[polari] chatView: Linkify channel names

[Florian Müllner <fmuellner src gnome org>]

commit 0b101034a4e662a67498b9977d1cb20bdfcc3fcc
Author: Florian Müllner <fmuellner gnome org>
Date:   Sun Feb 7 16:18:12 2016 +0100

    chatView: Linkify channel names
    
    Now that we handle irc:// links, it makes sense to turn mentions
    of #channel-names into clickable links to assist the user in joining
    the mentioned channel, provided the channel is on the same network.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=762673

 src/chatView.js |   11 ++++++++---
 src/utils.js    |   10 ++++++++++
 2 files changed, 18 insertions(+), 3 deletions(-)
---
diff --git a/src/chatView.js b/src/chatView.js
index 8e0a0b2..f441031 100644
--- a/src/chatView.js
+++ b/src/chatView.js
@@ -1194,8 +1194,12 @@ const ChatView = new Lang.Class({
         if (message.shouldHighlight)
             tags.push(this._lookupTag('highlight'));
 
+        let params = this._room.account.dup_parameters_vardict().deep_unpack();
+        let server = params.server.deep_unpack();
+
         let text = message.text;
-        let urls = Utils.findUrls(text);
+        let channels = Utils.findChannels(text, server);
+        let urls = Utils.findUrls(text).concat(channels).sort((u1,u2) => u1.pos - u2.pos);
         let pos = 0;
         for (let i = 0; i < urls.length; i++) {
             let url = urls[i];
@@ -1204,10 +1208,11 @@ const ChatView = new Lang.Class({
             let tag = this._createUrlTag(url.url);
             this._view.get_buffer().tag_table.add(tag);
 
-            this._insertWithTags(iter, url.url,
+            let name = url.name ? url.name : url.url;
+            this._insertWithTags(iter, name,
                                  tags.concat(this._lookupTag('url'), tag));
 
-            pos = url.pos + url.url.length;
+            pos = url.pos + name.length;
         }
         this._insertWithTags(iter, text.substr(pos), tags);
     },
diff --git a/src/utils.js b/src/utils.js
index 2c63918..edb9e5d 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -73,6 +73,7 @@ const _urlRegexp = new RegExp(
         ')' +
     ')', 'gi');
 
+const _channelRegexp = new RegExp('(^| )#([\\w\\+\\.-]+)','g');
 
 let debugInit = false;
 let debugEnabled = false;
@@ -162,6 +163,15 @@ function findUrls(str) {
     return res;
 }
 
+function findChannels(str, server) {
+    let res = [], match;
+    while ((match = _channelRegexp.exec(str)))
+        res.push({ url: 'irc://%s/%s'.format(server, match[2]),
+                   name: '#' + match[2],
+                   pos: match.index + match[1].length });
+    return res;
+}
+
 function openURL(url, timestamp) {
     let ctx = Gdk.Display.get_default().get_app_launch_context();
     ctx.set_timestamp(timestamp);