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

qtver=
ret=0

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

# Guess Qt version
if [[ -z $qtver ]]; then
	for ver in $(seq 5 7); do
		if command -v "qmlimportscanner${ver}" &>/dev/null ||
		   command -v "qmlimportscanner-qt${ver}" &>/dev/null; then
		   qtver="${qtver}${ver}"
		fi
	done
	
	# No qmlimportscanner found - probably building Qt itself,
	# where these deps aren't needed anyway.
	[[ -z ${qtver} ]] && exit 0

	if [[ ${#qtver} -ne 1 ]]; then
		echo "Failed to guess Qt version!" >&2
		exit 1
	fi
fi

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
}

importscanner="qmlimportscanner${qtver}"
command -v "$importscanner" &>/dev/null || importscanner="qmlimportscanner-qt${qtver}"

# 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