feat: Add support for Lua files

autogen.sh

@@ -23,7 +23,7 @@
 #   autogen.sh file.js
 #   autogen.sh file.py
 
-# If we're runnig via Bazel, find the source files via $TEST_SRCDIR;
+# If we're running via Bazel, find the source files via $TEST_SRCDIR;
 # otherwise, default to dir of current file and search relative to that.
 if [ -n "${TEST_SRCDIR:-}" ]; then
   declare -r SRCDIR="${TEST_SRCDIR}/${TEST_WORKSPACE}"
@@ -356,7 +356,7 @@ function autogenForFile() {
       printFileCommentTemplate "%"
       ;;
 
-    *.hs)
+    *.hs | *.lua)
       printLicenseNonHashComment "--"
       printFileCommentTemplate "--"
       ;;

tests/testdata/lua-separator.in

@@ -0,0 +1 @@
+--separator file.lua

tests/testdata/lua-separator.out

@@ -0,0 +1,18 @@
+-- Copyright 2014 Google LLC
+--
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
+--
+--      http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+--
+--------------------------------------------------------------------------------
+--
+-- TODO: High-level file comment.
+

tests/testdata/lua.in

@@ -0,0 +1 @@
+file.lua

tests/testdata/lua.out

@@ -0,0 +1,16 @@
+-- Copyright 2014 Google LLC
+--
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
+--
+--      http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+
+-- TODO: High-level file comment.
+