76 lines
1.5 KiB
Bash
Executable File
76 lines
1.5 KiB
Bash
Executable File
#!/bin/bash
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set -euo pipefail
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IFS=$'\n'
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if [[ $# -lt 3 ]]; then
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echo "Usage: $0 <workdir> <leader> <follower...>"
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exit 1
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fi
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cd "$1"
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leader="$2"
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shift 2
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followers=( "$@" )
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echo "Working directory: $PWD"
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echo "Leader remote: $leader"
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echo "Follower remotes: ${followers[*]}" | tr '\n' ' '
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echo; echo
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torify git fetch --prune --multiple "$leader"
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git fetch --prune --multiple "${followers[@]}"
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echo
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echo "Leader remote information:"
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git remote show -n "$leader"
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echo
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echo "Follower remotes information:"
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git remote show -n "${followers[@]}"
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echo
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branches=( $(git show-ref | sed -n 's| refs/remotes/'"$leader"'/|\t|p') )
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echo -e "${#branches[*]} branches at leader:"
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echo "${branches[*]}"
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IFS=$'\t'
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errors=( )
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error() {
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echo "XXX $1" >&2
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errors[${#errors[*]}]="$1"
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}
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for branchspec in "${branches[@]}"; do
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set $branchspec
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leader_sha="$1"
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branch="$2"
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for remote in "${followers[@]}"; do
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echo
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echo "Updating $remote/$branch"
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# Prepare state to push
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follower_ref="refs/remotes/$remote/$branch"
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if ! git show-ref --verify --quiet "$follower_ref"; then
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echo "Branch doesn't exist yet at remote, creating"
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git reset --hard "$leader_sha" --
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else
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echo "Branch existed at remote, updating"
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git reset --hard "$follower_ref" --
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git merge --ff-only "$leader_sha" || { error "$remote $branch: FF not possible"; continue; }
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fi
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git push "$remote" "+HEAD:$branch" || { error "$remote $branch: failed to push"; continue; }
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done
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done
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if [[ "${#errors[*]}" -ge 0 ]]; then
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echo "Errors:"
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echo "${errors[@]}"
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else
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echo "No errors."
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fi
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