{-# LANGUAGE ScopedTypeVariables #-} {- Copyright (C) 2008-9 John MacFarlane 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 2 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, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -} {- Handlers for wiki functions. -} module Network.Gitit.Handlers ( handleAny , debugHandler , randomPage , discussPage , createPage , showActivity , goToPage , searchResults , uploadForm , uploadFile , indexPage , categoryPage , categoryListPage , preview , showRawPage , showFileAsText , showPageHistory , showFileHistory , showPage , showPageDiff , showFileDiff , exportPage , updatePage , editPage , deletePage , confirmDelete , showHighlightedSource , expireCache , feedHandler ) where import Safe import Network.Gitit.Server import Network.Gitit.Framework import Network.Gitit.Layout import Network.Gitit.Types import Network.Gitit.Feed (filestoreToXmlFeed, FeedConfig(..)) import Network.Gitit.Util (orIfNull) import Network.Gitit.Cache (expireCachedFile, lookupCache, cacheContents) import Network.Gitit.ContentTransformer (showRawPage, showFileAsText, showPage, exportPage, showHighlightedSource, preview, applyPreCommitPlugins) import Network.Gitit.Page (readCategories) import qualified Control.Exception as E import System.FilePath import Network.Gitit.State import Text.XHtml hiding ( (), dir, method, password, rev ) import qualified Text.XHtml as X ( method ) import Data.List (intercalate, intersperse, delete, nub, sortBy, find, isPrefixOf, inits, sort, (\\)) import Data.List.Split (wordsBy) import Data.Maybe (fromMaybe, mapMaybe, isJust, catMaybes) import Data.Ord (comparing) import Data.Char (toLower, isSpace) import Control.Monad.Reader import qualified Data.ByteString.Lazy as B import qualified Data.ByteString as S import Network.HTTP (urlEncodeVars) import Data.Time (getCurrentTime, addUTCTime) import Data.Time.Clock (diffUTCTime, UTCTime(..)) import Data.FileStore import System.Log.Logger (logM, Priority(..)) handleAny :: Handler handleAny = withData $ \(params :: Params) -> uriRest $ \uri -> let path' = uriPath uri in do fs <- getFileStore let rev = pRevision params mimetype <- getMimeTypeForExtension (takeExtension path') res <- liftIO $ E.try (retrieve fs path' rev :: IO B.ByteString) case res of Right contents -> ignoreFilters >> -- don't compress (ok $ setContentType mimetype $ (toResponse noHtml) {rsBody = contents}) -- ugly hack Left NotFound -> mzero Left e -> error (show e) debugHandler :: Handler debugHandler = withData $ \(params :: Params) -> do req <- askRq liftIO $ logM "gitit" DEBUG (show req) page <- getPage liftIO $ logM "gitit" DEBUG $ "Page = '" ++ page ++ "'\n" ++ show params mzero randomPage :: Handler randomPage = do fs <- getFileStore base' <- getWikiBase prunedFiles <- liftIO (index fs) >>= filterM isPageFile >>= filterM isNotDiscussPageFile let pages = map dropExtension prunedFiles if null pages then error "No pages found!" else do secs <- liftIO (fmap utctDayTime getCurrentTime) let newPage = pages !! (truncate (secs * 1000000) `mod` length pages) seeOther (base' ++ urlForPage newPage) $ toResponse $ p << "Redirecting to a random page" discussPage :: Handler discussPage = do page <- getPage base' <- getWikiBase seeOther (base' ++ urlForPage (if isDiscussPage page then page else ('@':page))) $ toResponse "Redirecting to discussion page" createPage :: Handler createPage = do page <- getPage base' <- getWikiBase case page of ('_':_) -> mzero -- don't allow creation of _index, etc. _ -> formattedPage defaultPageLayout{ pgPageName = page , pgTabs = [] , pgTitle = "Create " ++ page ++ "?" } $ (p << stringToHtml ("There is no page named '" ++ page ++ "'. You can:")) +++ (unordList $ [ anchor ! [href $ base' ++ "/_edit" ++ urlForPage page] << ("Create the page '" ++ page ++ "'") , anchor ! [href $ base' ++ "/_search?" ++ (urlEncodeVars [("patterns", page)])] << ("Search for pages containing the text '" ++ page ++ "'")]) uploadForm :: Handler uploadForm = withData $ \(params :: Params) -> do let origPath = pFilename params let wikiname = pWikiname params `orIfNull` takeFileName origPath let logMsg = pLogMsg params let upForm = form ! [X.method "post", enctype "multipart/form-data"] << fieldset << [ p << [label ! [thefor "file"] << "File to upload:" , br , afile "file" ! [value origPath] ] , p << [ label ! [thefor "wikiname"] << "Name on wiki, including extension" , noscript << " (leave blank to use the same filename)" , stringToHtml ":" , br , textfield "wikiname" ! [value wikiname] , primHtmlChar "nbsp" , checkbox "overwrite" "yes" , label ! [thefor "overwrite"] << "Overwrite existing file" ] , p << [ label ! [thefor "logMsg"] << "Description of content or changes:" , br , textfield "logMsg" ! [size "60", value logMsg] , submit "upload" "Upload" ] ] formattedPage defaultPageLayout{ pgMessages = pMessages params, pgScripts = ["uploadForm.js"], pgShowPageTools = False, pgTabs = [], pgTitle = "Upload a file"} upForm uploadFile :: Handler uploadFile = withData $ \(params :: Params) -> do let origPath = pFilename params let filePath = pFilePath params let wikiname = normalise $ dropWhile (=='/') $ pWikiname params `orIfNull` takeFileName origPath let logMsg = pLogMsg params cfg <- getConfig wPF <- isPageFile wikiname mbUser <- getLoggedInUser (user, email) <- case mbUser of Nothing -> return ("Anonymous", "") Just u -> return (uUsername u, uEmail u) let overwrite = pOverwrite params fs <- getFileStore exists <- liftIO $ E.catch (latest fs wikiname >> return True) $ \e -> if e == NotFound then return False else E.throwIO e >> return True let inStaticDir = staticDir cfg `isPrefixOf` (repositoryPath cfg wikiname) let inTemplatesDir = templatesDir cfg `isPrefixOf` (repositoryPath cfg wikiname) let dirs' = splitDirectories $ takeDirectory wikiname let imageExtensions = [".png", ".jpg", ".gif"] let errors = validate [ (null . filter (not . isSpace) $ logMsg, "Description cannot be empty.") , (".." `elem` dirs', "Wikiname cannot contain '..'") , (null origPath, "File not found.") , (inStaticDir, "Destination is inside static directory.") , (inTemplatesDir, "Destination is inside templates directory.") , (not overwrite && exists, "A file named '" ++ wikiname ++ "' already exists in the repository: choose a new name " ++ "or check the box to overwrite the existing file.") , (wPF, "This file extension is reserved for wiki pages.") ] if null errors then do expireCachedFile wikiname `mplus` return () fileContents <- liftIO $ B.readFile filePath let len = B.length fileContents liftIO $ save fs wikiname (Author user email) logMsg fileContents let contents = thediv << [ h2 << ("Uploaded " ++ show len ++ " bytes") , if takeExtension wikiname `elem` imageExtensions then p << "To add this image to a page, use:" +++ pre << ("![alt text](/" ++ wikiname ++ ")") else p << "To link to this resource from a page, use:" +++ pre << ("[link label](/" ++ wikiname ++ ")") ] formattedPage defaultPageLayout{ pgMessages = pMessages params, pgShowPageTools = False, pgTabs = [], pgTitle = "Upload successful"} contents else withMessages errors uploadForm goToPage :: Handler goToPage = withData $ \(params :: Params) -> do let gotopage = pGotoPage params fs <- getFileStore pruned_files <- liftIO (index fs) >>= filterM isPageFile let allPageNames = map dropExtension pruned_files let findPage f = find f allPageNames let exactMatch f = gotopage == f let insensitiveMatch f = (map toLower gotopage) == (map toLower f) let prefixMatch f = (map toLower gotopage) `isPrefixOf` (map toLower f) base' <- getWikiBase case findPage exactMatch of Just m -> seeOther (base' ++ urlForPage m) $ toResponse "Redirecting to exact match" Nothing -> case findPage insensitiveMatch of Just m -> seeOther (base' ++ urlForPage m) $ toResponse "Redirecting to case-insensitive match" Nothing -> case findPage prefixMatch of Just m -> seeOther (base' ++ urlForPage m) $ toResponse $ "Redirecting" ++ " to partial match" Nothing -> searchResults searchResults :: Handler searchResults = withData $ \(params :: Params) -> do let patterns = pPatterns params `orIfNull` [pGotoPage params] fs <- getFileStore matchLines <- if null patterns then return [] else liftIO $ E.catch (search fs SearchQuery{ queryPatterns = patterns , queryWholeWords = True , queryMatchAll = True , queryIgnoreCase = True }) -- catch error, because newer versions of git -- return 1 on no match, and filestore <=0.3.3 -- doesn't handle this properly: (\(_ :: FileStoreError) -> return []) let contentMatches = map matchResourceName matchLines allPages <- liftIO (index fs) >>= filterM isPageFile let slashToSpace = map (\c -> if c == '/' then ' ' else c) let inPageName pageName' x = x `elem` (words $ slashToSpace $ dropExtension pageName') let matchesPatterns pageName' = not (null patterns) && all (inPageName (map toLower pageName')) (map (map toLower) patterns) let pageNameMatches = filter matchesPatterns allPages prunedFiles <- filterM isPageFile (contentMatches ++ pageNameMatches) let allMatchedFiles = nub $ prunedFiles let matchesInFile f = mapMaybe (\x -> if matchResourceName x == f then Just (matchLine x) else Nothing) matchLines let matches = map (\f -> (f, matchesInFile f)) allMatchedFiles let relevance (f, ms) = length ms + if f `elem` pageNameMatches then 100 else 0 let preamble = if null patterns then h3 << ["Please enter a search term."] else h3 << [ stringToHtml (show (length matches) ++ " matches found for ") , thespan ! [identifier "pattern"] << unwords patterns] base' <- getWikiBase let toMatchListItem (file, contents) = li << [ anchor ! [href $ base' ++ urlForPage (dropExtension file)] << dropExtension file , stringToHtml (" (" ++ show (length contents) ++ " matching lines)") , stringToHtml " " , anchor ! [href "#", theclass "showmatch", thestyle "display: none;"] << if length contents > 0 then "[show matches]" else "" , pre ! [theclass "matches"] << unlines contents] let htmlMatches = preamble +++ olist << map toMatchListItem (reverse $ sortBy (comparing relevance) matches) formattedPage defaultPageLayout{ pgMessages = pMessages params, pgShowPageTools = False, pgTabs = [], pgScripts = ["search.js"], pgTitle = "Search results"} htmlMatches showPageHistory :: Handler showPageHistory = withData $ \(params :: Params) -> do page <- getPage cfg <- getConfig showHistory (pathForPage page $ defaultExtension cfg) page params showFileHistory :: Handler showFileHistory = withData $ \(params :: Params) -> do file <- getPage showHistory file file params showHistory :: String -> String -> Params -> Handler showHistory file page params = do fs <- getFileStore hist <- liftIO $ history fs [file] (TimeRange Nothing Nothing) (Just $ pLimit params) base' <- getWikiBase let versionToHtml rev pos = li ! [theclass "difflink", intAttr "order" pos, strAttr "revision" (revId rev), strAttr "diffurl" (base' ++ "/_diff/" ++ page)] << [ thespan ! [theclass "date"] << (show $ revDateTime rev) , stringToHtml " (" , thespan ! [theclass "author"] << anchor ! [href $ base' ++ "/_activity?" ++ urlEncodeVars [("forUser", authorName $ revAuthor rev)]] << (authorName $ revAuthor rev) , stringToHtml "): " , anchor ! [href (base' ++ urlForPage page ++ "?revision=" ++ revId rev)] << thespan ! [theclass "subject"] << revDescription rev , noscript << ([ stringToHtml " [compare with " , anchor ! [href $ base' ++ "/_diff" ++ urlForPage page ++ "?to=" ++ revId rev] << "previous" ] ++ (if pos /= 1 then [ primHtmlChar "nbsp" , primHtmlChar "bull" , primHtmlChar "nbsp" , anchor ! [href $ base' ++ "/_diff" ++ urlForPage page ++ "?from=" ++ revId rev] << "current" ] else []) ++ [stringToHtml "]"]) ] let contents = if null hist then noHtml else ulist ! [theclass "history"] << zipWith versionToHtml hist [length hist, (length hist - 1)..1] let more = if length hist == pLimit params then anchor ! [href $ base' ++ "/_history" ++ urlForPage page ++ "?limit=" ++ show (pLimit params + 100)] << "Show more..." else noHtml let tabs = if file == page -- source file, not wiki page then [ViewTab,HistoryTab] else pgTabs defaultPageLayout formattedPage defaultPageLayout{ pgPageName = page, pgMessages = pMessages params, pgScripts = ["dragdiff.js"], pgTabs = tabs, pgSelectedTab = HistoryTab, pgTitle = ("Changes to " ++ page) } $ contents +++ more showActivity :: Handler showActivity = withData $ \(params :: Params) -> do cfg <- getConfig currTime <- liftIO getCurrentTime let defaultDaysAgo = fromIntegral (recentActivityDays cfg) let daysAgo = addUTCTime (defaultDaysAgo * (-60) * 60 * 24) currTime let since = case pSince params of Nothing -> Just daysAgo Just t -> Just t let forUser = pForUser params fs <- getFileStore hist <- liftIO $ history fs [] (TimeRange since Nothing) (Just $ pLimit params) let hist' = case forUser of Nothing -> hist Just u -> filter (\r -> authorName (revAuthor r) == u) hist let fileFromChange (Added f) = f fileFromChange (Modified f) = f fileFromChange (Deleted f) = f base' <- getWikiBase let fileAnchor revis file = if takeExtension file == "." ++ (defaultExtension cfg) then anchor ! [href $ base' ++ "/_diff" ++ urlForPage (dropExtension file) ++ "?to=" ++ revis] << dropExtension file else anchor ! [href $ base' ++ urlForPage file ++ "?revision=" ++ revis] << file let filesFor changes revis = intersperse (stringToHtml " ") $ map (fileAnchor revis . fileFromChange) changes let heading = h1 << ("Recent changes by " ++ fromMaybe "all users" forUser) let revToListItem rev = li << [ thespan ! [theclass "date"] << (show $ revDateTime rev) , stringToHtml " (" , thespan ! [theclass "author"] << anchor ! [href $ base' ++ "/_activity?" ++ urlEncodeVars [("forUser", authorName $ revAuthor rev)]] << (authorName $ revAuthor rev) , stringToHtml "): " , thespan ! [theclass "subject"] << revDescription rev , stringToHtml " (" , thespan ! [theclass "files"] << filesFor (revChanges rev) (revId rev) , stringToHtml ")" ] let contents = ulist ! [theclass "history"] << map revToListItem hist' formattedPage defaultPageLayout{ pgMessages = pMessages params, pgShowPageTools = False, pgTabs = [], pgTitle = "Recent changes" } (heading +++ contents) showPageDiff :: Handler showPageDiff = withData $ \(params :: Params) -> do page <- getPage cfg <- getConfig showDiff (pathForPage page $ defaultExtension cfg) page params showFileDiff :: Handler showFileDiff = withData $ \(params :: Params) -> do page <- getPage showDiff page page params showDiff :: String -> String -> Params -> Handler showDiff file page params = do let from = pFrom params let to = pTo params -- 'to' or 'from' must be given when (from == Nothing && to == Nothing) mzero fs <- getFileStore -- if 'to' is not specified, defaults to current revision -- if 'from' is not specified, defaults to revision immediately before 'to' from' <- case (from, to) of (Just _, _) -> return from (Nothing, Nothing) -> return from (Nothing, Just t) -> do pageHist <- liftIO $ history fs [file] (TimeRange Nothing Nothing) Nothing let (_, upto) = break (\r -> idsMatch fs (revId r) t) pageHist return $ if length upto >= 2 -- immediately preceding revision then Just $ revId $ upto !! 1 else Nothing result' <- liftIO $ E.try $ getDiff fs file from' to case result' of Left NotFound -> mzero Left e -> liftIO $ E.throwIO e Right htmlDiff -> formattedPage defaultPageLayout{ pgPageName = page, pgRevision = from' `mplus` to, pgMessages = pMessages params, pgTabs = DiffTab : pgTabs defaultPageLayout, pgSelectedTab = DiffTab, pgTitle = page } htmlDiff getDiff :: FileStore -> FilePath -> Maybe RevisionId -> Maybe RevisionId -> IO Html getDiff fs file from to = do rawDiff <- diff fs file from to let diffLineToHtml (Both xs _) = thespan << unlines xs diffLineToHtml (First xs) = thespan ! [theclass "deleted"] << unlines xs diffLineToHtml (Second xs) = thespan ! [theclass "added"] << unlines xs return $ h2 ! [theclass "revision"] << ("Changes from " ++ fromMaybe "beginning" from ++ " to " ++ fromMaybe "current" to) +++ pre ! [theclass "diff"] << map diffLineToHtml rawDiff editPage :: Handler editPage = withData editPage' editPage' :: Params -> Handler editPage' params = do let rev = pRevision params -- if this is set, we're doing a revert fs <- getFileStore page <- getPage cfg <- getConfig let getRevisionAndText = E.catch (do c <- liftIO $ retrieve fs (pathForPage page $ defaultExtension cfg) rev -- even if pRevision is set, we return revId of latest -- saved version (because we're doing a revert and -- we don't want gitit to merge the changes with the -- latest version) r <- liftIO $ latest fs (pathForPage page $ defaultExtension cfg) >>= revision fs return (Just $ revId r, c)) (\e -> if e == NotFound then return (Nothing, "") else E.throwIO e) (mbRev, raw) <- case pEditedText params of Nothing -> liftIO getRevisionAndText Just t -> let r = if null (pSHA1 params) then Nothing else Just (pSHA1 params) in return (r, t) let messages = pMessages params let logMsg = pLogMsg params let sha1Box = case mbRev of Just r -> textfield "sha1" ! [thestyle "display: none", value r] Nothing -> noHtml let readonly = if isJust (pRevision params) -- disable editing of text box if it's a revert then [strAttr "readonly" "yes", strAttr "style" "color: gray"] else [] base' <- getWikiBase let editForm = gui (base' ++ urlForPage page) ! [identifier "editform"] << [ sha1Box , textarea ! (readonly ++ [cols "80", name "editedText", identifier "editedText"]) << raw , br , label ! [thefor "logMsg"] << "Description of changes:" , br , textfield "logMsg" ! (readonly ++ [value (logMsg `orIfNull` defaultSummary cfg) ]) , submit "update" "Save" , primHtmlChar "nbsp" , submit "cancel" "Discard" , primHtmlChar "nbsp" , input ! [thetype "button", theclass "editButton", identifier "previewButton", strAttr "onClick" "updatePreviewPane();", strAttr "style" "display: none;", value "Preview" ] , thediv ! [ identifier "previewpane" ] << noHtml ] let pgScripts' = ["preview.js"] let pgScripts'' = case mathMethod cfg of MathML -> "MathMLinHTML.js" : pgScripts' MathJax url -> url : pgScripts' _ -> pgScripts' formattedPage defaultPageLayout{ pgPageName = page, pgMessages = messages, pgRevision = rev, pgShowPageTools = False, pgShowSiteNav = False, pgMarkupHelp = Just $ markupHelp cfg, pgSelectedTab = EditTab, pgScripts = pgScripts'', pgTitle = ("Editing " ++ page) } editForm confirmDelete :: Handler confirmDelete = do page <- getPage fs <- getFileStore cfg <- getConfig -- determine whether there is a corresponding page, and if not whether there -- is a corresponding file pageTest <- liftIO $ E.try $ latest fs (pathForPage page $ defaultExtension cfg) fileToDelete <- case pageTest of Right _ -> return $ pathForPage page $ defaultExtension cfg -- a page Left NotFound -> do fileTest <- liftIO $ E.try $ latest fs page case fileTest of Right _ -> return page -- a source file Left NotFound -> return "" Left e -> fail (show e) Left e -> fail (show e) let confirmForm = gui "" << [ p << "Are you sure you want to delete this page?" , input ! [thetype "text", name "filetodelete", strAttr "style" "display: none;", value fileToDelete] , submit "confirm" "Yes, delete it!" , stringToHtml " " , submit "cancel" "No, keep it!" , br ] formattedPage defaultPageLayout{ pgTitle = "Delete " ++ page ++ "?" } $ if null fileToDelete then ulist ! [theclass "messages"] << li << "There is no file or page by that name." else confirmForm deletePage :: Handler deletePage = withData $ \(params :: Params) -> do page <- getPage cfg <- getConfig let file = pFileToDelete params mbUser <- getLoggedInUser (user, email) <- case mbUser of Nothing -> return ("Anonymous", "") Just u -> return (uUsername u, uEmail u) let author = Author user email let descrip = deleteSummary cfg base' <- getWikiBase if pConfirm params && (file == page || file == page <.> (defaultExtension cfg)) then do fs <- getFileStore liftIO $ Data.FileStore.delete fs file author descrip seeOther (base' ++ "/") $ toResponse $ p << "File deleted" else seeOther (base' ++ urlForPage page) $ toResponse $ p << "Not deleted" updatePage :: Handler updatePage = withData $ \(params :: Params) -> do page <- getPage cfg <- getConfig mbUser <- getLoggedInUser (user, email) <- case mbUser of Nothing -> return ("Anonymous", "") Just u -> return (uUsername u, uEmail u) editedText <- case pEditedText params of Nothing -> error "No body text in POST request" Just b -> applyPreCommitPlugins b let logMsg = pLogMsg params `orIfNull` defaultSummary cfg let oldSHA1 = pSHA1 params fs <- getFileStore base' <- getWikiBase if null . filter (not . isSpace) $ logMsg then withMessages ["Description cannot be empty."] editPage else do when (length editedText > fromIntegral (maxPageSize cfg)) $ error "Page exceeds maximum size." -- check SHA1 in case page has been modified, merge modifyRes <- if null oldSHA1 then liftIO $ create fs (pathForPage page $ defaultExtension cfg) (Author user email) logMsg editedText >> return (Right ()) else do expireCachedFile (pathForPage page $ defaultExtension cfg) `mplus` return () liftIO $ E.catch (modify fs (pathForPage page $ defaultExtension cfg) oldSHA1 (Author user email) logMsg editedText) (\e -> if e == Unchanged then return (Right ()) else E.throwIO e) case modifyRes of Right () -> seeOther (base' ++ urlForPage page) $ toResponse $ p << "Page updated" Left (MergeInfo mergedWithRev conflicts mergedText) -> do let mergeMsg = "The page has been edited since you checked it out. " ++ "Changes from revision " ++ revId mergedWithRev ++ " have been merged into your edits below. " ++ if conflicts then "Please resolve conflicts and Save." else "Please review and Save." editPage' $ params{ pEditedText = Just mergedText, pSHA1 = revId mergedWithRev, pMessages = [mergeMsg] } indexPage :: Handler indexPage = do path' <- getPath base' <- getWikiBase cfg <- getConfig let ext = defaultExtension cfg let prefix' = if null path' then "" else path' ++ "/" fs <- getFileStore listing <- liftIO $ directory fs prefix' let isNotDiscussionPage (FSFile f) = isNotDiscussPageFile f isNotDiscussionPage (FSDirectory _) = return True prunedListing <- filterM isNotDiscussionPage listing let htmlIndex = fileListToHtml base' prefix' ext prunedListing formattedPage defaultPageLayout{ pgPageName = prefix', pgShowPageTools = False, pgTabs = [], pgScripts = [], pgTitle = "Contents"} htmlIndex fileListToHtml :: String -> String -> String -> [Resource] -> Html fileListToHtml base' prefix ext files = let fileLink (FSFile f) | takeExtension f == "." ++ ext = li ! [theclass "page" ] << anchor ! [href $ base' ++ urlForPage (prefix ++ dropExtension f)] << dropExtension f fileLink (FSFile f) = li ! [theclass "upload"] << concatHtml [ anchor ! [href $ base' ++ urlForPage (prefix ++ f)] << f , anchor ! [href $ base' ++ "_delete" ++ urlForPage (prefix ++ f)] << "(delete)" ] fileLink (FSDirectory f) = li ! [theclass "folder"] << anchor ! [href $ base' ++ urlForPage (prefix ++ f) ++ "/"] << f updirs = drop 1 $ inits $ splitPath $ '/' : prefix uplink = foldr (\d accum -> concatHtml [ anchor ! [theclass "updir", href $ if length d <= 1 then base' ++ "/_index" else base' ++ urlForPage (joinPath $ drop 1 d)] << lastNote "fileListToHtml" d, accum]) noHtml updirs in uplink +++ ulist ! [theclass "index"] << map fileLink files -- NOTE: The current implementation of categoryPage does not go via the -- filestore abstraction. That is bad, but can only be fixed if we add -- more sophisticated searching options to filestore. categoryPage :: Handler categoryPage = do path' <- getPath cfg <- getConfig let pcategories = wordsBy (==',') path' let repoPath = repositoryPath cfg let categoryDescription = "Category: " ++ (intercalate " + " pcategories) fs <- getFileStore pages <- liftIO (index fs) >>= filterM isPageFile >>= filterM isNotDiscussPageFile matches <- liftM catMaybes $ forM pages $ \f -> do categories <- liftIO $ readCategories $ repoPath f return $ if all ( `elem` categories) pcategories then Just (f, categories \\ pcategories) else Nothing base' <- getWikiBase let toMatchListItem file = li << [ anchor ! [href $ base' ++ urlForPage (dropExtension file)] << dropExtension file ] let toRemoveListItem cat = li << [ anchor ! [href $ base' ++ (if null (tail pcategories) then "/_categories" else "/_category" ++ urlForPage (intercalate "," $ Data.List.delete cat pcategories)) ] << ("-" ++ cat) ] let toAddListItem cat = li << [ anchor ! [href $ base' ++ "/_category" ++ urlForPage (path' ++ "," ++ cat) ] << ("+" ++ cat) ] let matchList = ulist << map toMatchListItem (fst $ unzip matches) +++ thediv ! [ identifier "categoryList" ] << ulist << (++) (map toAddListItem (nub $ concat $ snd $ unzip matches)) (map toRemoveListItem pcategories) formattedPage defaultPageLayout{ pgPageName = categoryDescription, pgShowPageTools = False, pgTabs = [], pgScripts = ["search.js"], pgTitle = categoryDescription } matchList categoryListPage :: Handler categoryListPage = do cfg <- getConfig let repoPath = repositoryPath cfg fs <- getFileStore pages <- liftIO (index fs) >>= filterM isPageFile >>= filterM isNotDiscussPageFile categories <- liftIO $ liftM (nub . sort . concat) $ forM pages $ \f -> readCategories (repoPath f) base' <- getWikiBase let toCatLink ctg = li << [ anchor ! [href $ base' ++ "/_category" ++ urlForPage ctg] << ctg ] let htmlMatches = ulist << map toCatLink categories formattedPage defaultPageLayout{ pgPageName = "Categories", pgShowPageTools = False, pgTabs = [], pgScripts = ["search.js"], pgTitle = "Categories" } htmlMatches expireCache :: Handler expireCache = do page <- getPage cfg <- getConfig -- try it as a page first, then as an uploaded file expireCachedFile (pathForPage page $ defaultExtension cfg) expireCachedFile page ok $ toResponse () feedHandler :: Handler feedHandler = do cfg <- getConfig when (not $ useFeed cfg) mzero base' <- getWikiBase feedBase <- if null (baseUrl cfg) -- if baseUrl blank, try to get it from Host header then do mbHost <- getHost case mbHost of Nothing -> error "Could not determine base URL" Just hn -> return $ "http://" ++ hn ++ base' else case baseUrl cfg ++ base' of w@('h':'t':'t':'p':'s':':':'/':'/':_) -> return w x@('h':'t':'t':'p':':':'/':'/':_) -> return x y -> return $ "http://" ++ y let fc = FeedConfig{ fcTitle = wikiTitle cfg , fcBaseUrl = feedBase , fcFeedDays = feedDays cfg } path' <- getPath -- e.g. "foo/bar" if they hit /_feed/foo/bar let file = (path' `orIfNull` "_site") <.> "feed" let mbPath = if null path' then Nothing else Just path' -- first, check for a cached version that is recent enough now <- liftIO getCurrentTime let isRecentEnough t = truncate (diffUTCTime now t) < 60 * feedRefreshTime cfg mbCached <- lookupCache file case mbCached of Just (modtime, contents) | isRecentEnough modtime -> do let emptyResponse = setContentType "application/atom+xml; charset=utf-8" . toResponse $ () ok $ emptyResponse{rsBody = B.fromChunks [contents]} _ -> do fs <- getFileStore resp' <- liftM toResponse $ liftIO (filestoreToXmlFeed fc fs mbPath) cacheContents file $ S.concat $ B.toChunks $ rsBody resp' ok . setContentType "application/atom+xml; charset=UTF-8" $ resp'