Index: roundup/configuration.py
===================================================================
RCS file: /cvsroot/roundup/roundup/roundup/configuration.py,v
retrieving revision 1.27
diff -u -r1.27 configuration.py
--- roundup/configuration.py	7 Oct 2005 04:42:13 -0000	1.27
+++ roundup/configuration.py	2 Dec 2005 12:52:35 -0000
@@ -474,6 +474,11 @@
             "variables supplied by your web server (in that order).\n"
             "Set this option to 'no' if you do not wish to use HTTP Basic\n"
             "Authentication in your web interface."),
+        (BooleanOption, 'use_browser_language', "no",
+            "Whether to use HTTP Accept-Language, if present.\n"
+            "Browsers send a language-region preference list. It's usually set\n"
+            "in the client's browser or in his Operating System.\n"
+            "Set this option to 'no' if you want to ignore it."),
     )),
     ("rdbms", (
         (Option, 'name', 'roundup',
Index: roundup/cgi/client.py
===================================================================
RCS file: /cvsroot/roundup/roundup/roundup/cgi/client.py,v
retrieving revision 1.216
diff -u -r1.216 client.py
--- roundup/cgi/client.py	18 Jul 2005 02:19:40 -0000	1.216
+++ roundup/cgi/client.py	2 Dec 2005 14:19:13 -0000
@@ -15,6 +15,7 @@
 from roundup.cgi.exceptions import *
 from roundup.cgi.form_parser import FormParser
 from roundup.mailer import Mailer, MessageSendError
+from roundup.cgi import accept_language
 
 def initialiseSecurity(security):
     '''Create some Permissions and Roles on the security object
@@ -226,6 +227,8 @@
         try:
             self.determine_charset()
 
+            self.determine_language()
+
             # make sure we're identified (even anonymously)
             self.determine_user()
 
@@ -386,6 +389,31 @@
                     value = re_charref.sub(_decode_charref, value)
                     field.value = encoder(value)[0]
 
+    def determine_language(self):
+        ''' Determine the language
+        '''
+        # look for language parameter
+        # then for language cookie
+        # last for the Accept-Language header
+        if self.form.has_key("@language"):
+            language = self.form["@language"].value
+            if language.lower() == "none":
+                language = ""
+            self.add_cookie("roundup_language", language)
+        elif self.cookie.has_key("roundup_language"):
+            language = self.cookie["roundup_language"].value
+        elif self.instance.config["WEB_USE_BROWSER_LANGUAGE"]:
+            hal = self.env['HTTP_ACCEPT_LANGUAGE']
+            language = accept_language.parse(hal)
+        else:
+            language = ""
+
+        self.language = language
+        if language:
+            self.setTranslator(TranslationService.get_translation(
+                    language,
+                    tracker_home=self.instance.config["TRACKER_HOME"]))
+
     def determine_user(self):
         ''' Determine who the user is
         '''
Index: roundup/scripts/roundup_server.py
===================================================================
RCS file: /cvsroot/roundup/roundup/roundup/scripts/roundup_server.py,v
retrieving revision 1.79
diff -u -r1.79 roundup_server.py
--- roundup/scripts/roundup_server.py	13 Apr 2005 06:12:12 -0000	1.79
+++ roundup/scripts/roundup_server.py	2 Dec 2005 12:00:41 -0000
@@ -230,6 +230,7 @@
         env['HTTP_HOST'] = self.headers['host']
         if os.environ.has_key('CGI_SHOW_TIMING'):
             env['CGI_SHOW_TIMING'] = os.environ['CGI_SHOW_TIMING']
+        env['HTTP_ACCEPT_LANGUAGE'] = self.headers.getheader('accept-language')
 
         # do the roundup thing
         tracker = self.get_tracker(tracker_name)