120 lines
4.3 KiB
C++
120 lines
4.3 KiB
C++
// SPDX-License-Identifier: GPL-3.0-only
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/*
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* Prism Launcher - Minecraft Launcher
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* Copyright (C) 2022 Sefa Eyeoglu <contact@scrumplex.net>
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* Copyright (C) 2023 flowln <flowlnlnln@gmail.com>
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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, version 3.
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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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*
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* This file incorporates work covered by the following copyright and
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* permission notice:
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*
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* Copyright 2013-2021 MultiMC Contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "StringUtils.h"
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#include <QUuid>
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/// If you're wondering where these came from exactly, then know you're not the only one =D
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/// TAKEN FROM Qt, because it doesn't expose it intelligently
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static inline QChar getNextChar(const QString& s, int location)
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{
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return (location < s.length()) ? s.at(location) : QChar();
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}
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/// TAKEN FROM Qt, because it doesn't expose it intelligently
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int StringUtils::naturalCompare(const QString& s1, const QString& s2, Qt::CaseSensitivity cs)
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{
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int l1 = 0, l2 = 0;
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while (l1 <= s1.count() && l2 <= s2.count()) {
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// skip spaces, tabs and 0's
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QChar c1 = getNextChar(s1, l1);
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while (c1.isSpace())
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c1 = getNextChar(s1, ++l1);
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QChar c2 = getNextChar(s2, l2);
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while (c2.isSpace())
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c2 = getNextChar(s2, ++l2);
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if (c1.isDigit() && c2.isDigit()) {
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while (c1.digitValue() == 0)
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c1 = getNextChar(s1, ++l1);
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while (c2.digitValue() == 0)
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c2 = getNextChar(s2, ++l2);
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int lookAheadLocation1 = l1;
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int lookAheadLocation2 = l2;
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int currentReturnValue = 0;
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// find the last digit, setting currentReturnValue as we go if it isn't equal
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for (QChar lookAhead1 = c1, lookAhead2 = c2; (lookAheadLocation1 <= s1.length() && lookAheadLocation2 <= s2.length());
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lookAhead1 = getNextChar(s1, ++lookAheadLocation1), lookAhead2 = getNextChar(s2, ++lookAheadLocation2)) {
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bool is1ADigit = !lookAhead1.isNull() && lookAhead1.isDigit();
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bool is2ADigit = !lookAhead2.isNull() && lookAhead2.isDigit();
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if (!is1ADigit && !is2ADigit)
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break;
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if (!is1ADigit)
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return -1;
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if (!is2ADigit)
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return 1;
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if (currentReturnValue == 0) {
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if (lookAhead1 < lookAhead2) {
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currentReturnValue = -1;
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} else if (lookAhead1 > lookAhead2) {
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currentReturnValue = 1;
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}
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}
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}
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if (currentReturnValue != 0)
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return currentReturnValue;
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}
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if (cs == Qt::CaseInsensitive) {
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if (!c1.isLower())
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c1 = c1.toLower();
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if (!c2.isLower())
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c2 = c2.toLower();
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}
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int r = QString::localeAwareCompare(c1, c2);
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if (r < 0)
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return -1;
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if (r > 0)
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return 1;
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l1 += 1;
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l2 += 1;
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}
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// The two strings are the same (02 == 2) so fall back to the normal sort
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return QString::compare(s1, s2, cs);
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}
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QString StringUtils::getRandomAlphaNumeric()
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{
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return QUuid::createUuid().toString(QUuid::Id128);
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}
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