From 269d874e9dfc9e076eb45ca22397ad2f3715aa29 Mon Sep 17 00:00:00 2001
From: Matthias Hecker <apoc@sixserv.org>
Date: Wed, 5 Mar 2014 13:04:47 +0100
Subject: [registry] use tc by-default if available

---
 lib/rbot/ircbot.rb | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/lib/rbot/ircbot.rb b/lib/rbot/ircbot.rb
index 02414a07..34c82926 100644
--- a/lib/rbot/ircbot.rb
+++ b/lib/rbot/ircbot.rb
@@ -435,8 +435,8 @@ class Bot
       },
       :desc => "Percentage of IRC penalty to consider when sending messages to prevent being disconnected for excess flood. Set to 0 to disable penalty control.")
     Config.register Config::StringValue.new('core.db',
-      :default => "dbm",
-      :wizard => true, :default => "dbm",
+      :default => default_db,
+      :wizard => true,
       :validate => Proc.new { |v| Registry::formats.include? v },
       :requires_restart => true,
       :desc => "DB adaptor to use for storing the plugin data/registries. Options: " + Registry::formats.join(', '))
@@ -822,6 +822,16 @@ class Bot
     end
   end
 
+  # Determine if tokyocabinet is installed, if it is use it as a default.
+  def default_db
+    begin
+      require 'tokyocabinet'
+      return 'tc'
+    rescue LoadError
+      return 'dbm'
+    end
+  end
+
   def repopulate_botclass_directory
     template_dir = File.join Config::datadir, 'templates'
     if FileTest.directory? @botclass
-- 
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