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authorVincent Ambo <mail@tazj.in>2021-12-13T22·51+0300
committerVincent Ambo <mail@tazj.in>2021-12-13T23·15+0300
commit019f8fd2113df4c5247c3969c60fd4f0e08f91f7 (patch)
tree76a857f61aa88f62a30e854651e8439db77fd0ea /users/wpcarro/scratch/groceries/export.hs
parent464bbcb15c09813172c79820bcf526bb10cf4208 (diff)
parent6123e976928ca3d8d93f0b2006b10b5f659eb74d (diff)
subtree(users/wpcarro): docking briefcase at '24f5a642' r/3226
git-subtree-dir: users/wpcarro
git-subtree-mainline: 464bbcb15c09813172c79820bcf526bb10cf4208
git-subtree-split: 24f5a642af3aa1627bbff977f0a101907a02c69f
Change-Id: I6105b3762b79126b3488359c95978cadb3efa789
Diffstat (limited to 'users/wpcarro/scratch/groceries/export.hs')
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diff --git a/users/wpcarro/scratch/groceries/export.hs b/users/wpcarro/scratch/groceries/export.hs
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+module Main where
+
+import qualified Data.List as L
+
+(|>) :: a -> (a -> b) -> b
+x |> f = f x
+
+-- | Ignore items with zero quantity (i.e. "0x") and comments (i.e. "#")
+isUndesirableOutput :: String -> Bool
+isUndesirableOutput x =
+  (L.isPrefixOf "- 0x" x) || (L.isPrefixOf "#" x)
+
+-- | Run this to export the grocery list.
+main :: IO ()
+main = do
+  content <- readFile "./list.org"
+  content
+    |> lines
+    |> filter (not . isUndesirableOutput)
+    |> unlines
+    |> putStrLn
+  pure ()