50 lines
1.6 KiB
Plaintext
50 lines
1.6 KiB
Plaintext
import CMark
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import DocGen4.Output.Template
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import Lean.Data.Parsec
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open Lean
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namespace DocGen4
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namespace Output
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open Xml Parser Lean Parsec
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def manyDocument : Parsec (Array Element) := many (prolog *> element <* many Misc) <* eof
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partial def addAttributes : Element → Element
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| (Element.Element name attrs contents) =>
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-- heading only
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if name = "h1" ∨ name = "h2" ∨ name = "h3" ∨ name = "h4" ∨ name = "h5" ∨ name = "h6" then
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let id := "".intercalate (contents.map toString).toList
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|>.dropWhile (λ c => !(c.isAlphanum ∨ c = '-'))
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|>.toLower
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|>.replace " " "-"
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let anchorAttributes := Std.RBMap.empty
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|>.insert "class" "hover-link"
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|>.insert "href" s!"#{id}"
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let anchor := Element.Element "a" anchorAttributes #[Content.Character "#"]
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let newAttrs := attrs
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|>.insert "id" id
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|>.insert "class" "markdown-heading"
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let newContents :=
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contents.map (λ c => match c with
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| Content.Element e => Content.Element (addAttributes e)
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| _ => c)
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|>.push (Content.Element anchor)
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⟨ name, newAttrs, newContents⟩
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else
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let newContents := contents.map λ c => match c with
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| Content.Element e => Content.Element (addAttributes e)
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| _ => c
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⟨ name, attrs, newContents ⟩
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def docStringToHtml (s : String) : Html :=
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let rendered := CMark.renderHtml s
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let attributed := match manyDocument rendered.mkIterator with
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| Parsec.ParseResult.success _ res => "".intercalate (res.map addAttributes |>.map toString).toList
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| _ => rendered
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Html.text attributed
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end Output
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end DocGen4
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