mimetype-js
Overview
I find keep making these file extension lookup tables for mime types. It's about time I put it in a module to save me the trouble.
Examples
general case
var mimetype = require('mimetype'); console.log(mimetype.lookup("myfile.txt")); // Should display text/plain mimetype.set('.exotic', 'x-application/experimental'); // Add/update a mime type in the catalog console.log(mimetype.lookup("myfile.exotic")); // Should display x-application/experimental mimetype.del('.exotic'); // Removes the mime type from the catalog console.log(mimetype.lookup("myfile.exitoc")); // Should display false mimetype.forEach(function (ext, mime_type_string) { console.log(ext, mime_type_string); // Display the extension and matching mimetype in catalog });
Special cases
Sometimes detecting by filename extensions isn't work and you want to default to a general purposes mime-type (e.g. text/plain, application/octet-stream).
var mimetype = require('mimetype'); // This should display 0 (false) console.log(mimetype.lookup("filename.unknownMimeType"); // This should display the string text/plain console.log(mimetype.lookup("filename.unknownMimeType", false, "text/plain"); // This should display the string text/plain; charset=UTF-8 console.log(mimetype.lookup("filename.unknownMimeType", "UTF-8", "text/plain");
Using mimetype.js with MongoDB Shell
While this was implemented as a NodeJS module it also works under MongoDB's shell. Instead of including with a "require" you would load the JavaScript file load-mimetype.js.
load("./extras/load-mimetype.js"); print("Check the mime type of test.txt:" + MimeType.lookup("test.txt"));
This would display something like-
MongoDB shell version: 2.2.0 connecting to: test > load; > print; Check the mime type of test.txt: text/plain >