Description

An extremely fast Node.js module for parsing form data and primarily file uploads.

Requirements

Node.js 6.14.3 or higher is required.

Installation

npm i @slaviczavik/http-data-parser

Example

const HttpDataParser = require('@slaviczavik/http-data-parser')

// A boundary must be extracted from 'content-type' request header.
const boundary = '--------------------------034172598905589540726558'
const parser = HttpDataParser(boundary)

parser.on('header', function (data, isLast) {
  // Save headers somewhere...

  if (isLast) {
    // Here you may prepare for handling body data,
    // like create a writable stream and so on.
  }
})

parser.on('data', function (data) {
  // Save body content somewhere...
})

parser.on('part', function () {
  // We reached the end of one body part.
  // Here we can concate body content together.
})

parser.on('end', function () {
  // We reached the end of whole body.
  // No other data will come.
})

req.on('data', function (data) {
  parser.write(data)
})

req.on('end', function () {
  parser.end()
})

API

Constructor

HttpDataParser(boundary)

Name	Required	Type	Description	Default
boundary	true	string		none

Methods

The parser is a Node.js Writable Stream, so you can use the write and the end methods, or just only the pipe method.

write(buffer)

Parameter	Required	Type	Description
buffer	true	buffer	Buffer from request body.

end()

Call this method when there is no more data to be consumed from the stream.

Events

header(data, isLast)

Emitted every time when a parser find a header part.

Property	Type	Description
data	buffer	-
isLast	boolean	Signals if it is a last header part.

data(data)

Emitted every time when a parser find a content data.

Property	Type	Description
data	buffer	-

part()

Emitted every time when a parser reach the end of one body part.

end()

Emitted when a parser reached the end of request body.