Class | Ferret::Analysis::LetterTokenizer |
In: |
ext/r_analysis.c
|
Parent: | Ferret::Analysis::TokenStream |
A LetterTokenizer is a tokenizer that divides text at non-letters. That is to say, it defines tokens as maximal strings of adjacent letters, as defined by the regular expression _/[[:alpha:]]+/_ where [:alpha] matches all characters in your local locale.
"Dave's résumé, at http://www.davebalmain.com/ 1234" => ["Dave", "s", "résumé", "at", "http", "www", "davebalmain", "com"]
Create a new LetterTokenizer which optionally downcases tokens. Downcasing is done according the current locale.
lower: | set to false if you don‘t wish to downcase tokens |