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blog-rekahsoft-ca
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blog-rekahsoft-ca/site.hs

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---------------------------------------------------------------------------------------------------------
{-# LANGUAGE OverloadedStrings, TupleSections #-}
---------------------------------------------------------------------------------------------------------
-- (C) Copyright Collin Doering 2013
--
-- This program is free software: you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation, either version 3 of the License, or
-- (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
-- File: site.hs
-- Author: Collin J. Doering <rekahsoft@gmail.com>
-- Date: Oct 11, 2013
-- Description: The website for RekahSoft
---------------------------------------------------------------------------------------------------------
import Hakyll
import Control.Monad
import Data.Char (chr)
import Data.Monoid (mappend,mconcat,(<>))
import Data.Maybe (maybeToList)
import Data.List (sortBy,intercalate)
import Data.Ord (comparing)
import Data.Functor ((<$>))
import Data.Time.Format (parseTime)
import System.Locale (defaultTimeLocale)
import Data.Time.Clock (UTCTime)
import System.Random
import System.FilePath (takeBaseName,takeFileName,(</>))
import System.FilePath.Posix (takeBaseName)
import Text.Parsec
import Control.Applicative hiding ((<|>),many)
---------------------------------------------------------------------------------------------------------
myConfig :: Configuration
myConfig = defaultConfiguration
{ deployCommand = "rsync -rpogtzc --delete -e ssh _site/ collin@rekahsoft.ca:~/public_html/blog/"
, previewPort = 3000
}
feedConfig :: FeedConfiguration
feedConfig = feedConfiguration Nothing
main :: IO ()
main = do
-- Get a random number generator before going into Rules monad
stdGen <- getStdGen
hakyllWith myConfig $ do
-- All Versions ------------------------------------------------------------------------------------------
match "action/**" $ do
route idRoute
compile copyFileCompiler
pageIds <- getMatches "pages/**"
fontIds <- getMatches "fonts/**"
imageIds <- getMatches "images/**"
cssIds <- getMatches "css/**"
jsIds <- getMatches "js/**"
libIds <- getMatches "lib/**"
allSassIds <- getMatches "sass/**"
let sassIds = filter (`notElem` badIds) allSassIds
badIds = filterMatches (fromRegex "^sass/bourbon/.*$|^sass/default.s[ac]ss$") allSassIds
manifestIds = sassIds ++ fontIds ++ imageIds ++ pageIds ++ cssIds ++ libIds ++ jsIds
sassDeps <- makePatternDependency $ fromList sassIds
manifestDeps <- makePatternDependency $ fromList manifestIds
rulesExtraDependencies [sassDeps] $ match (fromRegex "^sass/default.s[ac]ss$") $ do
route $ gsubRoute "sass/" (const "") `composeRoutes` setExtension "css"
compile $ getResourceBody
>>= saveSnapshot "original"
>>= withItemBody (fmap compressCss . unixFilter "sass" [])
rulesExtraDependencies [manifestDeps] $ create ["manifest.appcache"] $ do
route idRoute
compile $ do
manifestCacheRoutesMaybe <- sequence $ liftM getRoute (fontIds ++ pageIds ++ imageIds ++ cssIds ++ libIds ++ jsIds)
let randomNum = random stdGen :: (Int, StdGen)
randomStr = show $ fst $ randomNum
manifestStart = unlines [ "CACHE MANIFEST"
, "# " ++ randomStr
, "" ]
manifestCacheSingles = unlines [ "/index.html"
, "/default.css" ]
manifestCache = unlines $ filter (not . null) $ fmap (maybe "" ("/"++)) manifestCacheRoutesMaybe
manifestFallback = unlines [""
, "FALLBACK:"
, "/posts/ /post-offline.html"
, "/tags/ /tags-offline.html"
, "" ]
manifestNetwork = unlines [ "NETWORK:"
, "*"
, "" ]
makeItem $ manifestStart ++ manifestCacheSingles ++ manifestCache ++ manifestFallback ++ manifestNetwork
-- TODO: This needs to be more robust
match "*-offline.html" $ do
route idRoute
compile copyFileCompiler
match "css/**" $ do
route idRoute
compile compressCssCompiler
match "lib/Skeleton/*.css" $ do
route $ gsubRoute "Skeleton" (const "css")
compile compressCssCompiler
forM_ [ ("images/**", idRoute)
, ("fonts/**", idRoute) ] $ \(p, r) ->
match p $ do
route r
compile copyFileCompiler
match "templates/**.haml" $ compile $ getResourceBody >>= saveSnapshot "original"
>>= withItemBody (fmap readTemplate . unixFilter "haml" [])
---------------------------------------------------------------------------------------------------------
-- Default Version --------------------------------------------------------------------------------------
tags <- buildTags ("posts/**" .&&. hasNoVersion) (fromCapture "tags/*.html")
tagsRules tags $ genTagRules tags
-- paginatedPosts <- buildPaginateWith 3 (\n -> fromFilePath $ "blog/page" ++ show n ++ ".html") ("posts/**" .&&. hasNoVersion)
-- paginatedPosts <- buildPaginate ("posts/**" .&&. hasNoVersion)
-- paginateRules paginatedPosts (genPaginateRules tags paginatedPosts)
-- paginate 3 $ \index maxIndex itemsForPage -> do
-- let id = fromFilePath $ "blog/page" ++ show index ++ ".html"
-- create [id] $ do
-- route idRoute
-- compile $ do
-- -- items <- sequence $ map loadTeaser itemsForPage
-- -- let itemBodies = map itemBody items
-- -- postCtx = defaultContext -- TODO
-- makeItem ""
-- >>= saveSnapshot "content"
-- >>= loadAndApplyTemplate "templates/pages/blog.haml" (taggedPostCtx tags)
match "pages/*" $ do
route $ setExtension "html"
compile $ do
-- Get the current page name
pageName <- takeBaseName . toFilePath <$> getUnderlying
posts <- recentFirst =<< loadAllSnapshots ("posts/**" .&&. hasNoVersion) "content"
let recentPosts = take 5 posts
pageTemplate = "templates/pages/" ++ pageName ++ ".haml"
masterCtx = listField "recentPosts" (taggedPostCtx tags) (return recentPosts) <>
listField "posts" (taggedPostCtx tags) (return posts) <>
-- paginateContext paginatedPosts <>
tagCloudField "tagCloud" 65 135 tags <>
defaultContext
sectionCtx <- getResourceBody >>= genSectionContext
pg <- loadSnapshot (fromFilePath pageTemplate) "original"
>>= withItemBody (unixFilter "haml" [])
>>= applyAsTemplate (sectionCtx <> masterCtx)
makeItem . itemBody $ pg
-- TODO: add "next" and "previous" while processing templates/partials/post.haml
match "posts/**" $ do
route $ setExtension "html"
compile $ pandocCompiler
>>= saveSnapshot "content"
>>= loadAndApplyTemplate "templates/partials/post.haml" (taggedPostCtx tags)
-- >>= relativizeUrls
create ["atom.xml"] $ do
route idRoute
compile $ do
let feedCtx = postCtx <> bodyField "description"
blogPosts <- loadAllSnapshots ("posts/**" .&&. hasNoVersion) "content"
>>= fmap (take 10) . recentFirst
renderAtom feedConfig feedCtx blogPosts
forM_ [("js/**", idRoute),
("lib/JQuery/*", gsubRoute "JQuery" $ const "js"),
("lib/jquery-address/src/jquery.address.js",
customRoute $ const "lib/js/jquery.address.js")] $ \(p, r) ->
match p $ do
route r
compile $ getResourceString >>= withItemBody (unixFilter "jsmin" [])
match "index.html" $ do
route idRoute
compile $ do
-- Generate nav-bar from pages/* ordered by metadata 'weight'
pages <- sortByM pageWeight =<< loadAll ("pages/*" .&&. hasNoVersion)
let indexCtx = listField "pages" pagesCtx (return pages) <> defaultContext
getResourceBody
>>= applyAsTemplate indexCtx
>>= loadAndApplyTemplate "templates/default.haml" indexCtx
>>= relativizeUrls
---------------------------------------------------------------------------------------------------------
-- NOJS Version -----------------------------------------------------------------------------------------
-- -- tagsNoJs <- buildTags ("posts/**" .&&. hasVersion "nojs") (fromCapture "nojs/tags/*.html")
-- -- tagsRules tagsNoJs $ genTagRules tagsNoJs
-- create ["nojs/atom.xml"] $ do
-- route idRoute
-- compile $ do
-- let feedCtx = postCtx <> bodyField "description"
-- blogPosts <- loadAllSnapshots ("posts/**" .&&. hasVersion "nojs") "content"
-- >>= fmap (take 10) . recentFirst
-- renderAtom feedConfig feedCtx blogPosts
-- create ["nojs/archive.html"] $ do
-- route idRoute
-- compile $ do
-- -- Load all blog posts for archive
-- posts <- recentFirst =<< loadAllSnapshots ("posts/*" .&&. hasVersion "nojs") "content"
-- -- Generate nav-bar from pages/*
-- pages <- sortByM pageWeight =<< loadAll ("pages/*" .&&. hasVersion "nav-gen")
-- let archiveCtx =
-- listField "posts" postCtx (return posts) <>
-- constField "title" "Archives" <>
-- defaultContext
-- indexCtx =
-- listField "pagesFirst" pagesCtx (return pages) <>
-- listField "pagesLast" pagesCtx (return []) <>
-- defaultContext
-- makeItem ""
-- >>= loadAndApplyTemplate "templates/archive.haml" archiveCtx
-- >>= loadAndApplyTemplate "templates/default-nojs.haml" indexCtx
-- >>= relativizeUrls
-- match "posts/**" $ version "nojs" $ do
-- route $ customRoute (\r -> "nojs" </> toFilePath r) `composeRoutes` setExtension "html"
-- compile $ do
-- -- Generate nav-bar from pages/*
-- pages <- sortByM pageWeight =<< loadAll ("pages/*" .&&. hasVersion "nav-gen")
-- -- Get the current Identifier
-- curId <- getUnderlying
-- let (pagesFirst, pagesLast') = flip span pages $ \x ->
-- toFilePath curId /= (toFilePath . itemIdentifier $ x)
-- pagesLast = if not . null $ pagesLast' then tail pagesLast' else []
-- postNojsCtx =
-- listField "pagesFirst" pagesCtx (return pagesFirst) <>
-- listField "pagesLast" pagesCtx (return pagesLast) <>
-- defaultContext
-- pandocCompiler
-- >>= saveSnapshot "content"
-- >>= loadAndApplyTemplate "templates/partials/post-nojs.haml" postCtx
-- >>= loadAndApplyTemplate "templates/default-nojs.haml" postNojsCtx
-- >>= relativizeUrls
-- -- This route is used for the initial pass of the pages (nav-gen) and the final nojs page output
-- let pagesNoJsRoute = customRoute (\r -> if toFilePath r == "pages/home.markdown"
-- then "pages/index.markdown"
-- else toFilePath r) `composeRoutes`
-- gsubRoute "pages" (const "nojs") `composeRoutes`
-- setExtension "html"
-- match "pages/*" $ version "nav-gen" $ do
-- route $ pagesNoJsRoute
-- compile $ pandocCompiler
-- >>= loadAndApplyTemplate "templates/page.haml" defaultContext
-- match "pages/*" $ version "nojs" $ do
-- route $ pagesNoJsRoute
-- compile $ do
-- -- Show a slideshow of blog posts using js..limit to the 3 most recent posts
-- recentPosts <- loadAllSnapshots ("posts/**" .&&. hasVersion "nojs") "content"
-- >>= fmap (take 3) . recentFirst
-- -- Generate nav-bar from pages/*
-- pages <- sortByM pageWeight =<< loadAll ("pages/*" .&&. hasVersion "nav-gen")
-- -- Get the current Identifier
-- curId <- getUnderlying
-- let (pagesFirst, pagesLast') = flip span pages $ \x ->
-- toFilePath curId /= (toFilePath . itemIdentifier $ x)
-- pageMid = head pagesLast'
-- pagesLast = if not . null $ pagesLast' then tail pagesLast' else []
-- pagesNojsCtx =
-- listField "recentPosts" postCtx (return recentPosts) <>
-- listField "pagesFirst" pagesCtx (return pagesFirst) <>
-- field "pageMid" (const $ return . itemBody $ pageMid) <>
-- listField "pagesLast" pagesCtx (return pagesLast) <>
-- defaultContext
-- loadVersion "nav-gen" curId
-- >>= loadAndApplyTemplate "templates/default-nojs.haml" pagesNojsCtx
-- >>= relativizeUrls
---------------------------------------------------------------------------------------------------------
-- Functions & Constants --------------------------------------------------------------------------------
feedConfiguration :: Maybe String -> FeedConfiguration
feedConfiguration title = FeedConfiguration
{ feedTitle = title'
, feedDescription = "My encounters with math, programming, science and the world!"
, feedAuthorName = "Collin J. Doering"
, feedAuthorEmail = "support@rekahsoft.ca"
, feedRoot = "http://blog.rekahsoft.ca"
} where title' = maybe defaultTitle ((defaultTitle ++ "; Specifically on the topic of ") ++) title
defaultTitle = "Technical Musings of a Minimalist"
genTagRules :: Tags -> String -> Pattern -> Rules ()
genTagRules tags tag pattern = do
route $ gsubRoute " " (const "-")
compile $ do
posts <- recentFirst =<< loadAllSnapshots pattern "content"
let tagPageCtx = listField "posts" (taggedPostCtx tags) (return posts) <>
tagCloudField "tagCloud" 65 135 tags <>
constField "tag" tag
makeItem ""
>>= loadAndApplyTemplate "templates/tag-page.haml" tagPageCtx
version "rss" $ do
route $ gsubRoute " " (const "-") `composeRoutes` setExtension "xml"
compile $ loadAllSnapshots pattern "content"
>>= fmap (take 10) . recentFirst
>>= renderAtom (feedConfiguration $ Just tag) (bodyField "description" <> defaultContext)
genPaginateRules :: Tags -> Paginate -> PageNumber -> Pattern -> Rules ()
genPaginateRules tags paginate n pattern = do
route idRoute
compile $ pandocCompiler
>>= loadAndApplyTemplate "templates/partials/post.haml" (taggedPostCtx tags <> paginateContext paginate)
-- >>= loadAndApplyTemplate "templates/page.haml" defaultContext
-- >>= relativizeUrls
-- | Split list into equal sized sublists.
-- https://github.com/ian-ross/blog
chunk :: Int -> [a] -> [[a]]
chunk n [] = []
chunk n xs = ys : chunk n zs
where (ys,zs) = splitAt n xs
paginate:: Int -> (Int -> Int -> [Identifier] -> Rules ()) -> Rules ()
paginate itemsPerPage rules = do
identifiers <- getMatches "posts/*"
let sorted = sortBy (flip byDate) identifiers
chunks = chunk itemsPerPage sorted
maxIndex = length chunks
pageNumbers = take maxIndex [1..]
process i is = rules i maxIndex is
zipWithM_ process pageNumbers chunks
where
byDate id1 id2 =
let fn1 = takeFileName $ toFilePath id1
fn2 = takeFileName $ toFilePath id2
parseTime' fn = parseTime defaultTimeLocale "%Y-%m-%d" $ intercalate "-" $ take 3 $ splitAll "-" fn
in compare (parseTime' fn1 :: Maybe UTCTime) (parseTime' fn2 :: Maybe UTCTime)
loadVersion :: String -> Identifier -> Compiler (Item String)
loadVersion v i = load (setVersion (listAsMaybe v) i) >>= makeItem . itemBody
where listAsMaybe [] = Nothing
listAsMaybe xs = Just xs
postCtx :: Context String
postCtx = dateField "date" "%B %e, %Y" <>
teaserField "teaser" "content" <>
field "virtualpath" (fmap (maybe "" toUrl) . getRoute . itemIdentifier) <>
defaultContext
taggedPostCtx :: Tags -> Context String
taggedPostCtx tags = tagsField "tags" tags <> postCtx
pagesCtx :: Context String
pagesCtx = field "virtualpath" (fmap (drop 6 . maybe "" toUrl) . getRoute . itemIdentifier) <>
defaultContext
pageWeight :: (Functor f, MonadMetadata f) => Item a -> f Int
pageWeight i = fmap (maybe 0 read) $ getMetadataField (itemIdentifier i) "weight"
sortByM :: (Monad m, Ord k) => (a -> m k) -> [a] -> m [a]
sortByM f xs = liftM (map fst . sortBy (comparing snd)) $
mapM (\x -> liftM (x,) (f x)) xs
---------------------------------------------------------------------------------------------------------
-- WORKING PROGRESS
---------------------------------------------------------------------------------------------------------
--genSectionContext :: Item String -> Compiler (Context String)
genSectionContext = fmap mconcat . sequence . map makeField . unSections . readSections . itemBody
where makeField (k, b) = constField k . itemBody <$> (makeItem b >>= return . writePandoc . readPandoc)
--readSections :: String -> Compiler (Context String)
readSections :: String -> [Section String String]
readSections s = case parse sections "" s of
Left err -> error $ "Cannot parse sections: " ++ show err
Right t -> t
data Section k a = NonSection a
| Section k a
| GlobalSection a
deriving (Eq, Show)
instance Functor (Section k) where
fmap f (NonSection b) = NonSection $ f b
fmap f (Section k b) = Section k (f b)
fmap f (GlobalSection b) = GlobalSection $ f b
unSections :: [Section String String] -> [(String, String)]
unSections = snd . foldr unSection (0, []) . filter (not . isGlobalSection) . applyGlobalSections
where unSection (NonSection b) (n, ys) = (n + 1, ("body" ++ show n, b) : ys)
unSection (Section k b) (n, ys) = (n, (k, b) : ys)
unSection (GlobalSection _) _ = error "Internal error! This should never happen!"
isGlobalSection :: Section k a -> Bool
isGlobalSection (GlobalSection _) = True
isGlobalSection _ = False
applyGlobalSections :: [Section k String] -> [Section k String]
applyGlobalSections xs = flip map xs $ fmap $ trim . (++globalSectionBody)
where globalSectionBody = let gs = foldr unGlobalSection [] xs in
if null gs then gs else "\n" ++ gs
unGlobalSection (GlobalSection b) ys
| null ys = b
| otherwise = b ++ "\n" ++ ys
unGlobalSection _ ys = ys
-- **TODO** parser needs to be completed below
sections :: Parsec String a [Section String String]
sections = many (section <|> globalSection <|> nonSection)
section :: Parsec String a (Section String String)
section = do
key <- sectionStart
body <- sectionBody
sectionEnd
return $ Section key body
sectionStart :: Parsec String a String
sectionStart = between (try $ string "$section(") (string ")$") sectionId
sectionId :: Parsec String a String
sectionId = between (char '"') (char '"') (many1 (noneOf "\""))
sectionEnd :: Parsec String a String
sectionEnd = string "$endsection$"
sectionBody :: Parsec String a String
sectionBody = try escapedDollar <|> many1 (noneOf "$")
escapedDollar :: Parsec String a String
escapedDollar = try (between (char '$') (char '$')
(try ((sectionStart >>= (\s -> return $ "$section(\"" ++ s ++ "\")$")) <|>
sectionEnd <|> string "$section$"))) <|>
try sectionEnd <|>
(string "$$" *> return "$")
globalSection :: Parsec String a (Section k String)
globalSection = GlobalSection <$> between (string "$section$") sectionEnd sectionBody
nonSection :: Parsec String a (Section k String)
nonSection = many1 (many1 (noneOf "$") <|> try escapedDollar) >>= return . NonSection . concat
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