| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the Qt Assistant of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
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| ** |
| ** GNU Lesser General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU Lesser |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
| ** packaging of this file. Please review the following information to |
| ** ensure the GNU Lesser General Public License version 3 requirements |
| ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
| ** Qt Foundation. The licenses are as published by the Free Software |
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| ** information to ensure the GNU General Public License requirements will |
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| ** $QT_END_LICENSE$ |
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| ****************************************************************************/ |
| |
| #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 QMutex mutex; |
| QMutexLocker locker(&mutex); |
| |
| static QHash<QString,quint16> idHash; |
| |
| return QString::fromLatin1("%1-%2-%3"). |
| arg(name).arg(quintptr(pointer)).arg(++idHash[name]); |
| } |
| |
| QString QHelpGlobal::documentTitle(const QString &content) |
| { |
| QString title = QCoreApplication::translate("QHelp", "Untitled"); |
| if (!content.isEmpty()) { |
| const int start = content.indexOf(QLatin1String("<title>"), 0, Qt::CaseInsensitive) + 7; |
| const 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) |
| { |
| const QString &head = QString::fromUtf8(data.constData(), qMin(1000, data.size())); |
| int start = head.indexOf(QLatin1String("<meta"), 0, Qt::CaseInsensitive); |
| if (start > 0) { |
| const 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) |
| { |
| const 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(); |
| } |