54 lines
1.7 KiB
Dart
54 lines
1.7 KiB
Dart
/*
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* Copyright (c) 2024-2025 Fabian Freund.
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*
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* This file is part of WebLibre
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* (see https://weblibre.eu).
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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import 'package:universal_io/io.dart';
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final _domainRegex = RegExp(r'\.[a-zA-Z]{2,}$');
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const _supportedSchemes = {'https', 'http', 'ftp', 'file', 'content', 'about'};
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Uri? tryParseUrl(String? input, {bool eagerParsing = false}) {
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if (input != null) {
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var uri = Uri.tryParse(input);
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if (uri != null) {
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if (uri.authority.isEmpty && eagerParsing) {
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if (uri.pathSegments.isNotEmpty) {
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if (_domainRegex.hasMatch(uri.pathSegments.first)) {
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uri = Uri.tryParse('https://$input');
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} else if (InternetAddress.tryParse(uri.pathSegments.first) != null) {
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uri = Uri.tryParse('https://$input');
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}
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}
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}
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if (uri != null) {
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if (uri.isScheme('about')) {
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return uri;
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}
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if (uri.authority.isNotEmpty) {
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if (_supportedSchemes.contains(uri.scheme) || !uri.hasScheme) {
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return uri;
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}
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}
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}
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}
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}
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return null;
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}
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