113 lines
4.4 KiB
C++
113 lines
4.4 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the Qt Assistant of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtCore/QCoreApplication>
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#include <QtCore/QHash>
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#include <QtCore/QRegExp>
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#include <QtCore/QMutexLocker>
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#include <QtGui/QTextDocument>
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#include "qhelp_global.h"
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QString QHelpGlobal::uniquifyConnectionName(const QString &name, void *pointer)
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{
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static QMutex mutex;
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QMutexLocker locker(&mutex);
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static QHash<QString,quint16> idHash;
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return QString::fromLatin1("%1-%2-%3").
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arg(name).arg(quintptr(pointer)).arg(++idHash[name]);
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}
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QString QHelpGlobal::documentTitle(const QString &content)
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{
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QString title = QCoreApplication::translate("QHelp", "Untitled");
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if (!content.isEmpty()) {
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int start = content.indexOf(QLatin1String("<title>"), 0, Qt::CaseInsensitive) + 7;
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int end = content.indexOf(QLatin1String("</title>"), 0, Qt::CaseInsensitive);
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if ((end - start) > 0) {
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title = content.mid(start, end - start);
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if (Qt::mightBeRichText(title) || title.contains(QLatin1Char('&'))) {
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QTextDocument doc;
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doc.setHtml(title);
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title = doc.toPlainText();
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}
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}
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}
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return title;
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}
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QString QHelpGlobal::codecFromData(const QByteArray &data)
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{
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QString codec = codecFromXmlData(data);
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if (codec.isEmpty())
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codec = codecFromHtmlData(data);
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return codec.isEmpty() ? QLatin1String("utf-8") : codec;
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}
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QString QHelpGlobal::codecFromHtmlData(const QByteArray &data)
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{
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QString head = QString::fromUtf8(data.constData(), qMin(1000, data.size()));
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int start = head.indexOf(QLatin1String("<meta"), 0, Qt::CaseInsensitive);
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if (start > 0) {
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QRegExp r(QLatin1String("charset=([^\"\\s]+)"));
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while (start != -1) {
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const int end = head.indexOf(QLatin1Char('>'), start) + 1;
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if (end <= start)
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break;
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const QString &meta = head.mid(start, end - start).toLower();
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if (r.indexIn(meta) != -1)
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return r.cap(1);
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start = head.indexOf(QLatin1String("<meta"), end,
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Qt::CaseInsensitive);
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}
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}
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return QString();
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}
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QString QHelpGlobal::codecFromXmlData(const QByteArray &data)
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{
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QString head = QString::fromUtf8(data.constData(), qMin(1000, data.size()));
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const QRegExp encodingExp(QLatin1String("^\\s*<\\?xml version="
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"\"\\d\\.\\d\" encoding=\"([^\"]+)\"\\?>.*"));
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return encodingExp.exactMatch(head) ? encodingExp.cap(1) : QString();
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}
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