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AcceptLanguage: A Thread-Safe Ruby Library for Parsing Accept-Language HTTP Headers

By

cyrilllllll

4mo ago· 3 min readenCode

Summary

AcceptLanguage is a lightweight, thread-safe Ruby library designed for parsing Accept-Language HTTP headers according to RFC 2616 standards. The library handles quality values (q-values) with precision, supports proper declaration order for languages with equal preference, and provides robust parsing of HTTP header fields for language negotiation in web applications.

Key quotes

· 4 pulled
A lightweight, thread-safe Ruby library for parsing the Accept-Language HTTP header field.
Quality values (q-values) indicate relative preference, ranging from 0 (not acceptable) to 1 (most preferred). When omitted, the default is 1.
Per RFC 7231 Section 5.3.1, valid q-values have at most three decimal places: 0, 0.7, 0.85, 1.000. Invalid q-values cause the associated language range to be ignored.
When multiple languages share the same q-value, declaration order in the header
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A lightweight, thread-safe Ruby library for parsing Accept-Language HTTP headers as defined in RFC 2616. - cyril/accept_language.rb

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