Improved handling of RTL nicknames in roster. Fixes #4293

If the number of connected resources is appended in parentheses,
the appropriate ltr or rtl mark is inserted before, so that the
writing direction at the end of the nickname matches the writing
direction of the whole displayed string as determined by
http://www.unicode.org/reports/tr9/#The_Paragraph_Level

src/common/i18n.py

@@ -5,6 +5,7 @@
 ## Copyright (C) 2004 Vincent Hanquez <tab AT snarc.org>
 ## Copyright (C) 2004-2007 Yann Leboulanger <asterix AT lagaule.org>
 ## Copyright (C) 2005-2006 Nikos Kouremenos <kourem AT gmail.com>
+## Copyright (C) 2009 Benjamin Richter <br AT waldteufel-online.net>
 ##
 ## This file is part of Gajim.
 ##
@@ -25,6 +26,19 @@ import locale
 import gettext
 import os
 import defs
+import unicodedata
+
+def paragraph_direction_mark(text):
+	"""Determine paragraph writing direction according to
+	http://www.unicode.org/reports/tr9/#The_Paragraph_Level
+	
+	Returns either Unicode LTR mark or RTL mark."""
+	for c in text:
+		bidi = unicodedata.bidirectional(c)
+		if bidi == 'L': return u'\u200E'
+		elif bidi == 'AL' or bidi == 'R': return u'\u200F' 
+
+	return u'\u200E'
 
 APP = 'gajim'
 DIR = defs.localedir

src/roster_window.py

@@ -1113,7 +1113,9 @@ class RosterWindow:
 			if c.show not in ('error', 'offline'):
 				nb_connected_contact += 1
 		if nb_connected_contact > 1:
-			name += ' (' + unicode(nb_connected_contact) + ')'
+			# switch back to default writing direction
+			name += i18n.paragraph_direction_mark(unicode(name))
+			name += u' (%d)' % nb_connected_contact
 
 		# show (account_name) if there are 2 contact with same jid
 		# in merged mode