Golang vendored source generator

golang-vendor-sources.sh

#!/bin/bash
set -e

if [ -z "$1" ] || [ -z "$2" ]; then
    echo "Usage: $0 GIT_URL GIT_TAG"
    echo "Example: $0 https://github.com/go-gitea/gitea.git v1.12.1"
    exit 1
fi

REPO_URL="$1"
REPO_NAME="`basename $REPO_URL | cut -d . -f 1`"
NAME="$REPO_NAME-sources-$2"

rm -rf $NAME
git clone --branch $2 --depth=1 $REPO_URL $NAME

pushd $NAME
GO111MODULE=on go mod vendor
popd

rm -f $NAME.tar.gz
tar --exclude $NAME/.git -cf - $NAME | pigz -9 - > $NAME.tar.gz
rm -rf $NAME