hledger/hledger-lib/Hledger/Write/Html/Lucid.hs

79 lines
2.8 KiB
Haskell

{-# LANGUAGE OverloadedStrings #-}
{- |
Export spreadsheet table data as HTML table.
This is derived from <https://hackage.haskell.org/package/classify-frog-0.2.4.3/src/src/Spreadsheet/Format.hs>
-}
module Hledger.Write.Html.Lucid (
printHtml,
formatRow,
formatCell,
) where
import qualified Hledger.Write.Html.Attribute as Attr
import qualified Hledger.Write.Spreadsheet as Spr
import Hledger.Write.Html (Lines, borderStyles)
import Hledger.Write.Spreadsheet (Type(..), Style(..), Emphasis(..), Cell(..))
import qualified Data.Text as Text
import qualified Lucid.Base as HtmlBase
import qualified Lucid as Html
import Data.Foldable (traverse_)
type Html = Html.Html ()
printHtml :: (Lines border) => [[Cell border Html]] -> Html
printHtml table = do
Html.link_ [Html.rel_ "stylesheet", Html.href_ "hledger.css"]
Html.style_ Attr.tableStylesheet
Html.table_ $ traverse_ formatRow table
formatRow:: (Lines border) => [Cell border Html] -> Html
formatRow = Html.tr_ . traverse_ formatCell
formatCell :: (Lines border) => Cell border Html -> Html
formatCell cell =
let str = cellContent cell in
let content =
if Text.null $ cellAnchor cell
then str
else Html.a_ [Html.href_ $ cellAnchor cell] str in
let style =
case borderStyles cell of
[] -> []
ss -> [Html.style_ $ Attr.concatStyles ss] in
let class_ =
map Html.class_ $
filter (not . Text.null) [Spr.textFromClass $ cellClass cell] in
let span_ makeCell attrs cont =
case Spr.cellSpan cell of
Spr.NoSpan -> makeCell attrs cont
Spr.Covered -> pure ()
Spr.SpanHorizontal n ->
makeCell (Html.colspan_ (Text.pack $ show n) : attrs) cont
Spr.SpanVertical n ->
makeCell (Html.rowspan_ (Text.pack $ show n) : attrs) cont
in
case cellStyle cell of
Head -> span_ Html.th_ (style++class_) content
Body emph ->
let align =
case cellType cell of
TypeString -> []
TypeDate -> []
_ -> [HtmlBase.makeAttribute "align" "right"]
valign =
case Spr.cellSpan cell of
Spr.SpanVertical n ->
if n>1
then [HtmlBase.makeAttribute "valign" "top"]
else []
_ -> []
withEmph =
case emph of
Item -> id
Total -> Html.b_
in span_ Html.td_ (style++align++valign++class_) $
withEmph content