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dotbare/scripts/fcheckout
2020-07-07 12:01:59 +10:00

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#!/usr/bin/env bash
#
# checkout files/commit/branches using fzf
#
# @params
# Globals
# ${mydir}: current directory of the script, used for imports
# ${action_type}: what type of git commands to use (branch|select|commit|modified)
# ${selected_branch}: selected_branch to switch
# ${selected_files}: selected_files to checkout
# ${selected_commit}: selected commit to checkout
# ${confirm}: confirm status of the user
# Arguments
# -h|--help: show help message
# -s|--select: search all files instead of just the modified files
# -b|--branch: search branch and checkout branch
# -c|--commit: search commit and checkout commit
set -e
set -f
mydir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
source "${mydir}"/../helper/set_variable.sh
source "${mydir}"/../helper/get_confirmation.sh
source "${mydir}"/../helper/git_query.sh
function usage() {
echo -e "Usage: dotbare fcheckout [-h] [-s] [-b] [-c] [-y] ...\n"
echo -e "Select files/commit/branch through fzf and checkout the selected objects."
echo -e "Files: checkout the version in HEAD or in a specific commit (reset files content back to the selected commit)."
echo -e "Branch: switch to the selected branch."
echo -e "Commit: switch to a specific commit.\n"
echo -e "Default: list all modified files and reset selected files back to HEAD.\n"
echo -e "optional arguments:"
echo -e " -h, --help\t\tshow this help message and exit."
echo -e " -s, --select\t\tlist all tracked files and select a commit to checkout the selected files."
echo -e " -b, --branch\t\tlist all branch and checkout/switch the selected branch."
echo -e " -c, --commit\t\tlist all commits and checkout selected commit."
echo -e " -y, --yes\t\tacknowledge all actions that will be taken and skip confirmation."
}
action_type="modified"
selected_files=()
confirm=""
selected_commit=""
selected_branch=""
while [[ "$#" -gt 0 ]]; do
case "$1" in
-s|--select)
action_type="select"
shift
;;
-b|--branch)
action_type="branch"
shift
;;
-c|--commit)
action_type="commit"
shift
;;
-y|--yes)
confirm="y"
shift
;;
-h|--help)
usage
exit 0
;;
*)
echo "Invalid option: $1" >&2
usage
exit 1
;;
esac
done
if [[ "${action_type}" == "branch" ]]; then
# checkout branch
selected_branch=$(get_branch 'select a branch to checkout')
[[ -z "${selected_branch}" ]] && exit 1
git --git-dir="${DOTBARE_DIR}" --work-tree="${DOTBARE_TREE}" checkout "${selected_branch}"
elif [[ "${action_type}" == "commit" ]]; then
# checkout commit
selected_commit=$(get_commit 'select a commit to checkout')
[[ -z "${selected_commit}" ]] && exit 1
git --git-dir="${DOTBARE_DIR}" --work-tree="${DOTBARE_TREE}" checkout "${selected_commit}"
elif [[ "${action_type}" == "modified" ]]; then
# checkout modified file back to version in HEAD
while IFS= read -r line; do
selected_files+=("${line}")
done < <(get_modified_file 'select a file to checkout version in HEAD')
[[ "${#selected_files[@]}" -eq 0 ]] && exit 1
[[ -z "${confirm}" ]] && echo "(dryrun) dotbare checkout --" "${selected_files[@]}"
[[ -z "${confirm}" ]] && confirm=$(get_confirmation "Confirm?")
[[ "${confirm}" != 'y' ]] && exit 1
git --git-dir="${DOTBARE_DIR}" --work-tree="${DOTBARE_TREE}" checkout -- "${selected_files[@]}"
elif [[ "${action_type}" == "select" ]]; then
# checkout selected files to a selected commit
while IFS= read -r line; do
selected_files+=("${line}")
done < <(get_git_file 'select a file to checkout')
[[ "${#selected_files[@]}" -eq 0 ]] && exit 1
# continue select a commit and then checkout the file back to the selected commit
selected_commit=$(get_commit 'select the target commit' "${selected_files[@]}")
[[ -z "${selected_commit}" ]] && exit 1
[[ -z "${confirm}" ]] && echo "(dryrun) dotbare checkout ${selected_commit} --" "${selected_files[@]}"
[[ -z "${confirm}" ]] && confirm=$(get_confirmation "Confirm?")
[[ "${confirm}" != 'y' ]] && exit 0
git --git-dir="${DOTBARE_DIR}" --work-tree="${DOTBARE_TREE}" checkout "${selected_commit}" "${selected_files[@]}"
fi