Imported Console from I-MIC FPS

lib/cyberarm_engine/console/commands/help_command.rb

@@ -0,0 +1,43 @@
+# frozen_string_literal: true
+
+module CyberarmEngine
+  class Console
+    class HelpCommand < CyberarmEngine::Console::Command
+      def group
+        :global
+      end
+
+      def command
+        :help
+      end
+
+      def handle(arguments, console)
+        console.stdin(usage(arguments.first))
+      end
+
+      def autocomplete(console)
+        split = console.text_input.text.split(" ")
+        if !console.text_input.text.start_with?(" ") && split.size == 2
+          list = console.abbrev_search(Command.list_commands.map { |cmd| cmd.command.to_s }, split.last)
+          if list.size == 1
+            console.text_input.text = "#{split.first} #{list.first} "
+          elsif list.size > 1
+            console.stdin(list.map { |cmd| Style.highlight(cmd) }.join(", "))
+          end
+        end
+      end
+
+      def usage(command = nil)
+        if command
+          if cmd = Command.find(command)
+            cmd.usage
+          else
+            "#{Style.error(command)} is not a command"
+          end
+        else
+          "Available commands:\n#{Command.list_commands.map { |cmd| Style.highlight(cmd.command).to_s }.join(', ')}"
+        end
+      end
+    end
+  end
+end