| var path = require('path'), |
| fs = require('fs'); |
| |
| var mime = module.exports = { |
| /** Map of extension to mime type */ |
| types: {}, |
| |
| /** Map of mime type to extension */ |
| extensions :{}, |
| |
| /** |
| * Define mimetype -> extension mappings. Each key is a mime-type that maps |
| * to an array of extensions associated with the type. The first extension is |
| * used as the default extension for the type. |
| * |
| * e.g. mime.define({'audio/ogg', ['oga', 'ogg', 'spx']}); |
| * |
| * @param map (Object) type definitions |
| */ |
| define: function(map) { |
| for (var type in map) { |
| var exts = map[type]; |
| |
| for (var i = 0; i < exts.length; i++) { |
| mime.types[exts[i]] = type; |
| } |
| |
| // Default extension is the first one we encounter |
| if (!mime.extensions[type]) { |
| mime.extensions[type] = exts[0]; |
| } |
| } |
| }, |
| |
| /** |
| * Load an Apache2-style ".types" file |
| * |
| * This may be called multiple times (it's expected). Where files declare |
| * overlapping types/extensions, the last file wins. |
| * |
| * @param file (String) path of file to load. |
| */ |
| load: function(file) { |
| // Read file and split into lines |
| var map = {}, |
| content = fs.readFileSync(file, 'ascii'), |
| lines = content.split(/[\r\n]+/); |
| |
| lines.forEach(function(line, lineno) { |
| // Clean up whitespace/comments, and split into fields |
| var fields = line.replace(/\s*#.*|^\s*|\s*$/g, '').split(/\s+/); |
| map[fields.shift()] = fields; |
| }); |
| |
| mime.define(map); |
| }, |
| |
| /** |
| * Lookup a mime type based on extension |
| */ |
| lookup: function(path, fallback) { |
| var ext = path.replace(/.*[\.\/]/, '').toLowerCase(); |
| return mime.types[ext] || fallback || mime.default_type; |
| }, |
| |
| /** |
| * Return file extension associated with a mime type |
| */ |
| extension: function(mimeType) { |
| return mime.extensions[mimeType]; |
| }, |
| |
| /** |
| * Lookup a charset based on mime type. |
| */ |
| charsets: { |
| lookup: function (mimeType, fallback) { |
| // Assume text types are utf8. Modify mime logic as needed. |
| return (/^text\//).test(mimeType) ? 'UTF-8' : fallback; |
| } |
| } |
| }; |
| |
| // Load our local copy of |
| // http://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types |
| mime.load(path.join(__dirname, 'types/mime.types')); |
| |
| // Overlay enhancements submitted by the node.js community |
| mime.load(path.join(__dirname, 'types/node.types')); |
| |
| // Set the default type |
| mime.default_type = mime.types.bin; |