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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, 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, Digia gives you certain additional
** rights. These rights are described in the Digia 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QLOGGINGCATEGORY_H
#define QLOGGINGCATEGORY_H
#include <QtCore/qglobal.h>
#include <QtCore/qdebug.h>
QT_BEGIN_NAMESPACE
class Q_CORE_EXPORT QLoggingCategory
{
Q_DISABLE_COPY(QLoggingCategory)
public:
explicit QLoggingCategory(const char *category);
~QLoggingCategory();
bool isEnabled(QtMsgType type) const;
void setEnabled(QtMsgType type, bool enable);
bool isDebugEnabled() const { return enabledDebug; }
bool isWarningEnabled() const { return enabledWarning; }
bool isCriticalEnabled() const { return enabledCritical; }
const char *categoryName() const { return name; }
// allows usage of both factory method and variable in qCX macros
QLoggingCategory &operator()() { return *this; }
const QLoggingCategory &operator()() const { return *this; }
static QLoggingCategory *defaultCategory();
typedef void (*CategoryFilter)(QLoggingCategory*);
static CategoryFilter installFilter(CategoryFilter);
static void setFilterRules(const QString &rules);
private:
void *d; // reserved for future use
const char *name;
bool enabledDebug;
bool enabledWarning;
bool enabledCritical;
bool placeholder[5]; // reserve for future use
};
#define Q_DECLARE_LOGGING_CATEGORY(name) \
extern const QLoggingCategory &name();
// relies on QLoggingCategory(QString) being thread safe!
#define Q_LOGGING_CATEGORY(name, string) \
const QLoggingCategory &name() \
{ \
static const QLoggingCategory category(string); \
return category; \
}
#ifdef Q_COMPILER_VARIADIC_MACROS
#define qCDebug(category, ...) \
for (bool qt_category_enabled = category().isDebugEnabled(); qt_category_enabled; qt_category_enabled = false) \
QMessageLogger(__FILE__, __LINE__, Q_FUNC_INFO, category().categoryName()).debug(__VA_ARGS__)
#define qCWarning(category, ...) \
for (bool qt_category_enabled = category().isWarningEnabled(); qt_category_enabled; qt_category_enabled = false) \
QMessageLogger(__FILE__, __LINE__, Q_FUNC_INFO, category().categoryName()).warning(__VA_ARGS__)
#define qCCritical(category, ...) \
for (bool qt_category_enabled = category().isCriticalEnabled(); qt_category_enabled; qt_category_enabled = false) \
QMessageLogger(__FILE__, __LINE__, Q_FUNC_INFO, category().categoryName()).critical(__VA_ARGS__)
#else
// check for enabled category inside QMessageLogger.
#define qCDebug qDebug
#define qCWarning qWarning
#define qCCritical qCritical
#endif // Q_COMPILER_VARIADIC_MACROS
#if defined(QT_NO_DEBUG_OUTPUT)
# undef qCDebug
# define qCDebug(category) QT_NO_QDEBUG_MACRO()
#endif
#if defined(QT_NO_WARNING_OUTPUT)
# undef qCWarning
# define qCWarning(category) QT_NO_QWARNING_MACRO()
#endif
QT_END_NAMESPACE
#endif // QLOGGINGCATEGORY_H
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