116 lines
2.5 KiB
Text
116 lines
2.5 KiB
Text
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#!/bin/sh
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# Replace the local `dotfiles` repository with a fresh install
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# by re-running the latest `dotfiles-install` taken from the `origin`
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#
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# Refuses to run if there are uncommitted or unpushed changes,
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# unless called with `--force`
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set -eu
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XDG_DATA_HOME="${XDG_DATA_HOME:-$HOME/.local/share}"
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DOTFILES_DIR="${DOTFILES_DIR:-$XDG_DATA_HOME/dotfiles}"
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_force=0
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if [ "$#" -gt 1 ]; then
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echo "Usage: $(basename "$0") [--force]" >&2
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exit 1
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fi
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case "${1:-}" in
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"") ;;
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--force) _force=1 ;;
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*)
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echo "Usage: $(basename "$0") [--force]" >&2
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exit 1
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;;
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esac
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if [ ! -d "$DOTFILES_DIR" ]; then
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echo "" >&2
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echo "The dotfiles are not installed at: $DOTFILES_DIR" >&2
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echo "" >&2
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echo "=> See instructions at https://code.webartifex.de/alexander/dotfiles#installation" >&2
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echo "" >&2
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exit 1
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fi
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_git() {
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git --git-dir="$DOTFILES_DIR" --work-tree="$HOME" "$@"
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}
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# Keep the machine on its current branch (e.g., "desktop")
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branch=$(_git symbolic-ref --short HEAD) || {
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echo "" >&2
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echo "Detached HEAD => Re-run after 'dotfiles checkout <branch>'" >&2
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echo "" >&2
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exit 1
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}
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if [ "$_force" -ne 1 ]; then
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if [ -n "$(_git status --porcelain)" ]; then
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echo "" >&2
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echo "There are uncommitted changes!" >&2
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echo "" >&2
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_git --no-pager diff HEAD --stat >&2
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echo "" >&2
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echo "=> Commit and push them, or re-run with '--force'" >&2
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echo "" >&2
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exit 1
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fi
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if _git rev-parse --verify --quiet "origin/$branch" >/dev/null \
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&& [ -n "$(_git log --oneline "origin/$branch..$branch")" ]; then
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echo "" >&2
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echo "There are unpushed commits!" >&2
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echo "" >&2
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_git --no-pager log --oneline "origin/$branch..$branch" >&2
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echo "" >&2
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echo "=> Push them, or re-run with '--force'" >&2
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echo "" >&2
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exit 1
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fi
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fi
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# Take the latest installer out of the local repository,
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# after fetching from the `origin`
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_git fetch --prune origin
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if ! _git rev-parse --verify --quiet "origin/$branch" >/dev/null; then
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echo "" >&2
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echo "Branch '$branch' does not exist on origin!" >&2
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echo "" >&2
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echo "=> Push it first, or 'dotfiles checkout' one that does" >&2
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echo "" >&2
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exit 1
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fi
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installer_path=$(mktemp)
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trap 'rm -f "$installer_path"' EXIT
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_git show "origin/$branch:.local/bin/dotfiles-install" > "$installer_path"
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DOTFILES_BRANCH="$branch" sh "$installer_path" --force
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