107 lines
3.9 KiB
C++
107 lines
3.9 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2014 Digia Plc.
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** Contact: http://www.qt-project.org/legal
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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 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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****************************************************************************/
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#ifndef LOGGING_H
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#define LOGGING_H
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#include <QtGlobal>
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// Backport useful macros
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#if QT_VERSION < QT_VERSION_CHECK(5, 4, 0)
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# ifndef qUtf8Printable
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# define qUtf8Printable(string) QString(string).toUtf8().constData()
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# endif
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#endif
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#if QT_VERSION < QT_VERSION_CHECK(5, 2, 0)
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//
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// Qt < 5.2 didn't feature categorized logging:
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// Just enable qCWarning, qCCritical, but disable qCDebug
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//
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class QLoggingCategory
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{
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Q_DISABLE_COPY(QLoggingCategory)
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public:
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explicit QLoggingCategory(const char *category) : name(category) {}
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~QLoggingCategory() {}
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bool isDebugEnabled() const { return false; }
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bool isWarningEnabled() const { return true; }
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bool isCriticalEnabled() const { return true; }
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const char *categoryName() const { return name; }
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QLoggingCategory &operator()() { return *this; }
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private:
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const char *name;
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};
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#define Q_DECLARE_LOGGING_CATEGORY(name) \
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extern QLoggingCategory &name();
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// relies on QLoggingCategory(QString) being thread safe!
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#define Q_LOGGING_CATEGORY(name, string) \
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QLoggingCategory &name() \
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{ \
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static QLoggingCategory category(string); \
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return category; \
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}
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#if QT_VERSION > QT_VERSION_CHECK(5, 0, 0)
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//
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// Qt 5.0, 5.1 do have already support for categories in QMessageLogger
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//
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#define qCDebug(category, ...) \
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for (bool q_category_enabled = category().isDebugEnabled(); q_category_enabled; q_category_enabled = false) \
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QMessageLogger(__FILE__, __LINE__, Q_FUNC_INFO, category().categoryName()).debug(__VA_ARGS__)
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#define qCWarning(category, ...) \
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for (bool q_category_enabled = category().isWarningEnabled(); q_category_enabled; q_category_enabled = false) \
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QMessageLogger(__FILE__, __LINE__, Q_FUNC_INFO, category().categoryName()).warning(__VA_ARGS__)
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#define qCCritical(category, ...) \
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for (bool q_category_enabled = category().isCriticalEnabled(); q_category_enabled; q_category_enabled = false) \
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QMessageLogger(__FILE__, __LINE__, Q_FUNC_INFO, category().categoryName()).critical(__VA_ARGS__)
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# endif // QT_VERSION > QT_VERSION_CHECK(5, 0, 0)
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#else // QT_VERSION < QT_VERSION_CHECK(5, 2, 0)
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#include <QLoggingCategory>
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#if QT_VERSION < QT_VERSION_CHECK(5, 3, 0)
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// printf style for qCDebug was only added in Qt 5.3
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#undef qCDebug
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#undef qCWarning
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#undef qCCritical
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#define qCDebug(category, ...) \
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for (bool q_category_enabled = category().isDebugEnabled(); q_category_enabled; q_category_enabled = false) \
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QMessageLogger(__FILE__, __LINE__, Q_FUNC_INFO, category().categoryName()).debug(__VA_ARGS__)
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#define qCWarning(category, ...) \
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for (bool q_category_enabled = category().isWarningEnabled(); q_category_enabled; q_category_enabled = false) \
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QMessageLogger(__FILE__, __LINE__, Q_FUNC_INFO, category().categoryName()).warning(__VA_ARGS__)
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#define qCCritical(category, ...) \
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for (bool q_category_enabled = category().isCriticalEnabled(); q_category_enabled; q_category_enabled = false) \
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QMessageLogger(__FILE__, __LINE__, Q_FUNC_INFO, category().categoryName()).critical(__VA_ARGS__)
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#endif // QT_VERSION < QT_VERSION_CHECK(5, 3, 0)
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#endif // QT_VERSION < QT_VERSION_CHECK(5, 2, 0)
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#endif // LOGGING_H
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