1 files changed, 47 insertions, 3 deletions
diff --git a/src/Format.purs b/src/Format.purs
index 22593e5..bed5927 100644
--- a/src/Format.purs
+++ b/src/Format.purs
@@ -1,12 +1,17 @@
-module Format where
+module Format
+  ( number
+  , compare
+  , unaccent
+  ) where
 
 import Data.Int (toNumber, fromNumber)
 import Data.Array (replicate)
 import Data.Maybe (fromMaybe)
-import Data.String (length, joinWith)
+import Data.String (length, joinWith, fromCharArray, toCharArray, toLower)
 import Math (round, trunc, pow)
 
-import Prelude
+import Prelude hiding (compare)
+import Prelude as Prelude
 
 number :: Int -> Number -> String
 number decimalLength num = formattedIntegerPart <> formattedDecimalPart
@@ -27,3 +32,42 @@ number decimalLength num = formattedIntegerPart <> formattedDecimalPart
         # \str -> "," <> (joinWith "" $ replicate (decimalLength - length str) "0") <> str
     else
       ""
+
+compare :: String -> String -> Ordering
+compare xs ys = Prelude.compare (formatString xs) (formatString ys)
+  where formatString = unaccent <<< toLower
+
+unaccent :: String -> String
+unaccent = fromCharArray <<< map unaccentChar <<< toCharArray
+  where
+  unaccentChar :: Char -> Char
+  unaccentChar c = case c of
+    'à' -> 'a'
+    'á' -> 'a'
+    'â' -> 'a'
+    'ã' -> 'a'
+    'ä' -> 'a'
+    'ç' -> 'c'
+    'è' -> 'e'
+    'é' -> 'e'
+    'ê' -> 'e'
+    'ë' -> 'e'
+    'ì' -> 'i'
+    'í' -> 'i'
+    'î' -> 'i'
+    'ï' -> 'i'
+    'ñ' -> 'n'
+    'ò' -> 'o'
+    'ó' -> 'o'
+    'ô' -> 'o'
+    'õ' -> 'o'
+    'ö' -> 'o'
+    'š' -> 's'
+    'ù' -> 'u'
+    'ú' -> 'u'
+    'û' -> 'u'
+    'ü' -> 'u'
+    'ý' -> 'y'
+    'ÿ' -> 'y'
+    'ž' -> 'z'
+    _ -> c