update/project/*: merge to update/project/trees

Just one script.

Just one!

Well, two, but the 2nd one already existed:
logic in update/project/trees and
update/project/repo was merged into
include/git.sh and update/project/build
was renamed to update/project/trees; an -f
option was added, which calls the functions
under git.sh

so git clones are now handled by the main build
script (for handling makefiles and defconfigs)
but the logic there is a stub, where git.sh
does all the actual heavy lifting

this cuts the file count down by two, and reduces
sloccount a reasonable amount because much of
the logic already exists in the build script, when
it comes to handling targets. git.sh was adjusted
to integrate with this, rather than act standalone

Signed-off-by: Leah Rowe <leah@libreboot.org>

1 files changed, 117 insertions, 11 deletions

diff --git a/include/git.sh b/include/git.sh
index 2bf3b761..7f926c28 100755
--- a/include/git.sh
+++ b/include/git.sh
@@ -1,15 +1,123 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
-# SPDX-FileCopyrightText: 2023 Leah Rowe <leah@libreboot.org>
+# 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}"
-	_fail="${3}"
 	(
-	cd "${sdir}" || "${_fail}" "cannot cd to ${sdir}"
+	x_ cd "${sdir}"
 	git reset --hard ${_rev} || \
-	    "${_fail}" "cannot git reset ${sdir} <- ${rev}"
+	    err  "cannot git reset ${sdir} <- ${rev}"
 	)
 }
 
@@ -17,23 +125,21 @@ git_am_patches()
 {
 	sdir="${1}" # assumed to be absolute path
 	patchdir="${2}" # ditto
-	_fail="${3}"
 	(
-	cd "${sdir}" || \
-	    "${_fail}" "apply_patches: !cd \"${sdir}\""
+	x_ cd "${sdir}"
 	for patch in "${patchdir}/"*; do
 		[ -L "${patch}" ] && continue
 		[ -f "${patch}" ] || continue
 		if ! git am "${patch}"; then
-			git am --abort || "${_fail}" "${sdir}: !git am --abort"
-			"${_fail}" "!git am ${patch} -> ${sdir}"
+			git am --abort || err  "${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}" "${_fail}" || \
-			    "${_fail}" "apply_patches: !${sdir}/ ${patches}/"
+			git_am_patches "${sdir}" "${patches}" err  || \
+			    err  "apply_patches: !${sdir}/ ${patches}/"
 	done
 }