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void-packages/common/scripts/lint-version-change
2024-03-29 08:12:19 +01:00

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#!/bin/sh
# when $3 is empty, template is read from working directory
template="$1" base_rev="$2" tip_rev="$3"
status=0
die() {
printf '%s\n' "$*" >&2
exit 1
}
if ! [ "$base_rev" ]; then
die "usage: $0 TEMPLATE BASE-REVISION [TIP-REVISION]"
fi
if ! command -v git >/dev/null 2>&1; then
die "neither chroot-git nor git could be found"
fi
scan() {
rx="$1" msg="$2"
template_path=$template
maybe_git=
if [ "$tip_rev" ]; then
template_path="${tip_rev}:${template}"
maybe_git="git"
revspec="[^:]*:"
fi
$maybe_git grep -P -Hn -e "$rx" "$template_path" |
grep -v -P -e "[^:]*:[^:]*:\s*#" |
sed "s/^${revspec}\([^:]*:[^:]*:\)\(.*\)/\1 $msg/"
}
show_template() {
rev="$1"
if [ "$rev" ]; then
git cat-file blob "${rev}:${template}" 2>/dev/null
else
cat "${template}" 2>/dev/null
fi
}
show_template_var() {
rev="$1" var="$2"
(
show_template "$rev"
printf '%s\n' "printf '%s\\n' \"\$${var}\""
) | bash 2>/dev/null
}
revision_reset() {
[ "${revision}" = 1 ] && return
if [ "$prev_version" ]; then
case "$prev_reverts" in
*"$version"_*) return
esac
action=update
else
action=creation
fi
scan "^revision=" "revision should be set to 1 on ${action}"
status=1
}
reverts_on_downgrade() {
[ "$version" ] || return
case "$reverts" in
*"$prev_version"_*) ;;
*)
scan "^version=" "missing reverts= for downgrade $prev_version to $version"
status=1
esac
}
check_revert() {
for vr in $reverts; do
xbps-uhelper cmpver "${version}" "${vr%_*}"
case "$?" in
0 | 1)
scan '^version=' "remove $vr from \$reverts"
status=1
;;
esac
done
for vr in $prev_reverts; do
if ! xbps-uhelper cmpver "$version" "${vr%_*}"; then
continue
fi
if [ $revision -gt "${vr##*_}" ]; then
continue
fi
scan '^revision=' "undo a revert with same revision as before"
status=1
done
}
version_change() {
version="$(show_template_var "$tip_rev" version)"
revision="$(show_template_var "$tip_rev" revision)"
reverts="$(show_template_var "$tip_rev" reverts)"
prev_version="$(show_template_var "$base_rev" version)"
prev_reverts="$(show_template_var "$base_rev" reverts)"
xbps-uhelper cmpver "$version" "$prev_version"
case "$?" in
1) revision_reset;;
-1|255) reverts_on_downgrade;;
esac
check_revert
}
version_change
exit $status