fetch_trees

#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# Copyright IBM Corp. 2008,2025
#

tools_dir=$(dirname "$0")
. "$tools_dir/common.sh" ''
. "$tools_dir/check_dups.sh"

if [ "$1" = '-n' ]; then
	shift
	last=$(tail -n1 "$SHA1_FILE" | cut -f1 -d"$_TAB")
	start_from=$(get_branches | sed -n '/^'"$last"'$/{n;p;}')
	if [ -z "$start_from" ]; then
		exit 0
	fi
fi

if [ "$1" = '-s' ]; then
	shift
	start_from="$1"
	if [ -z "$start_from" ]; then
		printf '-s requires a start tree\n' 1>&2
		exit 1
	fi
	shift
fi

# shellcheck disable=SC2317
fetch_git()
{
	local name="$1" branch="$2" old_sha="$3" new_sha

	if ! new_sha=$(git ls-remote "$name" "refs/heads/$branch") ||
	   [ -z "$new_sha" ]; then
		printf '%s: Could not fetch %s branch %s\n' 'fetch_git' "$name" "$branch" >&2
		printf '%s\n' "$old_sha"
		return
	fi
	new_sha="${new_sha%%"${_TAB}"*}"
	if [ "$new_sha" = "$old_sha" ]; then
		printf '%s\n' "$old_sha"
		return
	fi
	if git fetch "$name"; then
		git rev-parse --verify "$name/$branch"
	else
		printf '%s\n' "$old_sha"
	fi
}

trees="$*"
if ! [ "$trees" ]; then
	trees=$(get_branches)
fi

for name in $trees; do
	if [ -n "$start_from" ]; then
		if [ "$name" = "$start_from" ]; then
			start_from=''
		else
			continue
		fi
	fi

	type=$(get_type "$name")
	if ! [ "$type" ]; then
		printf '%s: unknown tree\n' "$name" 1>&2
		continue
	fi
	if ! [ "$type" = 'git' ]; then
		continue
	fi

	if [ "$(get_url "$name")" = 'linux-next' ]; then
		continue
	fi

	printf '%s\n' "$name"

	branch=$(get_remote_branch "$name")
	old_sha=$(git rev-parse --quiet --verify "$name/$branch")
	new_sha=$(fetch_git "$name" "$branch" "$old_sha")

	check_dups "$name" origin/master "$new_sha"
	if ! [ "$new_sha" = "$old_sha" ]; then
		"$tools_dir"/check_commits "$name" ^origin/master "$old_sha..$new_sha"
	fi
done

exit 0