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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Assistant of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtCore/QCoreApplication>
#include <QtCore/QRegExp>
#include <QtCore/QMutexLocker>
#include <QtGui/QTextDocument>
#include "qhelp_global.h"
QString QHelpGlobal::uniquifyConnectionName(const QString &name, void *pointer)
{
static int counter = 0;
static QMutex mutex;
QMutexLocker locker(&mutex);
if (++counter > 1000)
counter = 0;
return QString::fromLatin1("%1-%2-%3").
arg(name).arg(quintptr(pointer)).arg(counter);
}
QString QHelpGlobal::documentTitle(const QString &content)
{
QString title = QCoreApplication::translate("QHelp", "Untitled");
if (!content.isEmpty()) {
int start = content.indexOf(QLatin1String("<title>"), 0, Qt::CaseInsensitive) + 7;
int end = content.indexOf(QLatin1String("</title>"), 0, Qt::CaseInsensitive);
if ((end - start) > 0) {
title = content.mid(start, end - start);
if (Qt::mightBeRichText(title) || title.contains(QLatin1Char('&'))) {
QTextDocument doc;
doc.setHtml(title);
title = doc.toPlainText();
}
}
}
return title;
}
QString QHelpGlobal::codecFromData(const QByteArray &data)
{
QString codec = codecFromXmlData(data);
if (codec.isEmpty())
codec = codecFromHtmlData(data);
return codec.isEmpty() ? QLatin1String("utf-8") : codec;
}
QString QHelpGlobal::codecFromHtmlData(const QByteArray &data)
{
QString head = QString::fromUtf8(data.constData(), qMin(1000, data.size()));
int start = head.indexOf(QLatin1String("<meta"), 0, Qt::CaseInsensitive);
if (start > 0) {
QRegExp r(QLatin1String("charset=([^\"\\s]+)"));
while (start != -1) {
const int end = head.indexOf(QLatin1Char('>'), start) + 1;
if (end <= start)
break;
const QString &meta = head.mid(start, end - start).toLower();
if (r.indexIn(meta) != -1)
return r.cap(1);
start = head.indexOf(QLatin1String("<meta"), end,
Qt::CaseInsensitive);
}
}
return QString();
}
QString QHelpGlobal::codecFromXmlData(const QByteArray &data)
{
QString head = QString::fromUtf8(data.constData(), qMin(1000, data.size()));
const QRegExp encodingExp(QLatin1String("^\\s*<\\?xml version="
"\"\\d\\.\\d\" encoding=\"([^\"]+)\"\\?>.*"));
return encodingExp.exactMatch(head) ? encodingExp.cap(1) : QString();
}
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