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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QLOGGINGREGISTRY_P_H
#define QLOGGINGREGISTRY_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of a number of Qt sources files. This header file may change from
// version to version without notice, or even be removed.
//
// We mean it.
//
#include <QtCore/private/qglobal_p.h>
#include <QtCore/qloggingcategory.h>
#include <QtCore/qlist.h>
#include <QtCore/qhash.h>
#include <QtCore/qmutex.h>
#include <QtCore/qstring.h>
#include <QtCore/qtextstream.h>
#include <map>
class tst_QLoggingRegistry;
QT_BEGIN_NAMESPACE
#define Q_LOGGING_CATEGORY_WITH_ENV_OVERRIDE(name, env, categoryName) \
const QLoggingCategory &name() \
{ \
static constexpr char cname[] = categoryName; \
static_assert(cname[0] == 'q' && cname[1] == 't' && cname[2] == '.' \
&& cname[4] != '\0', "Category name must start with 'qt.'"); \
static const QLoggingCategoryWithEnvironmentOverride category(cname, env); \
return category; \
}
class Q_AUTOTEST_EXPORT QLoggingRule
{
public:
QLoggingRule();
QLoggingRule(QStringView pattern, bool enabled);
int pass(QLatin1StringView categoryName, QtMsgType type) const;
enum PatternFlag {
FullText = 0x1,
LeftFilter = 0x2,
RightFilter = 0x4,
MidFilter = LeftFilter | RightFilter
};
Q_DECLARE_FLAGS(PatternFlags, PatternFlag)
QString category;
int messageType = -1;
PatternFlags flags;
bool enabled = false;
private:
void parse(QStringView pattern);
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QLoggingRule::PatternFlags)
Q_DECLARE_TYPEINFO(QLoggingRule, Q_RELOCATABLE_TYPE);
class Q_AUTOTEST_EXPORT QLoggingSettingsParser
{
public:
void setImplicitRulesSection(bool inRulesSection) { m_inRulesSection = inRulesSection; }
void setContent(QStringView content);
void setContent(QTextStream &stream);
QList<QLoggingRule> rules() const { return _rules; }
private:
void parseNextLine(QStringView line);
private:
bool m_inRulesSection = false;
QList<QLoggingRule> _rules;
};
class Q_AUTOTEST_EXPORT QLoggingRegistry
{
Q_DISABLE_COPY_MOVE(QLoggingRegistry)
public:
QLoggingRegistry();
void initializeRules();
void registerCategory(QLoggingCategory *category, QtMsgType enableForLevel);
void unregisterCategory(QLoggingCategory *category);
#ifndef QT_BUILD_INTERNAL
Q_CORE_EXPORT // always export from QtCore
#endif
void registerEnvironmentOverrideForCategory(const char *categoryName, const char *environment);
void setApiRules(const QString &content);
QLoggingCategory::CategoryFilter
installFilter(QLoggingCategory::CategoryFilter filter);
static QLoggingRegistry *instance();
private:
void updateRules();
static void defaultCategoryFilter(QLoggingCategory *category);
enum RuleSet {
// sorted by order in which defaultCategoryFilter considers them:
QtConfigRules,
ConfigRules,
ApiRules,
EnvironmentRules,
NumRuleSets
};
QMutex registryMutex;
// protected by mutex:
QList<QLoggingRule> ruleSets[NumRuleSets];
QHash<QLoggingCategory *, QtMsgType> categories;
QLoggingCategory::CategoryFilter categoryFilter;
std::map<QByteArrayView, const char *> qtCategoryEnvironmentOverrides;
friend class ::tst_QLoggingRegistry;
};
class QLoggingCategoryWithEnvironmentOverride : public QLoggingCategory
{
public:
QLoggingCategoryWithEnvironmentOverride(const char *category, const char *env)
: QLoggingCategory(registerOverride(category, env), QtInfoMsg)
{}
private:
static const char *registerOverride(const char *categoryName, const char *environment)
{
QLoggingRegistry *c = QLoggingRegistry::instance();
if (c)
c->registerEnvironmentOverrideForCategory(categoryName, environment);
return categoryName;
}
};
QT_END_NAMESPACE
#endif // QLOGGINGREGISTRY_P_H
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