What's the Regular Expression that matches culture names?

I'd like to use a regular expression to filter culture names (like en-US or pt-BR). Anyone has any id开发者_运维问答ea?

Try this:

^[a-z]{2}-[A-Z]{2}$

Or more general (see RFC 4647):

^[A-Za-z]{1,8}(-[A-Za-z0-9]{1,8})*$

If you want follow the RFC 4646 format for the culture name (who is <languagecode2>-<country/regioncode2>, where <languagecode2> is the language code and <country/regioncode2> is the subculture code)

Example: "en", "en-UK", "fr", "fr-FR", ...

Use this Regex:

^[a-z]{2}(-[A-Z]{2})* 

C# code sample

Regex.IsMatch(culture, @"^[a-z]{2}(-[A-Z]{2})*$")

Try this to match all available Culture:

^(\w{2,3}-\w{2,4}(-\w{2})?)$

samples:

de-DE

bm-Latn-ML

brx-IN

vai-Vaii-LR

@Gumbo is right. A test:

In [1]: import re

In [2]: reg = re.compile("^[a-z]{2}-[A-Z]{2}$")

In [3]: url = 'en-US'

In [4]: m = reg.match(url)

the result shows that it Matched.