63 lines
2 KiB
C++
63 lines
2 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <sal/config.h>
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#include <o3tl/string_view.hxx>
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#include <dp_version.hxx>
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namespace {
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std::u16string_view getElement(std::u16string_view version, std::size_t * index)
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{
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while (*index < version.size() && version[*index] == '0') {
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++*index;
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}
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return o3tl::getToken(version, u'.', *index);
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}
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}
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namespace dp_misc {
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::dp_misc::Order compareVersions(
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std::u16string_view version1, std::u16string_view version2)
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{
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for (size_t i1 = 0, i2 = 0; i1 != std::u16string_view::npos || i2 != std::u16string_view::npos;) {
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std::u16string_view e1(i1 != std::u16string_view::npos ? getElement(version1, &i1) : std::u16string_view());
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std::u16string_view e2(i2 != std::u16string_view::npos ? getElement(version2, &i2) : std::u16string_view());
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if (e1.size() < e2.size()) {
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return ::dp_misc::LESS;
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} else if (e1.size() > e2.size()) {
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return ::dp_misc::GREATER;
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} else if (e1 < e2) {
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return ::dp_misc::LESS;
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} else if (e1 > e2) {
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return ::dp_misc::GREATER;
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}
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}
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return ::dp_misc::EQUAL;
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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