make quasiquoter for text building

This commit is contained in:
Rhiannon Morris 2020-07-13 04:01:31 +02:00
parent 55a51464ee
commit 22185e3020
3 changed files with 265 additions and 92 deletions

View file

@ -1,6 +1,8 @@
module SinglePage (make) where
import Info hiding (Text)
import BuildVar
import Control.Exception
import qualified Data.Text as Strict
import qualified Data.Text.Lazy as Lazy
@ -26,80 +28,88 @@ make includeNsfw = toLazyText . make' includeNsfw
make' :: Bool -> Info -> Builder
make' includeNsfw (Info {date, title, tags, nsfwTags,
description, images, links}) =
"<!DOCTYPE html>\n" <>
"<html lang=en>\n" <>
"<meta charset=utf-8>\n" <>
"<link href=single.css rel=stylesheet>\n\n" <>
ifJust title (\t -> "<title>" <> esc t <> "</title>\n\n") <>
"<header>\n" <>
ifJust title (\t -> " <h1>" <> esc t <> "</h1>\n") <>
" <h2 class=date>" <> formatDate date <> "</h2>\n" <>
buttonBar title' includeNsfw images <>
"</header>\n\n" <>
"<main>\n" <>
" <img id=it src=\"" <> path0 <> "\">\n\n" <>
ifJust description (\d ->
" <div class=desc>\n" <>
" <h2>description</h2>\n" <>
indent 4 d <>
" </div>\n") <> "\n" <>
makeTags includeNsfw tags nsfwTags <>
extLinks includeNsfw links <>
"</main>\n\n" <>
"<footer>\n" <>
" <nav class=back>\n" <>
" <a href=../>back to gallery</a>\n" <>
" </nav>\n" <>
"</footer>\n"
where
path0' = let Image {path} = head images in path
path0 = fromText path0'
title' = fromMaybe path0' title
description, images, links}) = [b|@0
<!DOCTYPE html>
<html lang=en>
<meta charset=utf-8>
$titleTag
<header>
$titleHeader
<h2 class=date>$formattedDate</date>
$buttonBar
</header>
<main>
<img id=it src="$*path0">
$descSection
$tagsList
$linksList
</main>
<footer>
<nav class=back>
<a href=../>back to gallery</a>
</nav>
</footer>
|]
where
titleTag = ifJust title \t -> [b|<title>$*t</title>|]
titleHeader = ifJust title \t -> [b|<h1>$*t</h1>|]
formattedDate = formatDate date
buttonBar = makeButtonBar (fromMaybe path0 title) includeNsfw images
path0 = let Image {path} = head images in path
descSection = ifJust description makeDesc
tagsList = makeTags includeNsfw tags nsfwTags
linksList = extLinks includeNsfw links
makeDesc :: Strict.Text -> Builder
makeDesc desc = [b|@2
<div class=desc>
<h2>description</h2>
$4*desc
</div>
|]
ifJust :: Monoid b => Maybe a -> (a -> b) -> b
ifJust x f = maybe mempty f x
esc :: Strict.Text -> Builder
esc = foldMap esc1 . Strict.unpack where
esc1 '<' = "&lt;"
esc1 '>' = "&gt;"
esc1 '&' = "&amp;"
esc1 '"' = "&quot;"
esc1 '\'' = "&squot;"
esc1 c = singleton c
formatDate :: Day -> Builder
formatDate = fromString . formatTime defaultTimeLocale "%e %#B %Y"
buttonBar :: Strict.Text -> Bool -> [Image] -> Builder
buttonBar title includeNsfw allImages =
if null images then
throw $ NoEligibleImages title
else if length images == 1 then
mempty
else
" <nav id=variants class=buttonbar>\n" <>
" <h2>alts</h2>\n" <>
" <ul id=variantlist>\n" <>
List.foldl' (\b (i, im) -> b <> altButton i im) mempty iimages <>
" </ul>\n" <>
" </nav>\n"
makeButtonBar :: Strict.Text -> Bool -> [Image] -> Builder
makeButtonBar title includeNsfw allImages =
case length images of
0 -> throw $ NoEligibleImages title
1 -> ""
_ -> [b|@2
<nav id=variants class=buttonbar>
<h2>alts</h2>
<ul id=variantlist>
$6.alts
</ul>
</nav>
|]
where
images | includeNsfw = allImages
| otherwise = filter (\Image {nsfw} -> not nsfw) allImages
iimages = zip [0..] images
alts = map (uncurry altButton) iimages
altButton :: Int -> Image -> Builder
altButton i (Image {label, path, nsfw}) =
" <li" <> nsfwClass <> ">\n" <>
" <input type=radio " <> checked <> "id=\"" <> idLabel <> "\" " <>
"name=variant autocomplete=off\n" <>
" value=\"" <> fromText path <> "\">\n" <>
" <label for=\"" <> idLabel <> "\">" <> fromText label <> "</label>\n"
altButton i (Image {label, path, nsfw}) = [b|@6
<li$nsfwClass>
<input type=radio$checked id="$idLabel" name=variant
autocomplete=off value="$*path">
<label for="$idLabel">$*label</label>
|]
where
nsfwClass = if nsfw then " class=nsfw" else ""
checked = if i == 0 then "checked " else ""
checked = if i == 0 then " checked" else ""
idLabel = escId label
escId :: Strict.Text -> Builder
@ -109,41 +119,40 @@ escId = foldMap esc1 . Strict.unpack where
| c < 'ÿ' && not (Char.isAlphaNum c || c == '-') = "_"
| otherwise = singleton c
indent :: Int -> Strict.Text -> Builder
indent n txt = spaces <> go (Strict.unpack txt) where
go "" = mempty
go "\n" = "\n"
go ('\n':cs) = singleton '\n' <> spaces <> go cs
go (c:cs) = singleton c <> go cs
spaces = fromString $ replicate n ' '
makeTags :: Bool -> [Strict.Text] -> [Strict.Text] -> Builder
makeTags includeNsfw sfwTags nsfwTags =
if null tags then mempty else
" <div class=tags>\n" <>
" <h2>tags</h2>\n" <>
" <ul>\n" <> foldMap makeTag tags <> " </ul>\n" <>
" </div>\n\n"
if null tags then "" else [b|@2
<div class=tags>
<h2>tags</h2>
<ul>
$6.tagList
</ul>
</div>
|]
where
tagList = map makeTag tags
makeTag t = [b|<li>$*t|]
tags = List.nub $ if includeNsfw then sfwTags else sfwTags <> nsfwTags
makeTag t = " <li>" <> fromText t <> "\n"
extLinks :: Bool -> [Link] -> Builder
extLinks includeNsfw links =
let links' =
if includeNsfw then links
else filter (\Link {nsfw} -> not nsfw) links in
if null links' then mempty else
" <div class=links>\n" <>
" <h2>links</h2>\n" <>
" <ul>\n" <>
foldMap extLink links' <>
" </ul>\n" <>
" </div>\n"
extLinks includeNsfw allLinks =
if null links then "" else [b|@2
<div class=links>
<h2>links</h2>
<ul>
$6.linkList
</ul>
</div>
|]
where
links | includeNsfw = allLinks
| otherwise = filter (\Link {nsfw} -> not nsfw) allLinks
linkList = map extLink links
extLink :: Link -> Builder
extLink (Link {title, url}) =
" <li>\n" <>
" <a href=\"" <> fromText url <> "\">\n" <>
" " <> fromText title <> "\n" <>
" </a>\n"
extLink (Link {title, url}) = [b|@6
<li>
<a href="$*url">
$*title
</a>
|]