mirror of
https://invent.kde.org/graphics/okular
synced 2024-10-30 10:55:54 +00:00
114 lines
3.3 KiB
C++
114 lines
3.3 KiB
C++
/*
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SPDX-FileCopyrightText: 2020 Albert Astals Cid <aacid@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "xmlgui_helper.h"
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#include "kxmlgui_version.h"
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#if KXMLGUI_VERSION >= QT_VERSION_CHECK(5, 73, 0)
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#include <KXMLGUIClient>
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#endif
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#include <QDebug>
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#include <QFile>
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#if KXMLGUI_VERSION < QT_VERSION_CHECK(5, 73, 0)
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// Copied from KXmlGuiVersionHandler::findVersionNumber :/
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static QString findVersionNumber(const QString &xml)
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{
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enum { ST_START, ST_AFTER_OPEN, ST_AFTER_GUI, ST_EXPECT_VERSION, ST_VERSION_NUM } state = ST_START;
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const int length = xml.length();
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for (int pos = 0; pos < length; pos++) {
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switch (state) {
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case ST_START:
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if (xml[pos] == QLatin1Char('<')) {
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state = ST_AFTER_OPEN;
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}
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break;
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case ST_AFTER_OPEN: {
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// Jump to gui..
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const int guipos = xml.indexOf(QLatin1String("gui"), pos, Qt::CaseInsensitive);
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if (guipos == -1) {
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return QString(); // Reject
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}
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pos = guipos + 2; // Position at i, so we're moved ahead to the next character by the ++;
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state = ST_AFTER_GUI;
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break;
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}
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case ST_AFTER_GUI:
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state = ST_EXPECT_VERSION;
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break;
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case ST_EXPECT_VERSION: {
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const int verpos = xml.indexOf(QLatin1String("version"), pos, Qt::CaseInsensitive);
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if (verpos == -1) {
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return QString(); // Reject
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}
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pos = verpos + 7; // strlen("version") is 7
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while (xml.at(pos).isSpace()) {
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++pos;
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}
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if (xml.at(pos++) != QLatin1Char('=')) {
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return QString(); // Reject
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}
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while (xml.at(pos).isSpace()) {
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++pos;
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}
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state = ST_VERSION_NUM;
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break;
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}
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case ST_VERSION_NUM: {
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int endpos;
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for (endpos = pos; endpos < length; endpos++) {
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const ushort ch = xml[endpos].unicode();
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if (ch >= QLatin1Char('0') && ch <= QLatin1Char('9')) {
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continue; // Number..
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}
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if (ch == QLatin1Char('"')) { // End of parameter
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break;
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} else { // This shouldn't be here..
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endpos = length;
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}
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}
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if (endpos != pos && endpos < length) {
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const QString matchCandidate = xml.mid(pos, endpos - pos); // Don't include " ".
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return matchCandidate;
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}
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state = ST_EXPECT_VERSION; // Try to match a well-formed version..
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break;
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} // case..
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} // switch
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} // for
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return QString();
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}
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#endif
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namespace Okular
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{
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void removeRCFileIfVersionSmallerThan(const QString &filePath, int version)
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{
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QFile f(filePath);
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if (f.open(QIODevice::ReadOnly)) {
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const QByteArray contents = f.readAll();
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f.close();
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#if KXMLGUI_VERSION < QT_VERSION_CHECK(5, 73, 0)
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const QString fileVersion = findVersionNumber(contents);
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#else
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const QString fileVersion = KXMLGUIClient::findVersionNumber(contents);
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#endif
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if (fileVersion.toInt() < version) {
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QFile::remove(filePath);
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}
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}
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}
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}
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