All files / simple-buffer-queue index.js

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const Buffer = require('safe-buffer').Buffer
 
module.exports = class BufferPipe {
  /**
   * Creates a new instance of a pipe
   * @param {Buffer} buf - an optional buffer to start with
   */
  constructor (buf = Buffer.from([])) {
    this.buffer = buf
  }
 
  /**
   * read `num` number of bytes from the pipe
   * @param {Number} num
   * @return {Buffer}
   */
  read (num) {
    const data = this.buffer.subarray(0, num)
    this.buffer = this.buffer.subarray(num)
    return data
  }
 
  /**
   * Wites a buffer to the pipe
   * @param {Buffer} buf
   */
  write (buf) {
    buf = Buffer.from(buf)
    this.buffer = Buffer.concat([this.buffer, buf])
  }
}