50 lines
1.5 KiB
Dart
50 lines
1.5 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:nullability/nullability.dart';
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import 'package:weblibre/utils/uri_parser.dart' as uri_parser;
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String? validateUrl(
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String? value, {
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required bool eagerParsing,
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bool requireAuthority = true,
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bool onlyHttpProtocol = false,
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bool required = true,
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}) {
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if (value.isEmpty) {
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if (required) {
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return 'URL must be provided';
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} else {
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return null;
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}
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}
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if (uri_parser.tryParseUrl(value, eagerParsing: eagerParsing)
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case final Uri url) {
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if (!requireAuthority || url.authority.isNotEmpty) {
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if (!onlyHttpProtocol ||
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(url.isScheme('https') || url.isScheme('http'))) {
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return null;
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}
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}
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}
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return 'Inavlid URL';
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}
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