Fetch perfumes according to multiple materials

1 files changed, 18 insertions, 0 deletions

diff --git a/src/CSV.hs b/src/CSV.hs
new file mode 100644
index 0000000..80c6d76
--- /dev/null
+++ b/src/CSV.hs
@@ -0,0 +1,18 @@
+{-# LANGUAGE OverloadedStrings #-}
+
+module CSV
+  ( getCsv
+  ) where
+
+import Data.Text (Text)
+import qualified Data.Text as T
+
+getCsv :: [[Text]] -> Text
+getCsv = T.intercalate "\n" . map (T.intercalate "," . map quote)
+
+quote :: Text -> Text
+quote text = T.concat [ "\"", T.concatMap escape text, "\"" ]
+
+escape :: Char -> Text
+escape '"' = "\"\""
+escape x = T.singleton x