Revert "Safety check before running File.rm_rf! in doc gen (#1707)"

Unfortunately this is generating ExDoc files with mixed entries.

This reverts commit 9766ed7.

lib/ex_doc/formatter/epub.ex

@@ -10,14 +10,9 @@ defmodule ExDoc.Formatter.EPUB do
   """
   @spec run([ExDoc.ModuleNode.t()], [ExDoc.ModuleNode.t()], ExDoc.Config.t()) :: String.t()
   def run(project_nodes, filtered_modules, config) when is_map(config) do
-    parent = config.output
     config = normalize_config(config)
-
-    HTML.setup_output(
-      parent,
-      &cleanup_output_dir(&1, config),
-      &create_output_dir(&1, config)
-    )
+    File.rm_rf!(config.output)
+    File.mkdir_p!(Path.join(config.output, "OEBPS"))
 
     project_nodes =
       HTML.render_all(project_nodes, filtered_modules, ".xhtml", config, highlight_tag: "samp")
@@ -50,16 +45,6 @@ defmodule ExDoc.Formatter.EPUB do
     Path.relative_to_cwd(epub)
   end
 
-  defp create_output_dir(root, config) do
-    File.mkdir_p!(Path.join(config.output, "OEBPS"))
-    File.touch!(Path.join(root, ".build"))
-  end
-
-  defp cleanup_output_dir(docs_root, config) do
-    File.rm_rf!(config.output)
-    create_output_dir(docs_root, config)
-  end
-
   defp normalize_config(config) do
     output =
       config.output

lib/ex_doc/formatter/html.ex

@@ -16,7 +16,7 @@ defmodule ExDoc.Formatter.HTML do
     config = %{config | output: Path.expand(config.output)}
 
     build = Path.join(config.output, ".build")
-    setup_output(config.output, &cleanup_output_dir(&1, config), &create_output_dir(&1, config))
+    output_setup(build, config)
 
     project_nodes = render_all(project_nodes, filtered_modules, ".html", config, [])
     extras = build_extras(config, ".html")
@@ -148,53 +148,18 @@ defmodule ExDoc.Formatter.HTML do
     |> ExDoc.DocAST.highlight(language, opts)
   end
 
-  def setup_output(root, cleanup, create) do
-    safety_path = Path.join(root, ".build")
-
-    cond do
-      File.exists?(safety_path) and File.exists?(root) ->
-        cleanup.(root)
-
-      not File.exists?(root) ->
-        create.(root)
-
-      File.ls!(root) == [] ->
-        add_safety_file(root)
-        :ok
-
-      true ->
-        IO.warn(
-          "ExDoc is outputting to an existing directory. " <>
-            "Beware documentation output may be mixed with other entries"
-        )
-
-        create.(root)
-    end
-  end
-
-  defp create_output_dir(root, _config) do
-    File.mkdir_p!(root)
-    add_safety_file(root)
-  end
-
-  defp add_safety_file(root) do
-    File.touch!(Path.join(root, ".build"))
-  end
-
-  defp cleanup_output_dir(docs_root, config) do
-    build = Path.join(docs_root, ".build")
-
+  defp output_setup(build, config) do
     if File.exists?(build) do
       build
       |> File.read!()
       |> String.split("\n", trim: true)
-      |> Enum.map(&Path.join(docs_root, &1))
+      |> Enum.map(&Path.join(config.output, &1))
       |> Enum.each(&File.rm/1)
 
       File.rm(build)
     else
-      File.rm_rf!(docs_root)
-      create_output_dir(docs_root, config)
+      File.rm_rf!(config.output)
+      File.mkdir_p!(config.output)
     end
   end
 

test/ex_doc/formatter/html/erlang_test.exs

@@ -5,12 +5,6 @@ defmodule ExDoc.Formatter.HTML.ErlangTest do
   @moduletag :otp_eep48
   @moduletag :tmp_dir
 
-  setup %{tmp_dir: tmp_dir} do
-    output = tmp_dir <> "/doc"
-    File.mkdir!(output)
-    File.touch!("#{output}/.build")
-  end
-
   test "smoke test", c do
     erlc(c, :foo, ~S"""
     %% @doc

test/ex_doc/formatter/html/search_data_test.exs

@@ -4,12 +4,6 @@ defmodule ExDoc.Formatter.HTML.SearchDataTest do
 
   @moduletag :tmp_dir
 
-  setup %{tmp_dir: tmp_dir} do
-    output = tmp_dir <> "/doc"
-    File.mkdir!(output)
-    File.touch!("#{output}/.build")
-  end
-
   test "Elixir module", c do
     modules =
       elixirc(c, ~S'''

test/ex_doc/formatter/html_test.exs

@@ -6,12 +6,6 @@ defmodule ExDoc.Formatter.HTMLTest do
 
   @moduletag :tmp_dir
 
-  setup %{tmp_dir: tmp_dir} do
-    output = tmp_dir <> "/html"
-    File.mkdir_p!(output)
-    File.touch!(output <> "/.build")
-  end
-
   defp read_wildcard!(path) do
     [file] = Path.wildcard(path)
     File.read!(file)

test/test_helper.exs

@@ -22,10 +22,6 @@ defmodule TestHelper do
   def elixirc(context, filename \\ "nofile", code) do
     dir = context.tmp_dir
 
-    output_dir = context.tmp_dir <> "/html"
-    File.mkdir_p!(output_dir)
-    File.write!(output_dir <> "/.build", "")
-
     src_path = Path.join([dir, filename])
     src_path |> Path.dirname() |> File.mkdir_p!()
     File.write!(src_path, code)