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swap-symlink
executable file
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swap-symlink
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#!/bin/bash
# SPDX-FileCopyrightText: 2022 - 2023 sudorook <daemon@nullcodon.com>
#
# SPDX-License-Identifier: GPL-3.0-or-later
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
# for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program. If not, see <https://www.gnu.org/licenses/>.
set -eu
ROOT="$(dirname "${0}")"
source "${ROOT}"/globals
if ! [ -L "${1}" ]; then
show_error "ERROR: ${1@Q} not a symlink. Exiting."
exit 3
fi
if readlink -e "${1}" > /dev/null; then
SYM="${1}"
REF="$(readlink "${SYM}")"
ABSSYM="$(realpath -s "${SYM}")"
ABSREF="$(readlink -f "${SYM}")"
if [[ "${REF::1}" = "/" ]]; then
rm -v "${SYM}"
mv -v "${REF}" "${SYM}"
ln -s "${ABSSYM}" "${REF}"
else
rm -v "${SYM}"
mv -v "${ABSREF}" "${SYM}"
ln -sr "${SYM}" "${ABSREF}"
fi
sync
show_success "Swapped ${SYM@Q} and ${REF@Q}"
fi