scripts: add prependlicense.sh, use with go generate

Author: mdlayher

domain.go

@@ -16,6 +16,7 @@
 package qemu
 
 //go:generate stringer -type=Status -output=string.gen.go
+//go:generate ./scripts/prependlicense.sh string.gen.go
 
 import (
 	"encoding/json"

scripts/prependlicense.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+
+# License block to be prepended to file
+read -r -d '' LICENSE <<EndOfLicense
+// Copyright 2016 The go-qemu Authors.
+//
+// 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.
+EndOfLicense
+
+if [ -z "$1" ]; then
+	echo "missing filename argument"
+	echo "usage: prependlicense.sh [filename]"
+	exit 1
+fi
+
+# Prepend license block to file
+echo -e "$LICENSE\n" | cat - $1 > .prependlicense && mv .prependlicense $1