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rustler_btleplug

0.0.3-alpha
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Elixir library providing Bluetooth Low Energy (BLE) client functionality through a Rustler NIF. Uses the btleplug crate to scan for, connect to, and interact with BLE peripherals. POC basic functionality and only client (central) mode is supported resp. usable currently.

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rustler_btleplug native btleplug_client src logging.rs
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native/btleplug_client/src/logging.rs 

use std::env;

use log::{debug, error, info, warn, LevelFilter};

use pretty_env_logger::env_logger;

use env_logger::{Builder, Target};

use atty::Stream;

use std::io::Write;



pub fn init_log() {

    if atty::is(Stream::Stdout) {

        init_log_cli();

    } else {

        init_log_phoenix();

    }

}



/// **🎨 CLI Mode:** Full-color logs for interactive terminals.

fn init_log_cli() {

    let log_level = env::var("RUST_LOG").unwrap_or_else(|_| "info".to_string()); // Read env var

    let filter = log_level.parse().unwrap_or(LevelFilter::Info); // Fallback if parsing fails



    Builder::new()

        .format(|buf, record| {

            let level_style = buf.default_level_style(record.level()); // Apply colors

            writeln!(

                buf,

                "{} [{}] {}:{} - {}",

                chrono::Local::now().format("%Y-%m-%d %H:%M:%S"),

                level_style.value(record.level()), // Colored log level

                record.file().unwrap_or("unknown"),

                record.line().unwrap_or(0),

                record.args()

            )

        })

        .filter_level(filter) // ✅ Explicitly set the filter level

        .target(Target::Stdout)

        .init();

}



/// **🌐 Phoenix Mode:** Cleaner logs (no colors, better formatting for Elixir).

fn init_log_phoenix() {

    let log_level = env::var("RUST_LOG").unwrap_or_else(|_| "info".to_string());

    let filter = log_level.parse().unwrap_or(LevelFilter::Info);



    Builder::new()

        .format(|buf, record| {

            writeln!(

                buf,

                "[{}] {}:{} [{}] - {}",

                chrono::Local::now().format("%Y-%m-%d %H:%M:%S"),

                record.file().unwrap_or("unknown"),

                record.line().unwrap_or(0),

                record.level(),

                record.args()

            )

        })

        .filter_level(filter) // ✅ Explicitly set the filter level

        .target(Target::Stdout)

        .init();

}