Add missing config.nim.

src/babelpkg/config.nim

@@ -0,0 +1,38 @@
+# Copyright (C) Dominik Picheta. All rights reserved.
+# BSD License. Look at license.txt for more info.
+import parsecfg, streams, strutils, os
+
+import tools
+
+type
+  TConfig* = object
+    babelDir*: string
+
+proc initConfig(): TConfig =
+  result.babelDir = getHomeDir() / ".babel"
+
+proc parseConfig*(): TConfig =
+  result = initConfig()
+  let confFile = getConfigDir() / "babel" / "babel.ini"
+
+  var f = newFileStream(confFile, fmRead)
+  if f != nil:
+    echo("Reading from config file at ", confFile)
+    var p: TCfgParser
+    open(p, f, confFile)
+    while true:
+      var e = next(p)
+      case e.kind
+      of cfgEof:
+        break
+      of cfgSectionStart: discard
+      of cfgKeyValuePair, cfgOption:
+        case e.key.normalize
+        of "babeldir":
+          result.babelDir = e.value
+        else:
+          raise newException(EBabel, "Unable to parse config file:" &
+                                     " Unknown key: " & e.key)
+      of cfgError:
+        raise newException(EBabel, "Unable to parse config file: " & e.msg)
+    close(p)