File get_from_git.sh of Package ceres-solver

#!/bin/bash

if (( $# != 4 )); then
	echo "Usage: $0 <CLONE_NAME> <CLONE_REPO> <LATEST_RELEASE> <BRANCH>" >&2
	exit 1
fi

CLONE_NAME="$1"
CLONE_REPO="$2"
LATEST_RELEASE="$3"
BRANCH="$4"

if [ -d $CLONE_NAME/.git ]; then
	cd $CLONE_NAME
	git pull
	cd ..
else
	set -e
	git clone https://github.com/$CLONE_REPO/$CLONE_NAME.git $CLONE_NAME
	set +e
fi

TOPDIR=$(pwd)
osc rm -f $CLONE_NAME-*.tar.xz || true
cd $CLONE_NAME
git config tar.tar.xz.command "xz -c"
LINE=$(git show --format=format:"%h %ai"|head -n 1)
set -- $LINE
REV=$1
DATE=$2
VER=${DATE//-/}
set -e
echo "Creating git archive for $CLONE_NAME ...."
git archive --format=tar.xz --prefix=$CLONE_NAME-${LATEST_RELEASE}+${VER}.${REV}/ -o $TOPDIR/$CLONE_NAME-${LATEST_RELEASE}+${VER}.${REV}.tar.xz $BRANCH
cd $TOPDIR
echo $VER
echo $REV
osc add $CLONE_NAME-${LATEST_RELEASE}+${VER}.${REV}.tar.xz
sed -i "s/^Version:.*/Version:        ${LATEST_RELEASE}+${VER}.${REV}/" $CLONE_NAME.spec
osc vc -m "Update to version $REV ($DATE):"