Add 'short' output format

lib/credo/cli/command/suggest/output/default.ex

@@ -31,6 +31,8 @@ defmodule Credo.CLI.Command.Suggest.Output.Default do
   @indent 8
 
   @doc "Called before the analysis is run."
+  def print_before_info(_source_files, %Execution{format: "short"}), do: nil
+
   def print_before_info(source_files, exec) do
     case Enum.count(source_files) do
       0 ->
@@ -54,22 +56,29 @@ defmodule Credo.CLI.Command.Suggest.Output.Default do
 
   @doc "Called after the analysis has run."
   def print_after_info(source_files, exec, time_load, time_run) do
-    term_width = Output.term_columns()
+    print_issue_list_by_category(source_files, exec, time_load, time_run)
+    print_summary(source_files, exec, time_load, time_run)
+  end
 
-    issues = Execution.get_issues(exec)
+  defp print_issue_list_by_category(
+         _source_files,
+         %Execution{format: "short"},
+         _time_load,
+         _time_run
+       ),
+       do: nil
 
-    categories =
-      issues
-      |> Enum.map(& &1.category)
-      |> Enum.uniq()
+  defp print_issue_list_by_category(source_files, exec, _time_load, _time_run) do
+    term_width = Output.term_columns()
+    source_file_map = Enum.into(source_files, %{}, &{&1.filename, &1})
+    issues = Execution.get_issues(exec)
+    categories = issues |> Enum.map(& &1.category) |> Enum.uniq()
 
     issue_map =
       Enum.into(categories, %{}, fn category ->
         {category, issues |> Enum.filter(&(&1.category == category))}
       end)
 
-    source_file_map = Enum.into(source_files, %{}, &{&1.filename, &1})
-
     categories
     |> Sorter.ensure(@category_starting_order, @category_ending_order)
     |> Enum.each(fn category ->
@@ -81,9 +90,10 @@ defmodule Credo.CLI.Command.Suggest.Output.Default do
         term_width
       )
     end)
+  end
 
-    source_files
-    |> Summary.print(exec, time_load, time_run)
+  defp print_summary(source_files, exec, time_load, time_run) do
+    Summary.print(source_files, exec, time_load, time_run)
   end
 
   defp print_issues_for_category(

lib/credo/cli/output/summary.ex

@@ -36,13 +36,11 @@ defmodule Credo.CLI.Output.Summary do
     source_file_count = exec |> Execution.get_source_files() |> Enum.count()
     checks_count = count_checks(exec)
 
-    UI.puts()
-    UI.puts([:faint, @cry_for_help])
-    UI.puts()
+    print_cry_for_help(exec)
+
     UI.puts([:faint, format_time_spent(checks_count, source_file_count, time_load, time_run)])
 
     UI.puts(summary_parts(source_files, issues))
-    UI.puts()
 
     print_priority_hint(exec)
     print_first_run_hint(exec)
@@ -54,21 +52,39 @@ defmodule Credo.CLI.Output.Summary do
 
   defp print_first_run_hint(exec), do: exec
 
+  defp print_cry_for_help(%Execution{format: "short"}) do
+    nil
+  end
+
+  defp print_cry_for_help(_exec) do
+    UI.puts()
+    UI.puts([:faint, @cry_for_help])
+    UI.puts()
+  end
+
   defp count_checks(exec) do
     {result, _only_matching, _ignore_matching} = Execution.checks(exec)
 
     Enum.count(result)
   end
 
+  defp print_priority_hint(%Execution{format: "short"}) do
+    nil
+  end
+
   defp print_priority_hint(%Execution{min_priority: min_priority})
        when min_priority >= 0 do
+    UI.puts()
+
     UI.puts([
       :faint,
       "Showing priority issues: ↑ ↗ →  (use `mix credo explain` to explain issues, `mix credo --help` for options)."
     ])
   end
 
   defp print_priority_hint(_) do
+    UI.puts()
+
     UI.puts([
       :faint,
       "Use `mix credo explain` to explain issues, `mix credo --help` for options."