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pow_assent

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Multi-provider support for Pow

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pow_assent lib ex_doc markdown.ex
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lib/ex_doc/markdown.ex 

if Code.ensure_loaded?(ExDoc.Markdown.Earmark) do

  # Due to how relative links works in ExDoc, it's necessary for us to use a

  # custom markdown parser to ensure that paths will work in generated docs.

  #

  # Ref: https://github.com/elixir-lang/ex_doc/issues/889



defmodule ExDoc.PowAssent.Markdown do

  @moduledoc false



  alias ExDoc.Markdown.Earmark



  @behaviour ExDoc.Markdown



  defdelegate assets(arg), to: Earmark

  defdelegate before_closing_head_tag(arg), to: Earmark

  defdelegate before_closing_body_tag(arg), to: Earmark

  defdelegate configure(arg), to: Earmark

  defdelegate available?(), to: Earmark



  def to_html(text, opts) do

    config     = Mix.Project.config()[:docs]

    source_url = config[:source_url] <> "/" <> source_ref_pattern(config[:source_url], config[:source_ref])



    text

    |> convert_relative_docs_url(source_url)

    |> Earmark.to_html(opts)

  end



  defp source_ref_pattern("https://github.com/" <> _rest, ref), do: "blob/#{ref}"



  @markdown_regex ~r/(\[[\S ]*\]\()([\S]*?)(\.md|\.ex|\.exs)([\S]*?\))/



  defp convert_relative_docs_url(text, source_url) do

    Regex.replace(@markdown_regex, text, fn

      _, arg1, "http" <> path, extension, arg3 -> "#{arg1}http#{path}#{extension}#{arg3}"

      _, arg1, path, ".md", arg3 -> "#{arg1}#{convert_to_docs_html_url(path)}.html#{arg3}"

      _, arg1, path, extension, arg3 when extension in [".ex", ".exs"] -> "#{arg1}#{convert_to_source_url(path, extension, source_url)}#{arg3}"

    end)

  end



  defp convert_to_docs_html_url("../README"), do: "README"

  defp convert_to_docs_html_url("guides/" <> guide), do: guide

  defp convert_to_docs_html_url(path), do: path



  defp convert_to_source_url("lib/" <> path, extension, source_url), do: source_url <> "/lib/" <> path <> extension

end

end