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// types[extension] = type
exports.types = Object.create(null)
// extensions[type] = [extensions]
exports.extensions = Object.create(null)
// define more mime types
exports.define = define
// store the json files
exports.json = {
mime: require('./mime.json'),
node: require('./node.json'),
custom: require('./custom.json'),
}
exports.lookup = function (string) {
if (!string || typeof string !== "string") return false
string = string.replace(/.*[\.\/\\]/, '').toLowerCase()
if (!string) return false
return exports.types[string] || false
}
exports.extension = function (type) {
if (!type || typeof type !== "string") return false
type = type.match(/^\s*([^;\s]*)(?:;|\s|$)/)
if (!type) return false
var exts = exports.extensions[type[1].toLowerCase()]
if (!exts || !exts.length) return false
return exts[0]
}
// type has to be an exact mime type
exports.charset = function (type) {
// special cases
switch (type) {
case 'application/json': return 'UTF-8'
case 'application/javascript': return 'UTF-8'
}
// default text/* to utf-8
if (/^text\//.test(type)) return 'UTF-8'
return false
}
// backwards compatibility
exports.charsets = {
lookup: exports.charset
}
exports.contentType = function (type) {
if (!type || typeof type !== "string") return false
if (!~type.indexOf('/')) type = exports.lookup(type)
if (!type) return false
if (!~type.indexOf('charset')) {
var charset = exports.charset(type)
if (charset) type += '; charset=' + charset.toLowerCase()
}
return type
}
define(exports.json.mime)
define(exports.json.node)
define(exports.json.custom)
function define(json) {
Object.keys(json).forEach(function (type) {
var exts = json[type] || []
exports.extensions[type] = exports.extensions[type] || []
exts.forEach(function (ext) {
if (!~exports.extensions[type].indexOf(ext)) exports.extensions[type].push(ext)
exports.types[ext] = type
})
})
}
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