accept-language-parser

Parses the accept-language header from an HTTP request and produces an array of language objects sorted by quality.

Installation:

npm install accept-language-parser

API

parser.parse(acceptLanguageHeader)

var parser = require('accept-language-parser');

var languages = parser.parse('en-GB,en;q=0.8');

console.log(languages);

Output will be:

[
  {
    code: "en",
    region: "GB",
    quality: 1.0
  },
  {
    code: "en",
    region: undefined,
    quality: 0.8
  }
];

Output is always sorted in quality order from highest -> lowest. As per the HTTP spec, omitting the quality value implies 1.0.

parser.pick(supportedLangugagesArray, acceptLanguageHeader, options = {})

Alias: parser.pick(supportedLanguagesArray, parsedAcceptLanguageHeader)

var parser = require('accept-language-parser');

var language = parser.pick(['fr-CA', 'fr-FR', 'fr'], 'en-GB,en-US;q=0.9,fr-CA;q=0.7,en;q=0.8');

console.log(language);

Output will be:

"fr-CA"

The options currently supports only the loose option which allows partial matching on supported languages.

For example:

parser.pick(['fr', 'en'], 'en-GB,en-US;q=0.9,fr-CA;q=0.7,en;q=0.8', { loose: true });

Would return:

"fr"

In loose mode the order of supportedLanguagesArray matters, as it is the first partially matching language that is returned. It means that if you want to pick more specific langauges first, you should list it first as well.

For example:

['fr-CA', 'fr']

Running test

npm install
npm test

License

MIT

License

opentable/accept-language-parser

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