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-
-
- 'use strict'
-
-
-
- var Negotiator = require('negotiator')
- var mime = require('mime-types')
-
-
-
- module.exports = Accepts
-
-
-
- function Accepts (req) {
- if (!(this instanceof Accepts)) {
- return new Accepts(req)
- }
-
- this.headers = req.headers
- this.negotiator = new Negotiator(req)
- }
-
-
-
- Accepts.prototype.type =
- Accepts.prototype.types = function (types_) {
- var types = types_
-
-
- if (types && !Array.isArray(types)) {
- types = new Array(arguments.length)
- for (var i = 0; i < types.length; i++) {
- types[i] = arguments[i]
- }
- }
-
-
- if (!types || types.length === 0) {
- return this.negotiator.mediaTypes()
- }
-
-
- if (!this.headers.accept) {
- return types[0]
- }
-
- var mimes = types.map(extToMime)
- var accepts = this.negotiator.mediaTypes(mimes.filter(validMime))
- var first = accepts[0]
-
- return first
- ? types[mimes.indexOf(first)]
- : false
- }
-
-
-
- Accepts.prototype.encoding =
- Accepts.prototype.encodings = function (encodings_) {
- var encodings = encodings_
-
-
- if (encodings && !Array.isArray(encodings)) {
- encodings = new Array(arguments.length)
- for (var i = 0; i < encodings.length; i++) {
- encodings[i] = arguments[i]
- }
- }
-
-
- if (!encodings || encodings.length === 0) {
- return this.negotiator.encodings()
- }
-
- return this.negotiator.encodings(encodings)[0] || false
- }
-
-
-
- Accepts.prototype.charset =
- Accepts.prototype.charsets = function (charsets_) {
- var charsets = charsets_
-
-
- if (charsets && !Array.isArray(charsets)) {
- charsets = new Array(arguments.length)
- for (var i = 0; i < charsets.length; i++) {
- charsets[i] = arguments[i]
- }
- }
-
-
- if (!charsets || charsets.length === 0) {
- return this.negotiator.charsets()
- }
-
- return this.negotiator.charsets(charsets)[0] || false
- }
-
-
-
- Accepts.prototype.lang =
- Accepts.prototype.langs =
- Accepts.prototype.language =
- Accepts.prototype.languages = function (languages_) {
- var languages = languages_
-
-
- if (languages && !Array.isArray(languages)) {
- languages = new Array(arguments.length)
- for (var i = 0; i < languages.length; i++) {
- languages[i] = arguments[i]
- }
- }
-
-
- if (!languages || languages.length === 0) {
- return this.negotiator.languages()
- }
-
- return this.negotiator.languages(languages)[0] || false
- }
-
-
-
- function extToMime (type) {
- return type.indexOf('/') === -1
- ? mime.lookup(type)
- : type
- }
-
-
-
- function validMime (type) {
- return typeof type === 'string'
- }
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