cfg/bin/ensure-config.sh

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#!/usr/bin/env bash
set -euo pipefail
[ ${BASH_VERSINFO[0]:-0} -lt 4 ] && {
echo "Bash too old, update to >=4.0"
exit 1
}
SYSTEM=$(uname -s | tr 'A-Z' 'a-z')
FORCE=0
typeset -A REPOS
REPOS=(
[public]='git@github.com:Luzifer/cfg.git#master'
[secret]='git@github.com:Luzifer/cfg-secret.git#master'
)
# --- OPT parsing ---
while getopts "f" opt; do
case "$opt" in
f)
FORCE=1
;;
esac
done
shift $((OPTIND - 1))
[ "${1:-}" = "--" ] && shift
# --- OPT parsing ---
if [ -e ${HOME}/bin/script_framework.sh ]; then
source ${HOME}/bin/script_framework.sh
else
function step() { echo "$@"; }
function fatal() {
echo "$@"
exit 1
}
fi
function config() {
git --git-dir="${HOME}/.cfg/${repo_name}" --work-tree="${HOME}" $@
}
for repo_name in "${!REPOS[@]}"; do
clone_url=$(echo ${REPOS[$repo_name]} | cut -d '#' -f 1)
branch=$(echo ${REPOS[$repo_name]} | cut -d '#' -f 2)
step "Working on '${repo_name}' (remote: '${clone_url}', branch: '${branch}'..."
# Clone repo if it's not already available
if ! [ -d "${HOME}/.cfg/${repo_name}" ]; then
git clone --bare "${clone_url}" --branch "${branch}" "${HOME}/.cfg/${repo_name}"
fi
# Set basic git options for the repo
config config status.showUntrackedFiles no
# Do not overwrite local changes
if (! config diff --exit-code 2>&1 >/dev/null) && [ ${FORCE} -eq 0 ]; then
error "Repo '${repo_name}' has unsaved changes and force-flag is not set"
continue
fi
# Refresh latest master
config fetch -q origin ${branch} || { fatal "Failed to fetch '${repo_name}'"; }
# Apply latest master
COMMITS_AHEAD=$(config rev-list --left-right --count FETCH_HEAD...HEAD | awk '{ print $2 }')
if [ ${COMMITS_AHEAD} -gt 0 ]; then
echo "Local commits found, trying to rebase..."
config rebase FETCH_HEAD
else
echo "No local commits, resetting to remote master..."
config reset --hard FETCH_HEAD
fi
# Update submodules
config submodule update --init --recursive
done