[polari] room: Strip color codes from status messages

[Florian Müllner <fmuellner src gnome org>]

commit d7c4a0a7f071249c30520234836c2f9bce7bd06b
Author: Florian Müllner <fmuellner gnome org>
Date:   Tue Oct 29 18:18:57 2013 +0100

    room: Strip color codes from status messages
    
    Parts of status messages (leave/quit) are under user control and
    may contain fancy color codes as supported by some clients. We
    are not one of them (and probably shouldn't be one either), but
    displaying raw escape sequences looks clearly broken, so strip
    them out.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=711081

 src/lib/polari-room.c |   19 +++++++++++++++++--
 1 files changed, 17 insertions(+), 2 deletions(-)
---
diff --git a/src/lib/polari-room.c b/src/lib/polari-room.c
index a72a403..9ac2e8e 100644
--- a/src/lib/polari-room.c
+++ b/src/lib/polari-room.c
@@ -68,6 +68,8 @@ enum
 
 static guint signals[LAST_SIGNAL];
 
+static GRegex *color_code_regex = NULL;
+
 G_DEFINE_TYPE_WITH_PRIVATE (PolariRoom, polari_room, G_TYPE_OBJECT)
 
 #define tp_properties_changed_cb \
@@ -192,6 +194,14 @@ polari_room_compare (PolariRoom *room,
   return strcmp (room->priv->display_name, other->priv->display_name);
 }
 
+static char *
+strip_color_codes (const char *string) {
+  if (G_UNLIKELY (color_code_regex == NULL))
+    color_code_regex = g_regex_new ("\x03(?:[0-9]{1,2}(?:,[0-9]{1,2})?)?",
+                                    G_REGEX_OPTIMIZE, 0, NULL);
+  return g_regex_replace_literal (color_code_regex, string, -1, 0, "", 0, NULL);
+}
+
 static void
 update_self_nick (PolariRoom *room)
 {
@@ -275,11 +285,15 @@ on_group_contacts_changed (TpChannel  *channel,
                            gpointer    user_data)
 {
   TpChannelGroupChangeReason reason;
-  const char *message;
+  const char *raw_message;
+  char *message = NULL;
   int i;
 
   reason = tp_asv_get_uint32 (details, "change-reason", NULL);
-  message = tp_asv_get_string (details, "message");
+  raw_message = tp_asv_get_string (details, "message");
+
+  if (raw_message)
+    message = strip_color_codes (raw_message);
 
   switch (reason)
     {
@@ -314,6 +328,7 @@ on_group_contacts_changed (TpChannel  *channel,
     }
 
   g_signal_emit (user_data, signals[MEMBERS_CHANGED], 0);
+  g_free (message);
 }
 
 static void