-- ldgallery - A static generator which turns a collection of tagged -- pictures into a searchable web gallery. -- -- Copyright (C) 2019-2020 Pacien TRAN-GIRARD -- -- This program is free software: you can redistribute it and/or modify -- it under the terms of the GNU Affero 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 Affero General Public License for more details. -- -- You should have received a copy of the GNU Affero General Public License -- along with this program. If not, see <https://www.gnu.org/licenses/>. module Compiler ( compileGallery ) where import Control.Monad (liftM2) import Data.List (any) import Data.Maybe (isJust, fromMaybe) import Text.Regex (Regex, mkRegex, matchRegex) import System.FilePath ((</>)) import Data.Aeson (ToJSON) import qualified Data.Aeson as JSON import Config import Input (readInputTree) import Resource (buildGalleryTree, galleryCleanupResourceDir) import Files ( FileName , FSNode(..) , readDirectory , isHidden , nodeName , filterDir , ensureParentDir , isOutdated ) import Processors ( dirFileProcessor, itemFileProcessor, thumbnailFileProcessor , skipCached, withCached ) galleryConf :: String galleryConf = "gallery.yaml" indexFile :: String indexFile = "index.json" viewerMainFile :: String viewerMainFile = "index.html" viewerConfFile :: String viewerConfFile = "viewer.json" itemsDir :: String itemsDir = "items" thumbnailsDir :: String thumbnailsDir = "thumbnails" writeJSON :: ToJSON a => FileName -> a -> IO () writeJSON outputPath object = do putStrLn $ "Generating:\t" ++ outputPath ensureParentDir JSON.encodeFile outputPath object galleryDirFilter :: Regex -> FSNode -> Bool galleryDirFilter excludeRegex = (not . isHidden) &&& (not . isConfigFile) &&& (not . containsOutputGallery) &&& (not . excludedName) where (&&&) = liftM2 (&&) (|||) = liftM2 (||) matchName :: (FileName -> Bool) -> FSNode -> Bool matchName cond = maybe False cond . nodeName isConfigFile = matchName (== galleryConf) isGalleryIndex = matchName (== indexFile) isViewerIndex = matchName (== viewerMainFile) containsOutputGallery File{} = False containsOutputGallery Dir{items} = any (isGalleryIndex ||| isViewerIndex) items excludedName = isJust . matchRegex excludeRegex . fromMaybe "" . nodeName compileGallery :: FilePath -> FilePath -> Bool -> IO () compileGallery inputDirPath outputDirPath rebuildAll = do fullConfig <- readConfig inputGalleryConf let config = compiler fullConfig inputDir <- readDirectory inputDirPath let sourceFilter = galleryDirFilter (mkRegex $ ignoreFiles config) let sourceTree = filterDir sourceFilter inputDir inputTree <- readInputTree sourceTree invalidateCache <- isOutdated False inputGalleryConf outputIndex let cache = if invalidateCache || rebuildAll then skipCached else withCached let itemProc = itemProcessor (pictureMaxResolution config) cache let thumbnailProc = thumbnailProcessor (thumbnailMaxResolution config) cache let galleryBuilder = buildGalleryTree dirProcessor itemProc thumbnailProc (implicitDirectoryTag config) resources <- galleryBuilder (galleryName config) inputTree galleryCleanupResourceDir resources outputDirPath writeJSON outputIndex resources writeJSON outputViewerConf $ viewer fullConfig where inputGalleryConf = inputDirPath </> galleryConf outputIndex = outputDirPath </> indexFile outputViewerConf = outputDirPath </> viewerConfFile dirProcessor = dirFileProcessor inputDirPath outputDirPath itemsDir itemProcessor maxRes cache = itemFileProcessor maxRes cache inputDirPath outputDirPath itemsDir thumbnailProcessor thumbRes cache = thumbnailFileProcessor thumbRes cache inputDirPath outputDirPath thumbnailsDir