Makes the code of i18n.py cleaner

More comments; docstrings; remove the % auto-handling (useless).

src/i18n.py

@@ -31,7 +31,7 @@
 Supybot internationalisation and localisation managment.
 """
 
-__all__ = ['PluginInternationalization']
+__all__ = ['PluginInternationalization', 'internationalizeDocstring']
 
 import re
 import sys
@@ -75,10 +75,9 @@ def getLocalePath(name, localeName, extension):
 	directory = ansi.__file__[0:-len('ansi.pyc')] + 'locale'
     return '%s/%s.%s' % (directory, localeName, extension)
 
-i18nSupybot = None
 i18nClasses = {}
 internationalizedCommands = {}
-internationalizedFunctions = []
+internationalizedFunctions = [] # No need to know there name
 
 def reloadLocals():
     for pluginName in i18nClasses:
@@ -89,7 +88,10 @@ def reloadLocals():
 	function.loadLocale()
 	
 
+i18nSupybot = None
 def PluginInternationalization(name='supybot'):
+    # This is a proxy, that prevent Supybot against having more than one
+    # internationalizer
     global i18nSupybot
     if name != 'supybot':
 	return _PluginInternationalization(name)
@@ -109,6 +111,7 @@ class _PluginInternationalization:
 	self.loadLocale()
     
     def loadLocale(self, localeName=None):
+	"""(Re)loads the locale used by this class."""
 	if localeName is None and 'conf' in globals():
 	    localeName = conf.supybot.language()
 	elif localeName is None:
@@ -121,9 +124,15 @@ class _PluginInternationalization:
 	    translationFile = open(getLocalePath(self.name, localeName, 'po'),
 				   'ru') # ru is the mode, not the beginning
 				         # of 'russian' ;)
+	    self._parse(translationFile)
 	except IOError: # The translation is unavailable
 	    self.translations = {}
 	    return
+
+    def _parse(self, translationFile):
+	"""A .po files parser.
+
+	Give it a file object."""
 	step = WAITING_FOR_MSGID
 	self.translations = {}
 	for line in translationFile:
@@ -169,32 +178,22 @@ class _PluginInternationalization:
 		self._translate(untranslated, translated)
     
     def _translate(self, untranslated, translated):
-	self.translations.update({self._parse(untranslated): 
+	self.translations.update({self._unescape(untranslated):
-						    self._parse(translated)})
+						   self._unescape(translated)})
     
-    def _parse(self, string):
+    def _unescape(self, string):
 	return str.replace(string, '\\n', '\n')
     
-    def __call__(self, untranslated, *args):
+    def __call__(self, untranslated):
 	if not 'conf' in globals():
-	    if len(args) == 0:
+	    return untranslated
-		return untranslated
-	    else:
-		translation = self(untranslated)
-		return translation % args
 	if self.currentLocaleName != conf.supybot.language():
 	    # If the locale has been changed
 	    reloadLocals()
-	if len(args) == 0:
+	try:
-	    try:
+	    return self.translations[untranslated]
-		return self.translations[untranslated]
+	except KeyError:
-	    except KeyError:
+	    return untranslated
-		return untranslated
-	else:
-	    try:
-		return self.translations[untranslated] % args
-	    except KeyError:
-		return untranslated % args
 
     def _loadL10nCode(self):
 	if self.name != 'supybot':
@@ -207,19 +206,31 @@ class _PluginInternationalization:
 	functions = locals()
 	functions.pop('self')
 	self._l10nFunctions = functions
+	    # Remove old functions and come back to the native language
     
     def _getL10nCodePath(self):
+	"""Returns the path to the code localization file.
+
+	It contains functions that needs to by fully (code + strings)
+	localized"""
 	if self.name != 'supybot':
 	    return
 	return getLocalePath('supybot', self.currentLocaleName, 'py')
     
     def localizeFunction(self, name):
+	"""Returns the localized version of the function.
+
+	Should be used only by the internationalizedFunction class"""
 	if self.name != 'supybot':
 	    return
-	if hasattr(self, '_l10nFunctions') and self._l10nFunctions.has_key(name):
+	if hasattr(self, '_l10nFunctions') and \
+	    self._l10nFunctions.has_key(name):
 	    return self._l10nFunctions[name]
     
     def internationalizeFunction(self, name):
+	"""Decorates functions and internationalize their code.
+
+	Only useful for Supybot core functions"""
 	if self.name != 'supybot':
 	    return
 	class FunctionInternationalizer:
@@ -233,6 +244,9 @@ class _PluginInternationalization:
 	return FunctionInternationalizer(self, name)
 
 class internationalizedFunction:
+    """Proxy for functions that need to be fully localized.
+
+    The localization code is in locale/LOCALE.py"""
     def __init__(self, internationalizer, name, function):
 	self._internationalizer = internationalizer
 	self._name = name
@@ -247,6 +261,9 @@ class internationalizedFunction:
 	self.__call__ = self._origin
 
 def internationalizeDocstring(obj):
+    """Decorates functions and internationalize their docstring.
+
+    Only useful for commands (commands' docstring is displayed on IRC)"""
     if sys.modules[obj.__module__].__dict__.has_key('_'):
 	internationalizedCommands.update({hash(obj): obj})
 	obj.__doc__=sys.modules[obj.__module__]._.__call__(obj.__doc__)