File update_xrdesktop_patch.sh of Package gnome-shell-xrdesktop

#!/bin/bash

# Usage: update_xrdesktop_patch.sh [desired xrdesktop version]
# By default, the version specified in the spec file is used to determine the branch with the xrdesktop patches.

set -euo pipefail

REPO_DIR="repo-gnome-shell"

repogit(){
	git -C "${REPO_DIR}" $@
}

if [ ! -f "gnome-shell.spec" ]; then
	echo "No 'gnome-shell.spec' found. Have you expanded the sources?"
	exit 1
fi

VERSION="$(rpmspec -q --srpm --qf "%{version}" gnome-shell.spec)"

if [ -d "${REPO_DIR}/.git" ]; then
	repogit fetch --all
else
	git clone https://gitlab.freedesktop.org/xrdesktop/gnome-shell "${REPO_DIR}"
	repogit remote add gnome https://gitlab.gnome.org/GNOME/gnome-shell
	repogit fetch gnome
fi

DESIRED_VERSION="${1:-${VERSION}}"
XRDESKTOP_BRANCHES=($(repogit branch -rl "origin/${DESIRED_VERSION}*"))

BRANCH=""

if [ "${#XRDESKTOP_BRANCHES[@]}" -eq 1 ]; then
	BRANCH="${XRDESKTOP_BRANCHES[0]}"
elif [ "${#XRDESKTOP_BRANCHES[@]}" -eq 0 ]; then
	echo "No matching branch found!"
	exit 1
else
	echo -e "\nMultiple matching branches found."
	while [ -z "${BRANCH}" ]; do
		counter=0
		for b in ${XRDESKTOP_BRANCHES[@]}; do
			echo "${counter}. ${b}"
			counter=$((counter+1))
		done
		read -p "Please choose a branch [0-$((${#XRDESKTOP_BRANCHES[@]}-1))]: " branch_number

		if [ 0 -le "${branch_number}" -a "${branch_number}" -lt "${#XRDESKTOP_BRANCHES[@]}" ]; then
			BRANCH="${XRDESKTOP_BRANCHES[${branch_number}]}"
		fi
	done
fi

repogit diff "${VERSION}" "${BRANCH}" -- . ':(exclude)subprojects/gvc' > gnome-shell-xrdesktop.patch