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