63 lines
2.1 KiB
Dart
63 lines
2.1 KiB
Dart
// Copyright (C) 2022 WYATT GROUP
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// Please see the AUTHORS file for details.
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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 General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// 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 General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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import 'dart:convert';
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/// Defines some convert functions.
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abstract class Convert {
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/// Converts a list of bytes to a hex string.
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///
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/// If [upperCase] is `true`, the hex string will be in uppercase.
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static String toHex(List<int> bytes, {bool upperCase = false}) {
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final buffer = StringBuffer();
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for (final int part in bytes) {
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if (part & 0xff != part) {
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throw const FormatException('Non-byte integer detected');
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}
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buffer.write('${part < 16 ? '0' : ''}${part.toRadixString(16)}');
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}
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if (upperCase) {
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return buffer.toString().toUpperCase();
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} else {
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return buffer.toString();
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}
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}
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/// Converts a map to a query string.
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///
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/// If [encoding] is `null`, the default encoding is `utf8`.
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///
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/// For example, the map `{a: 1, b: 2}` will be converted to `a=1&b=2`.
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static String mapToQuery(Map<String, String> map, {Encoding? encoding}) {
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final pairs = <List<String>>[];
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map.forEach(
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(key, value) => pairs.add([
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Uri.encodeQueryComponent(key, encoding: encoding ?? utf8),
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Uri.encodeQueryComponent(value, encoding: encoding ?? utf8),
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]),
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);
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return pairs.map((pair) => '${pair[0]}=${pair[1]}').join('&');
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}
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}
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extension UriX on Uri {
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/// Returns a new [Uri] by appending the given [path] to this [Uri].
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Uri operator +(String path) {
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final thisPath = toString();
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return Uri.parse(thisPath + path);
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}
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}
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