Detect the file type of a Buffer in Luvit.io.
The file type is detected by checking the magic number of the buffer.
lit install voronianski/file-typelocal http = require('http')
local fileType = require('file-type')
local url = 'http://assets-cdn.github.com/images/spinners/octocat-spinner-32.gif'
http.get(url, function (res)
res:on('data', function (chunk)
print(fileType(chunk))
-- {ext = 'gif', mime = 'image/gif'}
end)
end)Returns a Table (or nil when no match) with:
ext- one of the supported file typesmime- the MIME type
Type: Buffer
It only needs the first 262 bytes.
jpgpnggifwebpflifcr2tifbmpjxrpsdziptarrargzbz27zdmgmp4m4vmidmkvwebmmovaviwmvmpgmp3m4aoggopusflacwavamrpdfepubexeswfrtfwoffwoff2eotttfotficoflvpsxzsqlitenescrxxpicabdebarrpmZlzmsi
SVG isn't included as it requires the whole file to be read.
PR welcome for additional commonly used file types.
MIT Licensed
Copyright (c) 2016 Dmitri Voronianski [email protected]
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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