update-all-repos

gistfile1.txt

#!/bin/zsh -eu
set -o pipefail

# Main directory full of Git repos
GIT_DIRECTORY=~/work/git

# Branches to ensure (if they exist) are checked out and constantly updated from origin.
# Anything weird I'm doing that could fail to rebase should be in a nicely separated branch / worktree anyway!
# TODO replace this fixed list with pattern filter on remote branches
CANONICAL_SYNC_BRANCHES=(master develop v2.{2..9})

# Are we in one of the individual repos under the main directory?
maybe_in_repo=''
if [[ $PWD == "$GIT_DIRECTORY"* ]]; then
	maybe_in_repo="${${PWD#$GIT_DIRECTORY/}%%/*}"
fi

if [[ -n "$maybe_in_repo" ]]; then
	# Do single repo if in repo
	to_update=($maybe_in_repo/.bare)
else
	# Do everything, by default
	to_update=(*/.bare aaarchive/*/.bare)
fi

# Only do specified repos, if repos are specified
if [[ -n "$*" ]]; then
	to_update=(${^@}"/.bare")
fi

cd "$GIT_DIRECTORY"

# Create stdout-indenter
exec {indent}> >(perl -pe 's[^][    ]')

red_echo() { echo "\e[31m$*\e[0m" }

for repo_master in $to_update; do
	repo_base="$GIT_DIRECTORY/${repo_master%/.bare}"
	[[ -d "$repo_master" ]] && [[ -d "$repo_base" ]] || (echo "??? $repo_master" && continue)
	echo "${repo_master%/.bare}"

	# Fetch updates from remote
	>&$indent 2>&1 (
		git -C "$repo_master" fetch || (red_echo '  FETCH FAIL' && false) || continue
	)

	for branch in $CANONICAL_SYNC_BRANCHES; do
		# See if branch exists
		>/dev/null 2>&1 git -C "$repo_master" rev-parse "origin/$branch" || continue

		echo "  $branch"

		# Check out worktree for branch if not already checked out
		if [[ ! -d "$repo_base/$branch" ]]; then
			>&$indent 2>&1 (
				cd "$repo_master"
				git worktree add "$repo_base/$branch" "$branch"
			)
		fi

		# Update (try-rebase) branch on top of origin version.
		>&$indent 2>&1 (
			cd "$repo_base/$branch"
			chronic git rebase || (git rebase --abort && false) || (red_echo '   UPDATE FAIL' && false) || continue
		)
	done
done