random-access-file-reader

random-access-file-reader

An abstract-random-access compliant module for reading files in the browser using the FileReader API and browserify.

npm install random-access-file-reader

Usage

var raf = require('random-access-file-readers')
var drop = require('drag-and-drop-files')

drop(document.body, function (files) {
  var file = raf(files[0])

  file.read(0, 1000, function (err, data) {
    console.log('first 1000 bytes:', err, data)
  })
})

You can use this to read files into hyperdrive as well

var hyperdrive = require('hyperdrive')
var drive = hyperdrive(db)

var files = {}
var archive = drive.createArchive({
  file: function (name) {
    return raf(files[name])
  }
})

drop(document.body, function (files) {
  files[files[0].name] = files[0]
  // will index the file using hyperdrive without reading the entire file into ram
  archive.append(files[0].name)
})

API

var file = raf(browserFile)

Create a new instance. Accepts a browser file object. The file object has an abstract-random-access compliant API interface. Note that it is readonly so writes will fail.

file.length

Contains the byte length of the file.

License

MIT