Add support for {copy, src, dst} to templater

src/rebar_templater.erl

@@ -359,6 +359,17 @@ execute_template([{dir, Name} | Rest], TemplateType, TemplateName, Context,
             ?ABORT("Failed while processing template instruction "
                    "{dir, ~s}: ~p\n", [Name, Reason])
     end;
+execute_template([{copy, Input, Output} | Rest], TemplateType, TemplateName,
+                 Context, Force, ExistingFiles) ->
+    InputName = filename:join(filename:dirname(TemplateName), Input),
+    case rebar_file_utils:cp_r([InputName ++ "/*"], Output) of
+        ok ->
+            execute_template(Rest, TemplateType, TemplateName,
+                             Context, Force, ExistingFiles);
+        {error, Reason} ->
+            ?ABORT("Failed while processing template instruction "
+                   "{dir, ~s, ~s}: ~p\n", [Input, Output, Reason])
+    end;
 execute_template([{chmod, Mod, File} | Rest], TemplateType, TemplateName,
                  Context, Force, ExistingFiles) when is_integer(Mod) ->
     case file:change_mode(File, Mod) of