i just want to fucking log to a file

This single-header c++20 library was created out of sheer frustration with the number of C++ logging libraries I tried which either:

1. Were stupidly complicated, despite claiming to be "simple"
2. Didn't even work

Platforms

• Windows
• macOS
• Linux
• You can probably make it work on anything else without much effort

Features

• Thread safe
• Just fucking logs to a file
• Fuck you

Performance

Who gives a shit. I just want to log to a file.

Usage

#include <fulog.hpp>
int main(int argc, const char* argv[]) {
  fu::log("message");
}

The above program creates a log file at: {logging dir}/{application name}/{log name}.log

By default:

• logging dir is the application data directory for the platform.
• application name is fulog.
• log name is the process id.

So by default, here is where the log file will go on each platform:

• Windows: C:/Users/(username)/AppData/Roaming/fulog/(process id).log
• macOS: /Users/(username)/Library/Application Support/fulog/(process id).log
• Linux: /home/(username)/.local/share/fulog/(process id).log

To change the logging directory

fu::set_dir("/somewhere/else");

To change the application name

fu::set_application_name("something else");

To change the log name

fu::set_log_name("something else");

To change the timestamp format

fu::set_timestamp_format("{:%Y-%m-%d %H:%M:%S}");

To log something only if it's a debug build

fu::debug_log("message");

To print different "types" of log message

fu::log("INFO: fuck you");
fu::log("WARNING: just do it yourself")

To log using a format string

fu::log(std::format("fuck you: {}", "just do it yourself"));

To include the source location of the log message

fu::log("message", std::source_location::current());

To clean up the log file directory by deleting anything older than 48 hours

fu::delete_old_files(std::chrono::hours{48});