Class LanguageParser


public class LanguageParser extends ListParser<Locale>
LanguageParser is used to parse the HTTP Accept-Language header. This takes in an Accept-Language header and parses it according the RFC 2616 BNF for the Accept-Language header. This also has the ability to sequence the language tokens in terms of the most preferred and the least preferred.

This uses the qvalues outlined by RFC 2616 to order the language tokens by preference. Typically the language tokens will not have qvalues with the language. However when a language tag has the qvalue parameter then this tag will be ordered based on the value of that parameter. A language tag without the qvalue parameter is considered to have a qvalue of 1 and is ordered accordingly.

Author:
Niall Gallagher
  • Constructor Details

    • LanguageParser

      public LanguageParser()
      This is used to create a LanguageParser for the Accept-Language HTTP header value. This will parse a set of language tokens and there parameters. The languages will be ordered on preference. This constructor will parse the value given using parse(String).
    • LanguageParser

      public LanguageParser(String text)
      This is used to create a LanguageParser for the Accept-Language HTTP header value. This will parse a set of language tokens and there parameters. The languages will be ordered on preference. This constructor will parse the value given using parse(String).
      Parameters:
      text - value of a Accept-Language header
    • LanguageParser

      public LanguageParser(List<String> list)
      This is used to create a LanguageParser for the Accept-Language HTTP header value. This will parse a set of language tokens and there parameters. The languages will be ordered on preference. This constructor will parse the value given using parse(String).
      Parameters:
      list - value of a Accept-Language header
  • Method Details

    • create

      protected Locale create(char[] text, int start, int len)
      This creates a locale object using an offset and a length. The locale is created from the extracted token and the offset and length ensure that no leading or trailing whitespace are within the created locale object.
      Specified by:
      create in class ListParser<Locale>
      Parameters:
      text - this is the text buffer to acquire the value from
      start - the offset within the array to take characters
      len - this is the number of characters within the token