42 lines
1.2 KiB
Python
42 lines
1.2 KiB
Python
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from html import unescape
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from re import Match
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from textwrap import dedent
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from typing import Any
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from mistune import HTMLRenderer
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from mistune.block_parser import BlockParser
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from mistune.core import BlockState
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from mistune.directives import DirectivePlugin, RSTDirective
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from mistune.markdown import Markdown
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from html5tagger import HTML, E
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class Mermaid(DirectivePlugin):
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def parse(
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self, block: BlockParser, m: Match, state: BlockState
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) -> dict[str, Any]:
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info = m.groupdict()
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new_state = block.state_cls()
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new_state.process(dedent(info["text"]))
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block.parse(new_state)
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text = HTML(info["text"].strip())
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return {
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"type": "mermaid",
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"text": text,
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"children": [{"type": "text", "text": text}],
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"attrs": {},
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}
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def __call__(self, directive: RSTDirective, md: Markdown) -> None: # type: ignore
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directive.register("mermaid", self.parse)
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if md.renderer.NAME == "html":
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md.renderer.register("mermaid", self._render_mermaid)
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def _render_mermaid(self, renderer: HTMLRenderer, text: str, **attrs):
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return str(E.div(class_="mermaid")(HTML(unescape(text))))
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