Looking for a simple logger for your C project? SimpleLogger
might be for you.
- Based on RAII
- Configurable level symbols
- Datetime, ISO Datetime, EPOCH, and custom timestamp formats
- Logging levels:
Trace
,Debug
,Info
,Warning
,Error
,Fatal
- Log to file and/or console
- Thread-safe
- Uses streams (<< operator)
- Very easy to use
Just add src/simple_logger.hpp
and src/simple_logger.cpp
to your project and start using it!
Copy contents of SimpleLogger
under your main project (or clone as a Git submodule).
In your CMakeLists.txt
:
add_subdirectory(SimpleLogger EXCLUDE_FROM_ALL)
include_directories(SimpleLogger/src)
Link to the library:
target_link_libraries(${YOUR_TARGET_NAME} SimpleLogger_static)
In your code:
#include "simple_logger.hpp"
Build and install:
$ mkdir build && cd build
$ cmake ..
$ make
$ sudo make install
Link to libSimpleLogger_static.a
or libSimpleLogger.so
.
Note: instead of Logger
class you can simply use L
.
using juzzlin::L;
L().info() << "Something happened";
Outputs something like this:
Sat Oct 13 22:38:42 2018 I: Something happened
using juzzlin::L;
L::initialize("/tmp/myLog.txt");
L().info() << "Something happened";
using juzzlin::L;
L::initialize("/tmp/myLog.txt");
L::enableEchoMode(false);
L().info() << "Something happened";
using juzzlin::L;
L::setLoggingLevel(L::Level::Debug);
L().info() << "Something happened";
L().debug() << "A debug thing happened";
Outputs something like this:
Sat Oct 13 22:38:42 2018 I: Something happened
Sat Oct 13 22:38:42 2018 D: A debug thing happened
using juzzlin::L;
L::setLoggingLevel(L::Level::Info);
L("MyTag").info() << "Something happened";
Outputs something like this:
Sat Oct 13 22:38:42 2018 I: MyTag: Something happened
using juzzlin::L;
L::setLoggingLevel(L::Level::Debug);
L::setLevelSymbol(L::Level::Debug, "<DEBUG>");
L().debug() << "A debug thing happened";
Outputs something like this:
Sat Oct 13 22:38:42 2018 <DEBUG> A debug thing happened
Possible timestamp modes: None
, EpochSeconds
, EpochMilliseconds
, EpochMicroseconds
, DateTime
, ISODateTime
.
using juzzlin::L;
L::setTimestampMode(L::TimestampMode::EpochMilliseconds);
L::setTimestampSeparator(" ## ");
L().info() << "Something happened";
Outputs something like this:
1562955750677 ## I: Something happened
By setting a custom timestamp format the timestamp mode is set to Custom
:
using juzzlin::L;
L::setCustomTimestampFormat("%H:%M:%S_%Y-%m-%d");
L::setTimestampSeparator(" ## ");
L().info() << "Something happened";
Outputs something like this:
12:34:58_2024-07-06 ## I: Something happened
using juzzlin::L;
std::stringstream ssI;
L::setStream(L::Level::Info, ssI);
C 17
MIT