64 lines
1.7 KiB
JavaScript
64 lines
1.7 KiB
JavaScript
![]() |
|
||
|
var db = require('mime-db')
|
||
|
|
||
|
// types[extension] = type
|
||
|
exports.types = Object.create(null)
|
||
|
// extensions[type] = [extensions]
|
||
|
exports.extensions = Object.create(null)
|
||
|
|
||
|
Object.keys(db).forEach(function (name) {
|
||
|
var mime = db[name]
|
||
|
var exts = mime.extensions
|
||
|
if (!exts || !exts.length) return
|
||
|
exports.extensions[name] = exts
|
||
|
exts.forEach(function (ext) {
|
||
|
exports.types[ext] = name
|
||
|
})
|
||
|
})
|
||
|
|
||
|
exports.lookup = function (string) {
|
||
|
if (!string || typeof string !== "string") return false
|
||
|
// remove any leading paths, though we should just use path.basename
|
||
|
string = string.replace(/.*[\.\/\\]/, '').toLowerCase()
|
||
|
if (!string) return false
|
||
|
return exports.types[string] || false
|
||
|
}
|
||
|
|
||
|
exports.extension = function (type) {
|
||
|
if (!type || typeof type !== "string") return false
|
||
|
// to do: use media-typer
|
||
|
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) {
|
||
|
var mime = db[type]
|
||
|
if (mime && mime.charset) return mime.charset
|
||
|
|
||
|
// default text/* to utf-8
|
||
|
if (/^text\//.test(type)) return 'UTF-8'
|
||
|
|
||
|
return false
|
||
|
}
|
||
|
|
||
|
// backwards compatibility
|
||
|
exports.charsets = {
|
||
|
lookup: exports.charset
|
||
|
}
|
||
|
|
||
|
// to do: maybe use set-type module or something
|
||
|
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
|
||
|
}
|