File qml.req of Package qml-autoreqprov

#!/bin/bash
# SPDX-FileCopyrightText: 2020-2021 Fabian Vogt <fabian@ritter-vogt.de>
# SPDX-License-Identifier: GPL-3.0-or-later

set -euo pipefail

qtvers=
ret=0

while [ $# -gt 0 ]; do
	case $1 in
	--qtver)
		qtvers=$2
		shift
		;;
	*)
		echo "Unknown argument $1" >&2
		exit 1
	esac
	shift
done

# Guess Qt version
qtver=
[[ -n ${qtvers} ]] || qtvers="5 6 7"

for ver in ${qtvers}; do
	stat /usr/lib*/qt${ver} &>/dev/null && qtver="${qtver}${ver}"
done

# Zero or more than one version of Qt found. Abort.
if [[ ${#qtver} -ne 1 ]]; then
	echo "Failed to guess Qt version!" >&2
	exit 1
fi

if [[ ${qtver} == 5 ]]; then
	importscanner="qmlimportscanner-qt5"
else
	importscanner="$(qmake${qtver} -query QT_HOST_LIBEXECS)/qmlimportscanner"
fi

command -v "${importscanner}" &>/dev/null || echo "Failed to locate qmlimportscanner"

declare -A dependencies
# foundDependency qt5qmlimport(Module.Uri.42) 69
# In the dependencies array, it sets the version of qt5qmlimport(Module.Uri.42) to 69, if lower
foundDependency() {
	if [ ${dependencies[$1]:=0} -lt $2 ]; then
		dependencies[$1]=$2
	fi
}

# TODO: Get exit status of qmlimportscanner
while read import min; do
	foundDependency "qt${qtver}qmlimport(${import})" "$min"
done < <(grep -vE '/designer/.*\.qml' | xargs -r "$importscanner" -qmlFiles | jq -r '.[] | select(.type == "module") | .name + " " + .version' | gawk 'match($2, /^([0-9]+)\.([0-9]+)$/, ver) { printf "%s.%d %d\n", $1, ver[1], ver[2]; }')

for export in "${!dependencies[@]}"; do
	echo "${export} >= ${dependencies["$export"]}"
done

exit $ret