424 lines
18 KiB
Haskell
424 lines
18 KiB
Haskell
---------------------------------------------------------------------------------------------------------
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{-# LANGUAGE OverloadedStrings, TupleSections, FlexibleContexts #-}
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---------------------------------------------------------------------------------------------------------
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-- (C) Copyright Collin Doering 2013
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--
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-- This program is free software: you can redistribute it and/or modify
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-- it under the terms of the GNU General Public License as published by
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-- the Free Software Foundation, either version 3 of the License, or
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-- (at your option) any later version.
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--
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-- This program is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU General Public License for more details.
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--
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-- You should have received a copy of the GNU General Public License
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-- along with this program. If not, see <http://www.gnu.org/licenses/>.
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-- File: site.hs
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-- Author: Collin J. Doering <rekahsoft@gmail.com>
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-- Date: Oct 11, 2013
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-- Description: The static site generator for my personal technical blog
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---------------------------------------------------------------------------------------------------------
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import Hakyll
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import Control.Monad
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import Data.Monoid (mconcat,(<>))
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import Data.List (sortBy)
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import Data.Map (toList)
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import Data.Ord (comparing)
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import System.Random
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import System.FilePath (takeBaseName)
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import System.Process
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import System.Exit
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import System.IO (hGetContents)
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import Text.Parsec
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import Text.Pandoc.Options
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import Control.Applicative()
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---------------------------------------------------------------------------------------------------------
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pandocReaderOptions :: ReaderOptions
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pandocReaderOptions = def
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{ readerExtensions = extensionsFromList
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[ Ext_footnotes
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, Ext_inline_notes
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, Ext_pandoc_title_block
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, Ext_yaml_metadata_block
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, Ext_table_captions
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, Ext_implicit_figures
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, Ext_simple_tables
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, Ext_multiline_tables
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, Ext_grid_tables
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, Ext_pipe_tables
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, Ext_citations
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, Ext_raw_tex
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, Ext_raw_html
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, Ext_tex_math_dollars
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, Ext_latex_macros
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, Ext_fenced_code_blocks
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, Ext_fenced_code_attributes
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, Ext_backtick_code_blocks
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, Ext_inline_code_attributes
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, Ext_markdown_in_html_blocks
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, Ext_escaped_line_breaks
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, Ext_fancy_lists
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, Ext_startnum
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, Ext_definition_lists
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, Ext_example_lists
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, Ext_all_symbols_escapable
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, Ext_intraword_underscores
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, Ext_blank_before_blockquote
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, Ext_blank_before_header
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, Ext_strikeout
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, Ext_superscript
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, Ext_subscript
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, Ext_auto_identifiers
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, Ext_header_attributes
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, Ext_implicit_header_references
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, Ext_line_blocks ]
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}
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pandocWriterOptions :: WriterOptions
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pandocWriterOptions = defaultHakyllWriterOptions
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{ writerHTMLMathMethod = MathJax ""
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, writerEmailObfuscation = NoObfuscation -- ReferenceObfuscation
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}
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myConfig :: Configuration
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myConfig = defaultConfiguration
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{ deployCommand = "echo 'Deploying website...' && " ++
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"aws s3 sync _site/ s3://$S3_BUCKET &&" ++
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"echo 'Done!'"
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, previewPort = 3000
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}
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main :: IO ()
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main = do
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-- Get a random number generator before going into Rules monad
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stdGen <- getStdGen
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hakyllWith myConfig $ do
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match ("action/**" .||. "files/**" .||. "images/**" .||. "fonts/**" .||. "robots.txt") $ do
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route idRoute
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compile copyFileCompiler
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match "css/**" $ do
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route idRoute
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compile compressCssCompiler
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match "lib/Skeleton/*.css" $ do
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route $ gsubRoute "Skeleton" (const "css")
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compile compressCssCompiler
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match "templates/**" $ compile $ getResourceBody >>= saveSnapshot "original"
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>> templateCompiler
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-- Generate tags
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tags <- buildTags ("posts/**" .&&. hasNoVersion) (fromCapture "tags/*1.html")
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-- Generate paginate
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paginatedPosts <- buildPaginateWith
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(fmap (paginateEvery numPaginatePages) . sortRecentFirst)
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("posts/**" .&&. hasNoVersion)
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(\n -> fromCapture "blog*.html" (show n))
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pageIds <- getMatches ("pages/**" .&&. complement "pages/blog.markdown")
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fontIds <- getMatches "fonts/**"
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imageIds <- getMatches "images/**"
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cssIds <- getMatches "css/**"
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jsIds <- getMatches "js/**"
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libIds <- getMatches "lib/**"
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clayIds <- getMatches "clay/**.hs"
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let manifestIds = clayIds ++ fontIds ++ imageIds ++ pageIds ++ cssIds ++ libIds ++ jsIds
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clayDeps <- makePatternDependency $ fromList clayIds
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manifestDeps <- makePatternDependency $ fromList manifestIds
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rulesExtraDependencies [clayDeps] $ create ["default.css"] $ do
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route idRoute
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compile $ makeItem =<< (unsafeCompiler $ do
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(_, hout, _, ph) <- createProcess $ shell "stack build blog-rekahsoft-ca:gencss"
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exitCode <- waitForProcess ph
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if exitCode == ExitSuccess
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then readProcess "stack" ["exec", "gencss", "--", "compact"] ""
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else case hout of
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Nothing -> fail "Error running 'stack build blog-rekahsoft-ca:gencss'"
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Just hout' -> hGetContents hout' >>= fail)
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rulesExtraDependencies [manifestDeps] $ create ["manifest.appcache"] $ do
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route idRoute
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compile $ do
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manifestCacheRoutesMaybe <- sequence $ liftM getRoute (fontIds ++ pageIds ++ imageIds ++ cssIds ++ libIds ++ jsIds)
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let randomNum = random stdGen :: (Int, StdGen)
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randomStr = show . abs . fst $ randomNum
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manifestStart = [ "CACHE MANIFEST"
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, "# " ++ randomStr ]
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manifestCacheSingles = [ "/default.css" ]
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paginatedPostsCache = take 2 $ map (\(n,_) -> "/blog" ++ (show n) ++ ".html") $ toList $ paginateMap paginatedPosts
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tagsCache = concatMap (\(t,ids) -> take 2 $ ["/tags/" ++ t ++ show n ++ ".html" | n <- [1..length $ paginateEvery numPaginatePages ids]]) $ tagsMap tags
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manifestCacheFromIds = filter (not . null) $ fmap (maybe "" ("/"++)) manifestCacheRoutesMaybe
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manifestCache = manifestCacheFromIds ++ tagsCache ++ paginatedPostsCache
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manifestNetwork = [ "NETWORK:"
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, "*"
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, "http://*"
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, "https://*" ]
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makeItem . unlines $ manifestStart ++ [""] ++
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manifestCacheSingles ++ manifestCache ++ [""] ++
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manifestNetwork ++ [""]
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match "css/**" $ do
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route idRoute
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compile compressCssCompiler
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match "lib/Skeleton/*.css" $ do
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route $ gsubRoute "Skeleton" (const "css")
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compile compressCssCompiler
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match "templates/**" $ compile $ getResourceBody >>= saveSnapshot "original"
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>> templateCompiler
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-- Generate tag pages
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forM_ (tagsMap tags) $ \(tag, identifiers) -> do
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paginatedTaggedPosts <- buildPaginateWith
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(fmap (paginateEvery numPaginatePages) . sortRecentFirst)
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(fromList identifiers)
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(\n -> fromCapture (fromGlob $ "tags/" ++ tag ++ "*.html") (show n))
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paginateRules paginatedTaggedPosts $ \pageNum pattern -> do
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route $ gsubRoute " " (const "-") `composeRoutes` setExtension "html"
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compile $ do
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posts <- recentFirst =<< loadAllSnapshots pattern "content"
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navCtx <- genNavContext "pages/blog.markdown"
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let ctx = taggedPostCtx tags <>
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paginateContext paginatedTaggedPosts pageNum <>
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constField "tag" tag <>
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listField "posts" (taggedPostCtx tags) (return posts)
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indexCtx = if pageNum <= 2
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then appCacheCtx <> navCtx
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else navCtx
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makeItem ""
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>>= loadAndApplyTemplate "templates/tag-page.html" ctx
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>>= loadAndApplyTemplate "templates/default.html" indexCtx
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rulesExtraDependencies [tagsDependency tags] $ do
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create [fromFilePath $ "tags/" ++ tag ++ ".xml"] $ do
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route $ gsubRoute " " (const "-") `composeRoutes` setExtension "xml"
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compile $ loadAllSnapshots (fromList identifiers) "content"
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>>= fmap (take 10) . recentFirst
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>>= renderAtom (feedConfiguration $ Just tag) (bodyField "description" <> defaultContext)
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let pageRoute = gsubRoute "pages/" (const "") `composeRoutes` setExtension "html"
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match ("pages/*" .&&. complement "pages/blog.markdown") $ version "nav-gen" $ do
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route $ pageRoute
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compile $ pandocCompiler
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match "pages/blog.markdown" $ version "nav-gen" $ do
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route $ constRoute "blog1.html"
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compile $ pandocCompiler
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paginateRules paginatedPosts $ \pageNum pattern -> do
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route idRoute
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compile $ do
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posts <- recentFirst =<< loadAllSnapshots pattern "content"
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navCtx <- genNavContext "pages/blog.markdown"
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let ctx = taggedPostCtx tags <>
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paginateContext paginatedPosts pageNum <>
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listField "posts" (taggedPostCtx tags) (return posts)
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indexCtx = if pageNum <= 2
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then appCacheCtx <> navCtx
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else navCtx
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makeItem ""
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>>= loadAndApplyTemplate "templates/pages/blog.html" ctx
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>>= loadAndApplyTemplate "templates/default.html" indexCtx
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match ("pages/*" .&&. complement "pages/blog.markdown") $ do
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route $ pageRoute
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compile $ do
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posts <- recentFirst =<< loadAllSnapshots "posts/**" "content"
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-- Get the current Identifier
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curId <- getUnderlying
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let pageFilePath = toFilePath curId
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pageName = takeBaseName pageFilePath
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recentPosts = take 5 posts
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pageTemplate = "templates/pages/" ++ pageName ++ ".html"
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-- Generate navigation context
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navCtx <- genNavContext pageFilePath
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let masterCtx =
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listField "recentPosts" (taggedPostCtx tags) (return recentPosts) <>
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listField "posts" (taggedPostCtx tags) (return posts) <>
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tagCloudField "tagCloud" 65 135 tags <>
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defaultContext
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indexCtx = navCtx <> appCacheCtx
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sectionCtx <- getResourceBody >>= genSectionContext
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pg <- loadSnapshot (fromFilePath pageTemplate) "original"
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>>= applyAsTemplate (sectionCtx <> masterCtx)
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(makeItem . itemBody) pg
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>>= loadAndApplyTemplate "templates/default.html" indexCtx
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match "posts/**" $ do
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route $ setExtension "html"
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compile $ do
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indexCtx <- genNavContext "pages/blog.markdown"
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pandocCompilerWith pandocReaderOptions pandocWriterOptions
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>>= saveSnapshot "content"
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>>= loadAndApplyTemplate "templates/partials/post.html" (taggedPostCtx tags)
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>>= loadAndApplyTemplate "templates/default.html" indexCtx
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create ["atom.xml"] $ do
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route idRoute
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compile $ do
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let feedCtx = postCtx <> bodyField "description"
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blogPosts <- loadAllSnapshots ("posts/**" .&&. hasNoVersion) "content"
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>>= fmap (take 10) . recentFirst
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renderAtom (feedConfiguration Nothing) feedCtx blogPosts
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forM_ [("js/**", idRoute),
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("lib/JQuery/*", gsubRoute "JQuery" $ const "js")] $ \(p, r) ->
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match p $ do
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route r
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compile $ compressCssCompiler
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---------------------------------------------------------------------------------------------------------
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-- Functions & Constants --------------------------------------------------------------------------------
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feedConfiguration :: Maybe String -> FeedConfiguration
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feedConfiguration title = FeedConfiguration
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{ feedTitle = title'
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, feedDescription = "My encounters with math, programming, science and the world!"
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, feedAuthorName = "Collin J. Doering"
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, feedAuthorEmail = "collin.doering@rekahsoft.ca"
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, feedRoot = "http://blog.rekahsoft.ca"
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} where title' = maybe defaultTitle ((defaultTitle ++ "; Specifically on the topic of ") ++) title
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defaultTitle = "Technical Musings of a Minimalist"
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genNavContext :: String -> Compiler (Context String)
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genNavContext ident = do
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pages <- sortByM pageWeight =<< loadAll ("pages/*" .&&. hasVersion "nav-gen")
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let (pagesFirst, pagesLast') = flip span pages $ \x ->
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(toFilePath . itemIdentifier $ x) /= ident
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pageMid = [head pagesLast']
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pagesLast = if not . null $ pagesLast' then tail pagesLast' else []
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indexCtx = listField "pagesFirst" defaultContext (return pagesFirst) <>
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listField "pageMid" defaultContext (return pageMid) <>
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listField "pagesLast" defaultContext (return pagesLast) <>
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defaultContext
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return indexCtx
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numPaginatePages :: Int
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numPaginatePages = 6
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postCtx :: Context String
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postCtx = dateField "date" "%B %e, %Y" <>
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teaserField "teaser" "content" <>
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defaultContext
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taggedPostCtx :: Tags -> Context String
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taggedPostCtx tags = tagsField "tags" tags <> postCtx
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appCacheCtx :: Context String
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appCacheCtx = constField "appcache" "true"
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pageWeight :: (Functor f, MonadMetadata f) => Item a -> f Int
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pageWeight i = fmap (maybe 0 read) $ getMetadataField (itemIdentifier i) "weight"
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sortByM :: (Monad m, Ord k) => (a -> m k) -> [a] -> m [a]
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sortByM f xs = liftM (map fst . sortBy (comparing snd)) $
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mapM (\x -> liftM (x,) (f x)) xs
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---------------------------------------------------------------------------------------------------------
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-- Page section parser
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---------------------------------------------------------------------------------------------------------
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genSectionContext :: Item String -> Compiler (Context a)
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genSectionContext = fmap mconcat . sequence . map makeField . unSections . readSections . itemBody
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where makeField (k, b) = constField k . itemBody <$> (makeItem b >>= readPandocWith pandocReaderOptions >>= return . writePandocWith pandocWriterOptions)
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readSections :: String -> [Section String String]
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readSections s = case parse sections "" s of
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Left err -> error $ "Cannot parse sections: " ++ show err
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Right t -> t
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data Section k a = NonSection a
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| Section k a
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| GlobalSection a
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deriving (Eq, Show)
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instance Functor (Section k) where
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fmap f (NonSection b) = NonSection $ f b
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fmap f (Section k b) = Section k (f b)
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fmap f (GlobalSection b) = GlobalSection $ f b
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unSections :: [Section String String] -> [(String, String)]
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unSections = snd . foldr unSection (0, []) . filter (not . isGlobalSection) . applyGlobalSections
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where unSection :: Section String String -> (Integer, [(String, String)]) -> (Integer, [(String, String)])
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unSection (NonSection b) (n, ys) = (n + 1, ("body" ++ show n, b) : ys)
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unSection (Section k b) (n, ys) = (n, (k, b) : ys)
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unSection (GlobalSection _) _ = error "Internal error! This should never happen!"
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isGlobalSection :: Section k a -> Bool
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isGlobalSection (GlobalSection _) = True
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isGlobalSection _ = False
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applyGlobalSections :: [Section k String] -> [Section k String]
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applyGlobalSections xs = flip map xs $ fmap $ trim . (++globalSectionBody)
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where globalSectionBody = let gs = foldr unGlobalSection [] xs in
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if null gs then gs else "\n" ++ gs
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unGlobalSection (GlobalSection b) ys
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| null ys = b
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| otherwise = b ++ "\n" ++ ys
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unGlobalSection _ ys = ys
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-- **TODO** parser has error with escapes within pages; that is $$someExample$$ and $$section("example")$$
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sections :: Parsec String a [Section String String]
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sections = many (section <|> globalSection <|> nonSection)
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section :: Parsec String a (Section String String)
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section = do
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key <- sectionStart
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body <- sectionBody
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void $ sectionEnd
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return $ Section key body
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sectionStart :: Parsec String a String
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sectionStart = between (try $ string "$section(") (string ")$") sectionId
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sectionId :: Parsec String a String
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sectionId = between (char '"') (char '"') (many1 (noneOf "\""))
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sectionEnd :: Parsec String a String
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sectionEnd = string "$endsection$"
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sectionBody :: Parsec String a String
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sectionBody = try escapedDollar <|> many1 (noneOf "$")
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escapedDollar :: Parsec String a String
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escapedDollar = try (between (char '$') (char '$')
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(try ((sectionStart >>= (\s -> return $ "$section(\"" ++ s ++ "\")$")) <|>
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sectionEnd <|> string "$section$"))) <|>
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try sectionEnd <|>
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(string "$$" *> return "$")
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globalSection :: Parsec String a (Section k String)
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globalSection = GlobalSection <$> between (string "$section$") sectionEnd sectionBody
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nonSection :: Parsec String a (Section k String)
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nonSection = many1 (many1 (noneOf "$") <|> try escapedDollar) >>= return . NonSection . concat
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