mime-kind

mime-kind

Detect the mime type of a Buffer, ReadStream, file path and file name.

Install

npm install mime-kind

Usage

var fs = require('fs');
var mime = require('mime-kind');

mime('.somefakeext'); // false
mime(fs.createReadStream('./anonim.jpg')); // {ext: 'jpeg', mime: 'image/jpeg'}

API

mime(data, [defaultValue])

Returns an object (or false when no match) with:

• ext - file type
• mime - the MIME type

Params:

• data (Buffer|ReadStream|String) - Buffer, ReadStream, file path or file name.
• [defaultValue] (String|Object) - String or Object with value which will be returned if no match will be found. If defaultValue is incorrect returns false.

var mime = require('mime-kind');

mime('c:/anonim.jpeg'); // {ext: 'jpeg', mime: 'image/jpeg'}

mime('.somefakeext', 'application/octet-stream'); // {ext: 'bin', mime: 'application/octet-stream'}
mime('.somefakeext', {ext: 'mp4', mime: 'video/mp4'}); // {ext: 'mp4', mime: 'video/mp4'}
mime('.somefakeext', 'ogg'); // {ext: 'ogg', mime: 'audio/ogg'}
//but
mime('.somefakeext', 'ogg3'); // false

var fs = require('fs');
var mime = require('mime-kind');

function chunkSync(data, length) {
  var buf = new Buffer(length);
  var fd = fs.openSync(data.path, data.flags);

  fs.readSync(fd, buf, 0, length);
  fs.closeSync(fd);

  return buf;
}

mime(chunkSync({path: './anonim.jpeg', flags: 'r'}, 262); // {ext: 'jpeg', mime: 'image/jpeg'}

License

The MIT License (MIT)
Copyright (c) 2015 Alexey Bystrov