C-LOGGER

Simple code for printing colored logs to the terminal or saving them to a file using C.

Usage

• 4 log level for stdout:

DEBUG("This is debug info with color: %s", "blue");
INFO("This is info info with color: %s", "green");
ERROR("This is error info with color: %s", "red");
TRACE("This is error info with color: %s", "orange");

• Output:

• In the log file storage, there are 3 log levels with limits. If the log surpasses the defined limit, the program will automatically delete the first 300 lines from the log to allow continuous writing (specified by NUMBER2DEL in the file header).

// Initialize the log with a log name and set a log size limit.
log_profile_t* log_profile = init_logger_file("mqtt_log", 1 * MB);
// Begin writing logs.
STORE_DEBUG("this is debug message!",log_profile);
STORE_INFO("this is info message!",log_profile);
STORE_ERROR("this is error message!",log_profile);
STORE_TRACE("this is trace message!",log_profile);
// Close the profile.
close_log_profile(log_profile);

• Output:

• You can enable timestamp, file line info, and color output by -D option in Makefile:
  • -DUSE_DEBUG_LINE
  • -DUSE_COLOR
  • -DUSE_TIMESTAMP

Build

• Support static library, define INCLUDE_PATH and LIBRARY_PATH then build with command:

make lib
make install