lbmk/include/git.sh

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# SPDX-License-Identifier: GPL-3.0-or-later
# SPDX-FileCopyrightText: 2020,2021,2023 Leah Rowe <leah@libreboot.org>
# SPDX-FileCopyrightText: 2022 Caleb La Grange <thonkpeasant@protonmail.com>
# This file is only used by update/project/trees
eval "$(setvars "" _target rev _xm)"
eval "$(setvars "" loc url bkup_url depend)"
tmp_git_dir="${PWD}/tmp/gitclone"
fetch_project_trees()
{
_target="${target}"
[ -d "src/${project}/${project}" ] || fetch_from_upstream
fetch_config
[ -z "${rev}" ] && err "fetch_project_trees $target: undefined rev"
[ -d "src/${project}/${tree}" ] && \
printf "download/%s %s (%s): exists\n" \
"${project}" "${tree}" "${_target}" 1>&2 && \
return 1
prepare_new_tree
}
fetch_from_upstream()
{
[ -d "src/${project}/${project}" ] && return 0
x_ mkdir -p "src/${project}"
x_ fetch_project_repo "${project}"
}
fetch_config()
{
x_ rm -f "${cfgsdir}/"*/seen
while true; do
eval "$(setvars "" rev tree)"
_xm="fetch_config ${project}/${_target}"
load_target_config "${_target}"
[ "${_target}" != "${tree}" ] && _target="${tree}" && continue
break
done
}
load_target_config()
{
[ -f "${cfgsdir}/${1}/target.cfg" ] || \
err "${_xm} check: target.cfg does not exist"
[ -f "${cfgsdir}/${1}/seen" ] && \
err "${_xm} check: infinite loop in tree definitions"
. "${cfgsdir}/${1}/target.cfg" || \
err "load_target_config ${cfgsdir}/${1}: cannot load config"
x_ touch "${cfgsdir}/${1}/seen"
}
prepare_new_tree()
{
printf "Creating %s tree %s (%s)\n" "${project}" "${tree}" "${_target}"
x_ cp -R "src/${project}/${project}" "src/${project}/${tree}"
x_ git_reset_rev "src/${project}/${tree}" "${rev}"
(
x_ cd "src/${project}/${tree}"
git submodule update --init --checkout || \
err "prepare_new_tree ${project}/${tree}: can't update git modules"
)
git_am_patches "${PWD}/src/${project}/${tree}" \
"${PWD}/${cfgsdir}/${tree}/patches"
}
fetch_project_repo()
{
scan_config "${project}" "config/git" "err"
verify_config
clone_project
[ "${depend}" = "" ] || for d in ${depend} ; do
x_ ./update project trees -f ${d}
done
x_ rm -Rf "${tmp_git_dir}"
}
verify_config()
{
[ -z "${rev+x}" ] && err 'verify_config: rev not set'
[ -z "${loc+x}" ] && err 'verify_config: loc not set'
[ -z "${url+x}" ] && err 'verify_config: url not set'
return 0
}
clone_project()
{
x_ rm -Rf "${tmp_git_dir}"
x_ mkdir -p "${tmp_git_dir%/*}"
loc="${loc#src/}"
loc="src/${loc}"
git clone ${url} "${tmp_git_dir}" || \
git clone ${bkup_url} "${tmp_git_dir}" || \
err "clone_project: could not download ${project}"
git_reset_rev "${tmp_git_dir}" "${rev}" || \
err "clone_project ${loc}/: cannot reset <- ${rev}"
git_am_patches "${tmp_git_dir}" "${PWD}/config/${project}/patches" || \
err "clone_project ${loc}/: cannot apply patches"
x_ rm -Rf "${loc}"
[ "${loc}" = "${loc%/*}" ] || x_ mkdir -p ${loc%/*}
x_ mv "${tmp_git_dir}" "${loc}"
}
git_reset_rev()
{
sdir="${1}"
_rev="${2}"
(
x_ cd "${sdir}"
git reset --hard ${_rev} || \
err "cannot git reset ${sdir} <- ${rev}"
)
}
git_am_patches()
{
sdir="${1}" # assumed to be absolute path
patchdir="${2}" # ditto
(
x_ cd "${sdir}"
for patch in "${patchdir}/"*; do
[ -L "${patch}" ] && continue
[ -f "${patch}" ] || continue
if ! git am "${patch}"; then
git am --abort || err "${sdir}: !git am --abort"
err "!git am ${patch} -> ${sdir}"
fi
done
)
for patches in "${patchdir}/"*; do
[ -L "${patches}" ] && continue
[ ! -d "${patches}" ] || \
git_am_patches "${sdir}" "${patches}" err || \
err "apply_patches: !${sdir}/ ${patches}/"
done
}