search for existing translations if the chosen language is not documented

plugins/help/doc.cs

@@ -4,6 +4,6 @@
 
 <div id="doc">
 
-<?cs include:Settings.DocDir + '/' + Settings.Language + '/' + Data.Plugins.help.Page + '.html' ?>
+<?cs include:Settings.DocDir + '/' + Data.Plugins.help.Language + '/' + Data.Plugins.help.Page + '.html' ?>
 
 </div>

plugins/help/help.py

@@ -7,16 +7,35 @@ class help(cryptobox.plugins.base.CryptoBoxPlugin):
 	requestAuth = False
 	rank = 80
 
+	default_lang = 'en'
+	default_page = "CryptoBoxUser"
+
 	def doAction(self, page=""):
 		'''prints the offline wikipage
 		'''
-		import re
-		## check for invalid characters
-		if page and not re.search(u'\W', page):
-			self.hdf[self.hdf_prefix + "Page"] = page
+		import re,os
+		## check for invalid characters and if the page exists in the default language
+		if page and \
+				not re.search(u'\W', page) and \
+				os.path.isfile(os.path.join(self.cbox.prefs["Locations"]["DocDir"], self.efault_lang, page + '.html')):
+			## everything is ok
+			pass
 		else:
 			## display this page as default help page
-			self.hdf[self.hdf_prefix + "Page"] ="CryptoBoxUser"
+			page = self.default_page
+			if page:
+				## issue warning
+				self.cbox.log.info("could not find the selected documentation page: %s" % str(page))
+		## store the name of the page
+		self.hdf[self.hdf_prefix + "Page"] = page
+		## choose the right language
+		for l in self.site.langOrder:
+			if os.path.isfile(os.path.join(self.cbox.prefs["Locations"]["DocDir"], l, page + '.html')):
+				lang = l
+				break
+		else:
+			lang = self.default_lang
+		self.hdf[self.hdf_prefix + "Language"] = lang
 		return "doc"