libdrmconf 0.12.1
A library to program DMR radios.
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logger.hh
1
3#ifndef LOGGER_HH
4#define LOGGER_HH
5
6#include <QFile>
7#include <QTextStream>
8#include <QList>
9
11#define logDebug() LogMessage(LogMessage::DEBUG, __FILE__, __LINE__)
13#define logInfo() LogMessage(LogMessage::INFO, __FILE__, __LINE__)
15#define logWarn() LogMessage(LogMessage::WARNING, __FILE__, __LINE__)
17#define logError() LogMessage(LogMessage::ERROR, __FILE__, __LINE__)
19#ifdef __cpp_lib_stacktrace
20#include <stacktrace>
21#define logFatal() LogMessage(LogMessage::FATAL, __FILE__, __LINE__) << \
22 QString::fromStdString(std::to_string(std::stacktrace::current()))
23#else
24#define logFatal() LogMessage(LogMessage::FATAL, __FILE__, __LINE__)
25#endif
26
31class LogMessage: public QTextStream
32{
33public:
42
43public:
49 LogMessage(Level level, const QString &file, int line, const QString &message="");
51 LogMessage(const LogMessage &other);
53 virtual ~LogMessage();
54
56 Level level() const;
58 const QString &file() const;
60 int line() const;
62 const QString &message() const;
63
64protected:
68 QString _file;
70 int _line;
72 QString _message;
73};
74
75
78class LogHandler: public QObject
79{
80 Q_OBJECT
81
82public:
84 explicit LogHandler(QObject *parent=nullptr);
86 virtual ~LogHandler();
88 virtual void handle(const LogMessage &message) = 0;
89};
90
91
94class Logger: public QObject
95{
96 Q_OBJECT
97
98protected:
100 Logger();
101
102public:
104 virtual ~Logger();
105
107 void log(const LogMessage &msg);
109 void addHandler(LogHandler *handler);
111 void remHandler(LogHandler *handler);
112
113protected slots:
115 void onHandlerDeleted(QObject *obj);
116
117public:
119 static Logger &get();
120
121protected:
125 QList<LogHandler *> _handler;
126};
127
128
132{
133 Q_OBJECT
134
135public:
141 StreamLogHandler(QTextStream &stream, LogMessage::Level minLevel=LogMessage::DEBUG, bool color=false, QObject *parent=nullptr);
142
147
148 void handle(const LogMessage &message);
149
150protected:
152 QTextStream &_stream;
156 bool _color;
157};
158
159
163{
164 Q_OBJECT
165
166public:
171 FileLogHandler(const QString &file, LogMessage::Level minLevel=LogMessage::DEBUG, QObject *parent=nullptr);
172
174 virtual ~FileLogHandler();
175
180
181 void handle(const LogMessage &message);
182
183protected:
185 QFile _file;
187 QTextStream _stream;
190};
191
192#endif // LOGGER_HH
A log-handler that dumps log-messages into files.
Definition logger.hh:163
void setMinLevel(LogMessage::Level minLevel)
Resets the minimum log level.
Definition logger.cc:218
LogMessage::Level minLevel() const
Returns the minimum log level.
Definition logger.cc:213
QFile _file
The file to log into.
Definition logger.hh:185
void handle(const LogMessage &message)
Callback to handle log messages.
Definition logger.cc:223
QTextStream _stream
A reference to the text stream to log into.
Definition logger.hh:187
FileLogHandler(const QString &file, LogMessage::Level minLevel=LogMessage::DEBUG, QObject *parent=nullptr)
Constructor.
Definition logger.cc:181
LogMessage::Level _minLevel
The minimum log level.
Definition logger.hh:189
virtual ~FileLogHandler()
Destructor, closes log file.
Definition logger.cc:205
Interface for all log message handler.
Definition logger.hh:79
virtual void handle(const LogMessage &message)=0
Callback to handle log messages.
LogHandler(QObject *parent=nullptr)
Constructor.
Definition logger.cc:52
virtual ~LogHandler()
Destructor.
Definition logger.cc:58
Implements a log-message.
Definition logger.hh:32
Level _level
The log level.
Definition logger.hh:66
QString _file
The source file.
Definition logger.hh:68
int _line
The source line.
Definition logger.hh:70
Level
Possible log-levels.
Definition logger.hh:35
@ DEBUG
Level for debug messages. Will not be shown to the user unless requested.
Definition logger.hh:36
@ FATAL
Level for fatal error messages.
Definition logger.hh:40
@ INFO
Level for informative messages. Will not be shown to the user unless requested.
Definition logger.hh:37
@ ERROR
Level for error messages.
Definition logger.hh:39
@ WARNING
Level for warning messages.
Definition logger.hh:38
virtual ~LogMessage()
Destructor.
Definition logger.cc:24
QString _message
The log message content.
Definition logger.hh:72
const QString & message() const
Returns the log message content.
Definition logger.cc:44
Level level() const
Returns the level of the log message.
Definition logger.cc:29
int line() const
Returns the source line.
Definition logger.cc:39
const QString & file() const
Returns the source file.
Definition logger.cc:34
LogMessage(Level level, const QString &file, int line, const QString &message="")
Constructor.
Definition logger.cc:10
Singleton class to process log messages.
Definition logger.hh:95
QList< LogHandler * > _handler
The list of registered log-handler.
Definition logger.hh:125
static Logger * _instance
The singleton instance.
Definition logger.hh:123
void onHandlerDeleted(QObject *obj)
Internal callback to handle deleted handler objects.
Definition logger.cc:106
void addHandler(LogHandler *handler)
Adds a log-handler to the logger.
Definition logger.cc:86
static Logger & get()
Factory method to get the singleton instance.
Definition logger.cc:111
Logger()
Hidden constructor.
Definition logger.cc:68
void remHandler(LogHandler *handler)
Removes a log-handler from the logger.
Definition logger.cc:97
virtual ~Logger()
Destructor.
Definition logger.cc:74
void log(const LogMessage &msg)
Logs a message.
Definition logger.cc:79
A log-handler that dumps log-messages into a QTextStream.
Definition logger.hh:132
LogMessage::Level minLevel() const
Returns the minimum log level.
Definition logger.cc:129
void handle(const LogMessage &message)
Callback to handle log messages.
Definition logger.cc:139
LogMessage::Level _minLevel
The minimum log level.
Definition logger.hh:154
QTextStream & _stream
A reference to the text stream to log into.
Definition logger.hh:152
void setMinLevel(LogMessage::Level minLevel)
Resets the minimum log level.
Definition logger.cc:134
StreamLogHandler(QTextStream &stream, LogMessage::Level minLevel=LogMessage::DEBUG, bool color=false, QObject *parent=nullptr)
Constructor.
Definition logger.cc:122
bool _color
If true, write messages using console colors.
Definition logger.hh:156