Add helper scripts

Makefile

@@ -59,6 +59,9 @@ build: gendoc
 gendoc:
 	@sh build/gendoc.sh
 
+gencopyright:
+	@sh scripts/gencopyright.sh pkg cmd
+
 test:
 	@for PKG in $$( $(PKGS) | grep "$(filter-out $@,$(MAKECMDGOALS))" ); do \
 		echo $$PKG; \

scripts/copyright.txt

@@ -0,0 +1,16 @@
+/*
+Copyright 2019 Yunion
+
+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.
+*/
+

scripts/gencopyright.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+
+set -e
+
+pushd $(dirname $BASH_SOURCE) > /dev/null
+ROOT_DIR=$(cd .. && pwd -P)
+popd > /dev/null
+
+COPYRIGHT_TXT=$ROOT_DIR/scripts/copyright.txt
+
+LINECNT=$(wc -l $COPYRIGHT_TXT | awk '{print $1}')
+
+function patch() {
+    if ! (head -n $LINECNT $1 | diff -q $COPYRIGHT_TXT - > /dev/null); then
+        echo "patch $1"
+        OUT=$(mktemp) || { echo "Failed to create temp file"; exit 1; }
+        cat $COPYRIGHT_TXT > $OUT
+        cat $1 >> $OUT
+        mv $OUT $1
+    fi
+}
+
+for top in $@
+do
+    for f in $(find $top -iname "*.go")
+    do
+        patch $f
+    done
+done