    if (typeof chunk === 'string') {
+      chunk = Buffer.from(chunk, encoding || defaultEncoding)
+    }
+
+    return super.push(chunk)
+  }
+
+  unshift (chunk, encoding) {
+    if (typeof chunk === 'string') {
+      chunk = Buffer.from(chunk, encoding || defaultEncoding)
+    }
+
+    super.unshift(chunk)
+  }
+
+  write (chunk, encoding, cb) {
+    if (typeof encoding === 'function') {
+      cb = encoding
+      encoding = null
+    }
+
+    if (typeof chunk === 'string') {
+      encoding = encoding || defaultEncoding
+      chunk = Buffer.from(chunk, encoding)
+    } else {
+      encoding = 'buffer'
+    }
+
+    const result = super.write({ chunk, encoding })
+
+    if (cb) stream.Writable.drained(this).then(cb, cb)
+
+    return result
+  }
+
+  end (chunk, encoding, cb) {
+    if (typeof chunk === 'function') {
+      cb = chunk
+      chunk = null
+    } else if (typeof encoding === 'function') {
+      cb = encoding
+      encoding = null
+    }
+
+    if (typeof chunk === 'string') {
+      encoding = encoding || defaultEncoding
+      chunk = Buffer.from(chunk, encoding)
+    } else {
+      encoding = 'buffer'
+    }
+
+    const result = chunk !== undefined && chunk !== null
+      ? super.end({ chunk, encoding })
+      : super.end()
+
+    if (cb) this.once('end', cb)
+
+    return result
+  }
+}
+
+exports.Transform = class Transform extends stream.Transform {
+  constructor (opts = {}) {
+    super({ ...opts, byteLengthWritable })
+
+    if (this._transform !== stream.Transform.prototype._transform) {
+      this._transform = transform.bind(this, this._transform)
+    } else {
+      this._transform = passthrough
+    }
+  }
+
+  push (chunk, encoding) {
+    if (typeof chunk === 'string') {
+      chunk = Buffer.from(chunk, encoding || defaultEncoding)
+    }
+
+    return super.push(chunk)
+  }
+
+  unshift (chunk, encoding) {
+    if (typeof chunk === 'string') {
+      chunk = Buffer.from(chunk, encoding || defaultEncoding)
+    }
+
+    super.unshift(chunk)
+  }
+
+  write (chunk, encoding, cb) {
+    if (typeof encoding === 'function') {
+      cb = encoding
+      encoding = null
+    }
+
+    if (typeof chunk === 'string') {
+      encoding = encoding || defaultEncoding
+      chunk = Buffer.from(chunk, encoding)
+    } else {
+      encoding = 'buffer'
+    }
+
+    const result = super.write({ chunk, encoding })
+
+    if (cb) stream.Writable.drained(this).then(cb, cb)
+
+    return result
+  }
+
+  end (chunk, encoding, cb) {
+    if (typeof chunk === 'function') {
+      cb = chunk
+      chunk = null
+    } else if (typeof encoding === 'function') {
+      cb = encoding
+      encoding = null
+    }
+
+    if (typeof chunk === 'string') {
+      encoding = encoding || defaultEncoding
+      chunk = Buffer.from(chunk, encoding)
+    } else {
+      encoding = 'buffer'
+    }
+
+    const result = chunk !== undefined && chunk !== null
+      ? super.end({ chunk, encoding })
+      : super.end()
+
+    if (cb) this.once('end', cb)
+
+    return result
+  }
+}
+
+exports.PassThrough = class PassThrough extends exports.Transform {}
+
+function read (read, cb) {
+  read.call(this, 65536)
+
+  cb(null)
+}
+
+function write (write, data, cb) {
+  write.call(this, data.chunk, data.encoding, cb)
+}
+
+function transform (transform, data, cb) {
+  transform.call(this, data.chunk, data.encoding, cb)
+}
+
+function destroy (destroy, cb) {
+  destroy.call(this, stream.getStreamError(this), cb)
+}
+
+function passthrough (data, cb) {
+  cb(null, data.chunk)
+}
+
+function byteLengthWritable (data) {
+  return data.chunk.byteLength
+}