60 lines
1 KiB
Bash
60 lines
1 KiB
Bash
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#!/bin/bash
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# SPDX-License-Identifier: GPL-3.0-or-later
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#
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# Copyright (C) 2023-2023 kcgen <kcgen@users.noreply.github.com>
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#
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# A trivial script that extracts previously fetched and tarred
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# subproject content.
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set -euo pipefail
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usage()
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{
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printf "%s\n" "\
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Usage: $0 [TARFILE]
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The tar executable can be optionally overridden by setting
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the TAR environment variables, such as: TAR=gtar"
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}
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setup_tar()
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{
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if [[ -z "${TAR:-}" ]]; then
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if tar --version | grep -q GNU; then
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TAR=tar
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else
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# Fallback to gtar; if that's not found the user
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# will get a verbose command-not-found error.
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TAR=gtar
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fi
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else
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echo "Using TAR=$TAR"
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fi
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if [[ "${OSTYPE:-}" == "msys" ]]; then
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# If not set, tar fails when extracting symlinks
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export MSYS=winsymlinks:lnk
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fi
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}
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main()
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{
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if [[ "${1:-}" == "-h" || "${1:-}" == "--help" ]]; then
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usage
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exit 0
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fi
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if [[ -z "${1:-}" ]]; then
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local tarfile="subprojects.tar"
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else
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local tarfile="$1"
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fi
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setup_tar
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"$TAR" -xf "$tarfile"
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}
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>&2 main "$@"
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