Rewrite using purescript for the implementation

1 files changed, 45 insertions, 0 deletions

diff --git a/src/FS.purs b/src/FS.purs
new file mode 100644
index 0000000..68fe2f9
--- /dev/null
+++ b/src/FS.purs
@@ -0,0 +1,45 @@
+module PursLoader.FS
+  ( FS()
+  , readFileUtf8
+  , readFileUtf8Sync
+  ) where
+
+import Control.Monad.Aff (Aff(), makeAff)
+import Control.Monad.Eff (Eff())
+import Control.Monad.Eff.Exception (Error())
+
+import Data.Function
+
+foreign import data FS :: !
+
+readFileUtf8 :: forall eff. String -> Aff (fs :: FS | eff) String
+readFileUtf8 filepath = makeAff $ runFn3 readFileUtf8Fn filepath
+
+readFileUtf8Sync :: forall eff. String -> Eff (fs :: FS | eff) String
+readFileUtf8Sync filepath = readFileUtf8SyncFn filepath
+
+foreign import readFileUtf8Fn """
+function readFileUtf8Fn(filepath, errback, callback) {
+  return function(){
+    var fs = require('fs');
+
+    fs.readFile(filepath, 'utf-8', function(e, data){
+      if (e) errback(e)();
+      else callback(data)();
+    });
+  };
+}
+""" :: forall eff. Fn3 String
+                       (Error -> Eff (fs :: FS | eff) Unit)
+                       (String -> Eff (fs :: FS | eff) Unit)
+                       (Eff (fs :: FS | eff) Unit)
+
+foreign import readFileUtf8SyncFn """
+function readFileUtf8SyncFn(filepath) {
+  return function(){
+    var fs = require('fs');
+
+    return fs.readFileSync(filepath, {encoding: 'utf-8'});
+  };
+}
+""" :: forall eff. String -> (Eff (fs :: FS | eff) String)