lbmk/fetch

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#!/usr/bin/env sh
# SPDX-FileCopyrightText: 2022 Caleb La Grange <thonkpeasant@protonmail.com>
# SPDX-FileCopyrightText: 2022 Ferass El Hafidi <vitali64pmemail@protonmail.com>
# SPDX-FileCopyrightText: 2023 Leah Rowe <leah@libreboot.org>
# SPDX-License-Identifier: GPL-3.0-only
. "include/err.sh"
name=""
revision=""
location=""
url=""
bkup_url=""
tmp_dir=""
depend=""
main()
{
id -u 1>/dev/null 2>/dev/null || \
fail "cannot ascertain user id"
if [ "$(id -u)" = "0" ]; then
fail "running lbmk as root as not permitted"
fi
[ $# -gt 0 ] || fail "no argument given"
[ -z "${1+x}" ] && fail 'main(): name not set'
name=${1}
read_config
verify_config
clone_project
[ "${depend}" = "" ] || ./fetch ${depend} || \
fail "Cannot fetch dependency, ${depend}, for project, ${name}"
rm -Rf "${tmp_dir}" || fail "cannot remove tmpdir, ${tmp_dir}"
}
read_config()
{
awkstr=" /\{.*${name}.*}{/ {flag=1;next} /\}/{flag=0} flag { print }"
while read -r line ; do
set ${line} || fail "read_config: set line"
case ${line} in
rev:*)
revision=${2} ;;
loc:*)
location=${2} ;;
url:*)
url=${2} ;;
bkup_url:*)
bkup_url=${2} ;;
depend:*)
depend=${2} ;;
esac
done << EOF
$(eval "awk '${awkstr}' resources/git/revisions")
EOF
}
verify_config()
{
[ -z "${revision+x}" ] && fail 'verify_config: revision not set'
[ -z "${location+x}" ] && fail 'verify_config: location not set'
[ -z "${url+x}" ] && fail 'verify_config: url not set'
}
clone_project()
{
tmp_dir=$(mktemp -dt "${name}_XXXXX")
git clone ${url} "${tmp_dir}" || git clone ${bkup_url} "${tmp_dir}" || \
fail "clone_project: could not download ${name}"
(
cd "${tmp_dir}" || fail "clone_project: tmpdir not created"
git reset --hard ${revision} || \
fail "clone_project: Cannot reset revision"
)
patch_project
[ ! -d "${location}" ] || \
rm -Rf "${location}" || \
fail "clone_project: Can't remove directory '${location}'"
mv "${tmp_dir}" "${location}" || \
fail "clone_project: could not copy temp file to destination"
}
patch_project()
{
patchdir="resources/${name}/patches"
for patchfile in "${PWD}/${patchdir}"/*.patch ; do
[ -f "${patchfile}" ] || continue
(
cd "${tmp_dir}" || fail "patch_project: tmpdir unavailable"
git am "${patchfile}" || \
fail "patch_project: Cannot patch project: $name"
)
done
}
fail()
{
for x in "${location}" "${tmp_dir}"; do
[ -z "${x}" ] || [ ! -d "${x}" ] || rm -Rf "${location}" || :
done
usage
err "${1}"
}
usage()
{
cat <<- EOF
Usage: ./fetch [name]
Options:
name: Module name as specified in resources/git/revisions
EOF
}
main $@