[Nuxeo-localizer] user prefered language

[Olivier Nibart]

Hi all,

First of all, I hope I'm not boring you with the same-newbie-question, but I
didn't find any answer in the archives.

I want the first language shown on a web page to be the user prefered one.

But I found that it works well only if the langages list set at browser
level is set with only one language.
For example, with a default language set on Localizer as EN, if I set my
browser with FR as the first language, and EN as the second one, Localizer
will use EN.

I found that all the qualities of the languages in the AcceptLanguage
instance where set to 1.0, thus loosing the user prefs sorting.
I wanted also any complex language (ie fr-be or en-us) to be simplified (fr
or en), but this is specific as others may want to go to that level of
localisation.
  
So I made a script, added to the accept_method list, wich I give you for
comments or suggestions (I'm also new to python...) :

-----------------------------------
import string
request = container.REQUEST

user_languages = accept_language.parse(request['HTTP_ACCEPT_LANGUAGE'])
available_languages = container.get_available_languages()
default_languages = container.get_default_language()

# clean up language ID (ie fr-be or nl-be)

for lang in user_languages.keys():
  if (len(lang) > 2) and (lang[2] == '-'):
    clean_lang = lang[:2]
    user_languages[clean_lang] = user_languages[lang]
    del user_languages[lang]

# choose the lang to use
# - if q > 1.0 (via accept_path or accept_cookies), use that q
# - if q<= 1.0 use q found in HTTP_ACCEPT_LANGUAGE

language, quality = None, 0.0
for lang in available_languages:
  q = accept_language.get_quality(lang)
  if (q <= 1.0) and (user_languages.has_key(lang)):
    q = user_languages[lang]  if q > quality:
    language, quality = lang, q

# if a lang as been determined, set it's q to 4.0 to be sure it'll be the
one used

if language != None:
  accept_language.set(language, 4.0)

# set SELECTED_LANGUAGE, as we use it later
selected_language = container.get_selected_language()
request.set('SELECTED_LANGUAGE', selected_language)
-----------------------------------

Did I miss something, or was it the right to do it ?

Anyway, at least for non-US people, this product is **very** valuable,
thanks a lot David !

Olivier Nibart
Amtoys - Belgium