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ex_doc
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0.5.1
ExDoc is a documentation generation tool for Elixir
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lib/ex_doc/markdown/hoedown.ex
defmodule ExDoc.Markdown.Hoedown do
@moduledoc """
ExDoc extension for the Hoedown MarkDown parser
"""
@doc """
Check if the Hoedown MarkDown parser module is available. Otherwise, try to
load the module
"""
def available? do
Code.ensure_loaded?(Markdown)
end
@doc """
Hoedown specific options:
* `:autolink` - defaults to true
* `:fenced_code` - defaults to true
* `:tables` - Enables Markdown Extra style tables, defaults to true
"""
def to_html(text, opts \\ []) do
options =
[autolink: Keyword.get(opts, :autolink, true),
fenced_code: Keyword.get(opts, :fenced_code, true),
tables: Keyword.get(opts, :tables, true)]
text
|> Markdown.to_html(options)
|> pretty_codeblocks()
end
@doc false
# Helper to handle fenced code blocks (```...```) with
# language specification
defp pretty_codeblocks(bin) do
# Hoedown parser puts the prefix "language-" as part of the class value
bin = Regex.replace(~r/<pre><code\s+class=\"language-([^\"]+)\">/,
bin, ~S(<pre><code class="\1">))
bin
end
end