C Logger

Simple C logger that prints ASCII color-coded messages to the terminal and can optionally mirror them to a log file.

The entire public interface lives in logger.h; compile logger.c once and link it with the rest of your program.

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Features

Capability	Details
Severity levels	INFO, WARN, ERROR, FATAL
ANSI colours	Each level maps to an ANSI escape sequence for easy scanning of console output
Optional file log	Call logger_init() with write_to_file = 1 to also append/write to log.txt

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Quick start

# Clone and build demo
git clone https://github.com/jacobismael/clogger.git
cd clogger
gcc main.c logger.c -o demo   # produces ./demo
./demo                       # run it

Example Usage

#include "logger.h"
int main()
{
    logger_init(1, APPEND);              // also write to log.txt
    log_msg(INFO,  "System up");
    log_msg(WARN,  "Battery low");
    log_msg(ERROR, "Sensor failure");
    log_msg(FATAL, "Emergency stop");
    logger_shutdown();
    return 0;
}

Future Features

• Thread-safety for multi-core applications
• Time-stamps on each log line
• Customizable log file name and location
• Compile-time color-disable switch for non-ANSI terminals