Change `Plugin` and `Message` from `String` to `Data.Text`

Use the `Data.Text` type instead of `String` in most of the places we
use it in `Plugin` and `Message`.

This allows us to more easily pass data between the IRC package. No more
kludgy `pack`s and `unpack`s in our IRC message handler.

The one thing we couldn't convert was our regex. From what I understand
(https://stackoverflow.com/questions/14922579/haskell-regular-expressions-and-data-text#14922626),
the regex library I'm using doesn't support `Data.Text`, so use
`String`s for that instead.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/Plugin.hs b/src/Plugin.hs
index 73df169..26432d9 100644
--- a/src/Plugin.hs
+++ b/src/Plugin.hs
@@ -4,6 +4,8 @@ module Plugin
     , plugins
     ) where
 
+import qualified Data.Text as T
+
 import Text.Regex.TDFA
 
 import qualified Message as M
@@ -20,7 +22,7 @@ matchPlugin message = firstPlugin $ matchPlugins message plugins
 -- | Filter the list of plugins to those that match the given message.
 matchPlugins :: M.Message -> [Plugin] -> [Plugin]
 matchPlugins message plugins =
-    [p | p <- plugins, M.text message =~ matchRegex p]
+    [p | p <- plugins, (T.unpack $ M.text message) =~ matchRegex p]
 
 -- | Run the action belonging to the plugin, stored in its `perform` field.
 performPlugin :: Plugin -> PluginAction