slogsdon/offline_docs.exs

## offline_docs.exs
defmodule OfflineDocs do
  def parse_dep({dep, constraint}) when constraint |> is_binary, do: parse_dep({dep, constraint, []})
  def parse_dep({dep, options}) when options |> is_list, do: parse_dep({dep, "", []})
  def parse_dep({dep, _contraint, options}) do
    if options[:only] == nil or options[:only] == Mix.env do
      [dep: dep]
    else
      nil
    end
  end

  def add_options(dependency) do
    dep = dependency[:dep]
    opts = default_opts
           |> Keyword.update!(:output, &(&1 <> "#{dep}"))
           |> Keyword.update!(:source_root, &(&1 <> "#{dep}"))
           |> Keyword.update!(:source_beam, &(&1 <> "#{Mix.env}/lib/#{dep}/ebin"))
    dependency
    |> Keyword.put(:opts, opts)
  end

  def generate_docs(dep) do
    ExDoc.generate_docs("#{dep[:dep]}", "", dep[:opts])
  end

  def generate_index(deps) do
    links = deps
            |> Enum.map(fn dep ->
              "<a href=\"#{dep[:dep]}/index.html\">#{dep[:dep]}</a><br />"
            end)
            |> Enum.join("")
    File.write! "docs/index.html", [
      "<doctype html><html><body>",
      links,
      "</body></html>"
    ]
    deps
  end

  def default_opts do
    [output:      "docs/",
     source_root: "deps/",
     source_beam: "_build/",
     homepage_url: "",
     main:        "overview"]
  end
end

Mix.Project.config
|> Keyword.get(:deps)
|> Enum.map(&OfflineDocs.parse_dep/1)
|> Enum.filter(&(&1 != nil))
|> Enum.map(&OfflineDocs.add_options/1)
|> OfflineDocs.generate_index
|> Enum.map(&OfflineDocs.generate_docs/1)
	defmodule OfflineDocs do
	def parse_dep({dep, constraint}) when constraint \|> is_binary, do: parse_dep({dep, constraint, []})
	def parse_dep({dep, options}) when options \|> is_list, do: parse_dep({dep, "", []})
	def parse_dep({dep, _contraint, options}) do
	if options[:only] == nil or options[:only] == Mix.env do
	[dep: dep]
	else
	nil
	end
	end

	def add_options(dependency) do
	dep = dependency[:dep]
	opts = default_opts
	\|> Keyword.update!(:output, &(&1 <> "#{dep}"))
	\|> Keyword.update!(:source_root, &(&1 <> "#{dep}"))
	\|> Keyword.update!(:source_beam, &(&1 <> "#{Mix.env}/lib/#{dep}/ebin"))
	dependency
	\|> Keyword.put(:opts, opts)
	end

	def generate_docs(dep) do
	ExDoc.generate_docs("#{dep[:dep]}", "", dep[:opts])
	end

	def generate_index(deps) do
	links = deps
	\|> Enum.map(fn dep ->
	"<a href=\"#{dep[:dep]}/index.html\">#{dep[:dep]}</a><br />"
	end)
	\|> Enum.join("")
	File.write! "docs/index.html", [
	"<doctype html><html><body>",
	links,
	"</body></html>"
	]
	deps
	end

	def default_opts do
	[output: "docs/",
	source_root: "deps/",
	source_beam: "_build/",
	homepage_url: "",
	main: "overview"]
	end
	end

	Mix.Project.config
	\|> Keyword.get(:deps)
	\|> Enum.map(&OfflineDocs.parse_dep/1)
	\|> Enum.filter(&(&1 != nil))
	\|> Enum.map(&OfflineDocs.add_options/1)
	\|> OfflineDocs.generate_index
	\|> Enum.map(&OfflineDocs.generate_docs/1)