add some extra stuff to main that doesnt do anything yet

make-pages/Main.hs

@@ -4,6 +4,7 @@ import qualified Data.ByteString.Lazy as ByteString
 import qualified Data.YAML as YAML
 import qualified Data.Text.Lazy.IO as Text
 import qualified Options.Applicative as Opt
+import Text.Printf (printf)
 import Control.Applicative
 import SinglePage
 
@@ -11,20 +12,23 @@ data Options =
     SinglePage {
       file        :: FilePath,
       includeNsfw :: Bool,
-      output      :: Maybe FilePath
+      output      :: Maybe FilePath,
+      copyImages  :: Bool
     }
   | GalleryPage {
       directory   :: FilePath,
       includeNsfw :: Bool,
-      output      :: Maybe FilePath
+      output      :: Maybe FilePath,
+      single      :: Bool
     }
+  deriving Show
 
 optionsParser :: Opt.ParserInfo Options
 optionsParser =
   (Opt.hsubparser (single <> gallery) <**> Opt.helper) `Opt.info` mainInfo
  where
   single = Opt.command "single" $ singleOpts `Opt.info` singleInfo
-  singleOpts = SinglePage <$> fileArg <*> nsfwSwitch <*> outputOpt
+  singleOpts = SinglePage <$> fileArg <*> nsfwSwitch <*> outputOpt <*> copyOpt
   fileArg = Opt.strArgument $
     Opt.metavar "FILE" <> Opt.help "yaml file to read"
   nsfwSwitch = Opt.switch $
@@ -34,12 +38,19 @@ optionsParser =
     Opt.short 'o' <> Opt.long "output" <>
     Opt.value Nothing <>
     Opt.help "output file (default: stdout)"
+  copyOpt = Opt.switch $
+    Opt.short 'c' <> Opt.long "copy" <>
+    Opt.help "copy mentioned image files to output directory"
   singleInfo = Opt.progDesc "generate a page for a single work"
 
   gallery = Opt.command "gallery" $ galleryOpts `Opt.info` galleryInfo
-  galleryOpts = GalleryPage <$> dirArg <*> nsfwSwitch <*> outputOpt
+  galleryOpts =
+    GalleryPage <$> dirArg <*> nsfwSwitch <*> outputOpt <*> singleOpt
   dirArg = Opt.strArgument $
     Opt.metavar "DIR" <> Opt.help "directory to search for yaml files"
+  singleOpt = fmap not $ Opt.switch $
+    Opt.short 'S' <> Opt.long "exclude-single" <>
+    Opt.help "do not generate single pages"
   galleryInfo = Opt.progDesc "generate a gallery page"
 
   mainInfo = Opt.progDesc "static gallery site generator" <> Opt.fullDesc
@@ -51,12 +62,20 @@ main = main2 =<< Opt.execParser optionsParser
 main2 :: Options -> IO ()
 main2 s@(SinglePage {file, includeNsfw, output}) = do
   print s
-  txt <- ByteString.readFile file
+  page <- make includeNsfw <$> readYAML file
-  let Right info = YAML.decode1 txt
-  let page = make includeNsfw info
   case output of
     Nothing  -> Text.putStr page
     Just out -> Text.writeFile out page
+
 main2 g@(GalleryPage {}) = do
   print g
   error "surprise! this doesn't exist yet"
+
+
+readYAML :: YAML.FromYAML a => FilePath -> IO a
+readYAML file = do
+  txt <- ByteString.readFile file
+  case YAML.decode1 txt of
+    Right val -> pure val
+    Left (YAML.Pos {posLine, posColumn}, err) ->
+      fail $ printf "%s:%i:%i: %s" file posLine posColumn err