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|
(.module:
[lux (#- and)
[data
["." text
format]
[collection
["." list ("list/." functor)]]]
[type
abstract]
[world
[net (#+ URL)]]])
## https://www.markdownguide.org/basic-syntax/
(def: sanitize
(-> Text Text)
(|>> (text.replace-all "\" "\\")
(text.replace-all "`" "\`")
(text.replace-all "*" "\*")
(text.replace-all "_" "\_")
(text.replace-all "{" "\{")
(text.replace-all "}" "\}")
(text.replace-all "[" "\[")
(text.replace-all "]" "\]")
(text.replace-all "(" "\(")
(text.replace-all ")" "\)")
(text.replace-all "#" "\#")
(text.replace-all "+" "\+")
(text.replace-all "-" "\-")
(text.replace-all "." "\.")
(text.replace-all "!" "\!")))
(abstract: #export Span {} Any)
(abstract: #export Block {} Any)
(abstract: #export (Markdown brand)
{}
Text
(def: #export empty
Markdown
(:abstraction ""))
(def: #export text
(-> Text (Markdown Span))
(|>> ..sanitize :abstraction))
(def: blank-line (format text.new-line text.new-line))
(do-template [<name> <prefix>]
[(def: #export (<name> content)
(-> Text Markdown)
(:abstraction (format <prefix> " " (..sanitize content) ..blank-line)))]
[heading/1 "#"]
[heading/2 "##"]
[heading/3 "###"]
[heading/4 "####"]
[heading/5 "#####"]
[heading/6 "######"]
)
(def: (block content)
(-> Text (Markdown Block))
(:abstraction (format content ..blank-line)))
(def: #export paragraph
(-> (Markdown Span) (Markdown Block))
(|>> :representation ..block))
(def: #export break
(Markdown Span)
(:abstraction (format " " text.new-line)))
(do-template [<name> <wrapper>]
[(def: #export <name>
(-> (Markdown Span) (Markdown Span))
(|>> :representation
(text.enclose [<wrapper> <wrapper>])
:abstraction))]
[bold "**"]
[italic "_"]
)
(def: (prefix with)
(-> Text (-> Text Text))
(|>> (text.split-all-with text.new-line)
(list/map (function (_ line)
(if (text.empty? line)
line
(format with line))))
(text.join-with text.new-line)))
(def: indent
(-> Text Text)
(..prefix text.tab))
(def: #export quote
(-> (Markdown Block) (Markdown Block))
(|>> :representation
(..prefix "> ")
:abstraction))
(def: #export numbered-list
(-> (List [(Markdown Span) (Maybe (Markdown Block))])
(Markdown Block))
(|>> list.enumerate
(list/map (function (_ [idx [summary detail]])
(format (%n (inc idx)) ". " (:representation summary) text.new-line
(case detail
(#.Some detail)
(|> detail :representation ..indent (text.enclose [text.new-line text.new-line]))
#.None
""))))
(text.join-with text.new-line)
..block))
(def: #export bullet-list
(-> (List [(Markdown Span) (Maybe (Markdown Block))])
(Markdown Block))
(|>> (list/map (function (_ [summary detail])
(format "*. " (:representation summary) text.new-line
(case detail
(#.Some detail)
(|> detail :representation ..indent (text.enclose [text.new-line text.new-line]))
#.None
""))))
(text.join-with text.new-line)
..block))
(def: #export snippet
{#.doc "A snippet of code."}
(-> Text (Markdown Span))
(|>> ..sanitize (text.enclose ["`" "`"]) :abstraction))
(def: #export code
{#.doc "A block of code."}
(-> Text (Markdown Block))
(let [open (format "```" text.new-line)
close (format text.new-line "```")]
(|>> (text.enclose [open close]) ..block)))
(def: #export (image description url)
(-> Text URL (Markdown Span))
(:abstraction (format "![" (..sanitize description) "](" url ")")))
(def: #export horizontal-rule
(Markdown Block)
(..block "___"))
(def: #export (link description url)
(-> (Markdown Span) URL (Markdown Span))
(:abstraction (format "[" (:representation description) "](" url ")")))
(type: #export Email Text)
(do-template [<name> <type>]
[(def: #export <name>
(-> <type> (Markdown Span))
(|>> (text.enclose ["<" ">"]) :abstraction))]
[url URL]
[email Email]
)
(do-template [<name> <brand> <infix>]
[(def: #export (<name> pre post)
(-> (Markdown <brand>) (Markdown <brand>) (Markdown <brand>))
(:abstraction (format (:representation pre) <infix> (:representation post))))]
[and Span " "]
[then Block ""]
)
(def: #export markdown
(-> (Markdown Any) Text)
(|>> :representation))
)
|
