432 lines
14 KiB
Haskell
432 lines
14 KiB
Haskell
{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE NoImplicitPrelude #-}
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import Protolude
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import Development.Shake
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-- import Development.Shake.Command
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import Development.Shake.FilePath
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import Data.Time.Format.ISO8601 (iso8601Show)
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import qualified Data.Time.Clock as Clock
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import Control.Monad.Fail
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import Data.Aeson
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-- import qualified Text.Megaparsec as Megaparsec
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import Data.Default ( Default(def) )
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import qualified Data.Text as T
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import Text.Mustache
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import Text.Pandoc.Class (PandocMonad)
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import qualified Text.Pandoc.Class as Pandoc
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import Text.Pandoc.Definition ( Pandoc(..)
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, Block(..)
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, Inline(..)
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, MetaValue(..)
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, nullMeta
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, docTitle
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, docDate
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, docAuthors
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, lookupMeta
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)
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import Text.Pandoc.Options ( ReaderOptions(..)
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, WriterOptions(..)
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, ObfuscationMethod(..)
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, HTMLMathMethod(..)
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)
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import qualified Text.Pandoc.Readers as Readers
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import Text.Pandoc.Walk (Walkable(..))
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import qualified Text.Pandoc.Writers as Writers
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main :: IO ()
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main = shakeArgs shOpts buildRules
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where
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shOpts =
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shakeOptions
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{ shakeVerbosity = Chatty
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, shakeLintInside = ["\\"]
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}
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-- Configuration
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-- Should probably go in a Reader Monad
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srcDir :: FilePath
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srcDir = "src"
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siteDir :: FilePath
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siteDir = "_site"
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optimDir :: FilePath
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optimDir = "_optim"
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-- BlogPost data structure (a bit of duplication because the metas are in Pandoc)
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data BlogPost =
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BlogPost { postTitle :: T.Text
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, postDate :: T.Text
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, postAuthor :: T.Text
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, postUrl :: FilePath
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, postSrc :: FilePath
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, postTags :: [T.Text]
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, postDescr :: T.Text
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, postToc :: Bool
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, postBody :: Pandoc
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}
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inlineToText :: PandocMonad m => [Inline] -> m T.Text
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inlineToText inline =
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Writers.writeAsciiDoc def (Pandoc nullMeta [Plain inline])
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reformatDate :: Text -> Text
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reformatDate = T.takeWhile (/= ' ') . (T.dropAround dateEnvelope)
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where
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dateEnvelope ' ' = True
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dateEnvelope '\n' = True
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dateEnvelope '\t' = True
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dateEnvelope '[' = True
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dateEnvelope ']' = True
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dateEnvelope _ = False
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getBlogpostFromMetas
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:: (MonadIO m, MonadFail m) => [Char] -> Bool -> Pandoc -> m BlogPost
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getBlogpostFromMetas path toc pandoc@(Pandoc meta _) = do
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eitherBlogpost <- liftIO $ Pandoc.runIO $ do
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title <- fmap (T.dropEnd 1) $ inlineToText $ docTitle meta
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date <- fmap reformatDate $ inlineToText $ docDate meta
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author <- case head $ docAuthors meta of
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Just m -> inlineToText m
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Nothing -> return ""
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let tags = tagsToList $ lookupMeta "keywords" meta
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description = descr $ lookupMeta "description" meta
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url = "/" </> dropDirectory1 path -<.> "org"
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return $ BlogPost title date author url path tags description toc pandoc
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case eitherBlogpost of
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Left _ -> fail "BAD"
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Right bp -> return bp
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where
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tagsToList (Just (MetaList ms)) = map toStr ms
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tagsToList _ = []
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descr (Just (MetaString t)) = t
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descr _ = ""
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toStr (MetaString t) = t
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toStr (MetaInlines inlines) = T.intercalate " " $ map inlineToTxt inlines
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toStr _ = ""
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inlineToTxt (Str t) = t
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inlineToTxt _ = ""
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sortByPostDate :: [BlogPost] -> [BlogPost]
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sortByPostDate =
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sortBy (\a b-> compare (postDate b) (postDate a))
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build :: FilePath -> FilePath
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build = (</>) siteDir
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genAllDeps :: [FilePattern] -> Action [FilePath]
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genAllDeps patterns = do
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allMatchedFiles <- getDirectoryFiles srcDir patterns
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allMatchedFiles &
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filter ((/= "html") . takeExtension) &
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filter (null . takeExtension) &
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map (siteDir </>) &
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return
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buildRules :: Rules ()
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buildRules = do
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cleanRule
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fastRule
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allRule
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fullRule
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getPost <- mkGetPost
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getPosts <- mkGetPosts getPost
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getTemplate <- mkGetTemplate
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build "**" %> \out -> do
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let asset = dropDirectory1 out
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case (takeExtension asset) of
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".html" -> do
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if out == siteDir </> "archive.html"
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then buildArchive getPosts getTemplate out
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else genHtmlAction getPost getTemplate out
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".pdf" -> do
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txtExists <- doesFileExist (srcDir </> asset)
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if txtExists
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then copyFileChanged (srcDir </> asset) out
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else genPdfAction getPost out
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".txt" -> do
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txtExists <- doesFileExist (srcDir </> asset)
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if txtExists
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then copyFileChanged (srcDir </> asset) out
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else genAsciiAction getPost out
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".jpg" -> compressImage asset
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".jpeg" -> compressImage asset
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".gif" -> compressImage asset
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".png" -> compressImage asset
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_ -> copyFileChanged (srcDir </> asset) out
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optimDir </> "rss.xml" %> \_ -> do
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needAll
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command_[] "engine/pre-deploy.sh" []
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buildArchive
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:: (() -> Action [BlogPost])
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-> (FilePath -> Action Template) -> [Char] -> Action ()
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buildArchive getPosts getTemplate out = do
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css <- genAllDeps ["//*.css"]
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posts <- fmap sortByPostDate $ getPosts ()
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need $ css <> map postSrc posts
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let
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title :: Text
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title = "#+title: Posts"
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articleList = toS $ T.intercalate "\n" $ map postInfo posts
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fileContent = title <> "\n\n" <> articleList
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eitherResult <- liftIO $ Pandoc.runIO $ Readers.readOrg (def { readerStandalone = True }) (toS fileContent)
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bp <- case eitherResult of
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Left _ -> fail "BAD"
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Right pandoc -> getBlogpostFromMetas out False pandoc
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innerHtml <- genHtml bp
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template <- getTemplate ("templates" </> "main.mustache")
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let htmlContent =
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renderMustache template
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$ object [ "title" .= postTitle bp
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, "author" .= postAuthor bp
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, "date" .= postDate bp
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, "tags" .= postTags bp
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, "description" .= postDescr bp
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, "body" .= innerHtml
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]
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writeFile' out (toS htmlContent)
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postInfo :: BlogPost -> Text
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postInfo bp =
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"- " <> date <> ": " <> orglink
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where
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date = T.takeWhile (/= ' ') (postDate bp)
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orglink = "[[file:" <> (toS (postUrl bp)) <> "][" <> (postTitle bp) <> "]]"
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replaceLinks :: Pandoc -> Pandoc
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replaceLinks = walk replaceOrgLink
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where
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replaceOrgLink :: Inline -> Inline
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replaceOrgLink lnk@(Link attr inl (url,txt)) =
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if takeExtension (toS url) == ".org"
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then Link attr inl ((toS (toS url -<.> ".html")),txt)
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else lnk
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replaceOrgLink x = x
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orgContentToText :: (MonadIO m, MonadFail m) => Text -> m Text
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orgContentToText org = do
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eitherResult <- liftIO $ Pandoc.runIO $ Readers.readOrg (def { readerStandalone = True }) org
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pandoc <- case eitherResult of
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Left _ -> fail "BAD"
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Right p -> return p
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eitherHtml <- liftIO $ Pandoc.runIO $ Writers.writeHtml5String (def {writerEmailObfuscation = ReferenceObfuscation}) pandoc
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case eitherHtml of
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Left _ -> fail "BAD"
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Right innerHtml -> return innerHtml
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postamble :: (MonadIO m, MonadFail m) => Text -> BlogPost -> m Text
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postamble now bp =
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orgContentToText $ unlines $
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[ "@@html:<footer>@@"
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, "@@html:<i>Any comment? Click on my email below and I'll add it.</i>@@"
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, ""
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, "| author | @@html:<span class=\"author\">@@ [[mailto:Yann Esposito <yann@esposito.host>?subject=yblog: " <> (postTitle bp) <> "][Yann Esposito <yann@esposito.host>]] @@html:</span>@@ |"
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, "| tags | " <> T.intercalate " " (map ("#"<>) (postTags bp)) <> " |"
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, "| date | " <> postDate bp <> " |"
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, "| rss | [[file:/rss.xml][RSS]] ([[https://validator.w3.org/feed/check.cgi?url=https%3A%2F%2Fher.esy.fun%2Frss.xml][validate]]) |"
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, "| size | @@html:<div class=\"web-file-size\">XXK (html XXK, css XXK, img XXK)</div>@@ |"
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, "| gz | @@html:<div class=\"gzweb-file-size\">XXK (html XXK, css XXK, img XXK)</div>@@ |"
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, "| generated | " <> now <> " |"
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, ""
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, "@@html:</footer>@@"
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]
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genHtml :: (MonadIO m, MonadFail m) => BlogPost -> m Text
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genHtml bp = do
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let htmlBody = replaceLinks (postBody bp)
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eitherHtml <- liftIO $
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Pandoc.runIO $
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Writers.writeHtml5String
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(def { writerTableOfContents = postToc bp
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, writerEmailObfuscation = ReferenceObfuscation
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, writerHTMLMathMethod = MathML
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})
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htmlBody
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body <- case eitherHtml of
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Left _ -> fail "BAD"
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Right innerHtml -> return innerHtml
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now <- liftIO Clock.getCurrentTime
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footer <- postamble (toS (iso8601Show now)) bp
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return (body <> footer)
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origin :: Text
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origin = "https://her.esy.fun"
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genHtmlAction
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:: (FilePath -> Action BlogPost)
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-> (FilePath -> Action Template) -> [Char] -> Action ()
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genHtmlAction getPost getTemplate out = do
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let tplname = case takeDirectory1 (dropDirectory1 out) of
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"posts" -> "post.mustache"
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"drafts" -> "post.mustache"
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_ -> "main.mustache"
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template <- getTemplate ("templates" </> tplname)
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let srcFile = srcDir </> (dropDirectory1 (out -<.> "org"))
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liftIO $ putText $ "need: " <> (toS srcFile) <> " -> " <> (toS out)
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need [srcFile]
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bp <- getPost srcFile
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innerHtml <- genHtml bp
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let htmlContent =
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renderMustache template
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$ object [ "title" .= postTitle bp
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, "author" .= postAuthor bp
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, "date" .= postDate bp
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, "tags" .= postTags bp
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, "description" .= postDescr bp
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, "body" .= innerHtml
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, "orgsource" .= T.pack (postUrl bp -<.> "org")
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, "txtsource" .= T.pack (postUrl bp -<.> "txt")
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, "pdf" .= T.pack (postUrl bp -<.> "pdf")
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, "permalink" .= T.pack (toS origin <> postUrl bp)
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]
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writeFile' out (toS htmlContent)
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genAscii :: (MonadIO m, MonadFail m) => BlogPost -> m Text
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genAscii bp = do
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eitherAscii <- liftIO $ Pandoc.runIO $ Writers.writePlain def (postBody bp)
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case eitherAscii of
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Left _ -> fail "BAD"
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Right innerAscii -> return innerAscii
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genAsciiAction
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:: (FilePath -> Action BlogPost)
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-> [Char] -> Action ()
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genAsciiAction getPost out = do
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let srcFile = srcDir </> (dropDirectory1 (out -<.> "org"))
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need [srcFile]
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bp <- getPost srcFile
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innerAscii <- genAscii bp
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let preamble = postTitle bp <> "\n"
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<> T.replicate (T.length (postTitle bp)) "=" <> "\n\n"
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<> postAuthor bp <> "\n"
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<> postDate bp <> "\n"
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<> toS origin <> toS (postUrl bp) <> "\n\n"
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writeFile' out (toS (preamble <> toS innerAscii))
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genPdfAction getPost out = do
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let srcFile = srcDir </> (dropDirectory1 (out -<.> "org"))
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need [srcFile]
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command_ [] "pandoc"
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["--pdf-engine=xelatex"
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, "--resource-path=" <> takeDirectory srcFile
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, srcFile
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, "-H", "engine" </> "deeplist.tex"
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, "-V", "mainfont:Hoefler Text"
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, "-V", "monofont:Menlo"
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, "-V", "monofontoptions:Scale=0.7"
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, "-o", out ]
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allHtmlAction :: Action ()
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allHtmlAction = do
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allOrgFiles <- getDirectoryFiles srcDir ["//*.org"]
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let allHtmlFiles = map (-<.> "html") allOrgFiles
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need (map build allHtmlFiles)
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allPdfAction :: Action ()
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allPdfAction = do
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allOrgFiles <- getDirectoryFiles srcDir ["//*.org"]
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let allHtmlFiles = map (-<.> "pdf") allOrgFiles
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need (map build allHtmlFiles)
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allAsciiAction :: Action ()
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allAsciiAction = do
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allOrgFiles <- getDirectoryFiles srcDir ["//*.org"]
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let allAsciiFiles = map (-<.> "txt") allOrgFiles
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need (map build allAsciiFiles)
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compressImage :: FilePath -> Action ()
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compressImage img = do
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let src = srcDir </> img
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dst = siteDir </> img
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need [src]
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let dir = takeDirectory dst
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dirExists <- doesDirectoryExist dir
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when (not dirExists) $
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command [] "mkdir" ["-p", dir]
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command_ [] "convert" [ src
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, "-strip"
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, "-resize","320x320>"
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, "-interlace","Plane"
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, "-quality","85"
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, "-define","filter:blur=0.75"
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, "-filter","Gaussian"
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, "-ordered-dither","o4x4,4"
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, dst ]
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needFast = do
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allAssets <- filter (/= ".DS_Store") <$> getDirectoryFiles srcDir ["**"]
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need (map build $ allAssets <> ["archive.html"])
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allHtmlAction
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fastRule :: Rules ()
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fastRule =
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withTargetDocs "generate html" $
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phony "fast" $
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needFast
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needAll = do
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needFast
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allAsciiAction
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allPdfAction
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allRule :: Rules ()
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allRule =
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withTargetDocs "generate all, no optim" $
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phony "all" $
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needAll
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fullRule :: Rules ()
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fullRule =
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withTargetDocs "generate all and optim" $
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phony "full" $
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need [optimDir </> "rss.xml"]
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cleanRule :: Rules ()
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cleanRule =
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phony "clean" $ do
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putInfo "Cleaning files in _site and _optim"
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forM_ [siteDir,optimDir] $ flip removeFilesAfter ["**"]
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mkGetTemplate :: Rules (FilePath -> Action Template)
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mkGetTemplate = newCache $ \path -> do
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fileContent <- readFile' path
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let res = compileMustacheText "page" (toS fileContent)
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case res of
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Left _ -> fail "BAD"
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Right template -> return template
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tocRequested :: Text -> Bool
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tocRequested fc =
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let toc = fc & T.lines
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& map T.toLower
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& filter (T.isPrefixOf (T.pack "#+options: "))
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& head
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& fmap (filter (T.isPrefixOf (T.pack "toc:")) . T.words)
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in toc == Just ["toc:t"]
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mkGetPost :: Rules (FilePath -> Action BlogPost)
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mkGetPost = newCache $ \path -> do
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fileContent <- readFile' path
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let toc = tocRequested (toS fileContent)
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eitherResult <- liftIO $ Pandoc.runIO $ Readers.readOrg (def { readerStandalone = True }) (toS fileContent)
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case eitherResult of
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Left _ -> fail "BAD"
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Right pandoc -> getBlogpostFromMetas path toc pandoc
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mkGetPosts :: (FilePath -> Action b) -> Rules (() -> Action [b])
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mkGetPosts getPost =
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newCache $ \() -> mapM getPost =<< getDirectoryFiles "" ["src/posts//*.org"]
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