54 lines
1.1 KiB
Elixir
54 lines
1.1 KiB
Elixir
defmodule SloaneSH.Markdown do
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@moduledoc """
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Markdown parsing using `Earmark` and `Earmark.Parser`
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"""
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require Logger
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use TypedStruct
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alias SloaneSH.Context
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alias __MODULE__
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typedstruct do
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field :attrs, map(), default: %{}
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field :html, String.t(), default: ""
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end
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def transform(%Context{} = ctx, data) when is_binary(data) do
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data
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|> parse_attrs(ctx)
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|> parse_markdown(ctx)
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end
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defp parse_attrs("+++" <> rest, _ctx) do
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[toml, body] = String.split(rest, ["+++\n", "+++\r\n"], parts: 2)
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with {:ok, attrs} <- Toml.decode(toml, keys: :atoms) do
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{:ok, attrs, body}
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end
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end
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defp parse_attrs(body, _ctx) do
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{:ok, %{}, body}
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end
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defp parse_markdown({:ok, attrs, body}, _ctx) do
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with {:ok, html, msgs} <- Earmark.as_html(body) do
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for msg <- msgs, do: Logger.warning(msg)
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{:ok,
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%Markdown{
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attrs: attrs,
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html: html
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}}
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else
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{:error, _, msgs} ->
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for msg <- msgs, do: Logger.error(msg)
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:error
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_ ->
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:error
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end
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end
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defp parse_markdown(other, _ctx), do: other
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end
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