Crate log_settings [−] [src]
This crate enables libraries that use the log
crate (or an equivalent) to communicate with
the actual logger, without requiring the library to know about the type of logger that is used.
The crate
On the library side
You can set a value by accessing the Settings
struct through the settings
function.
extern crate log_settings; log_settings::settings().indentation += 1;
On the executable side
You can read a value by accessing the Settings
struct through the settings
function.
#[macro_use] extern crate log; extern crate env_logger; extern crate log_settings; use std::env; use log::{LogRecord, LogLevelFilter}; use env_logger::LogBuilder; fn main() { let format = |record: &LogRecord| { // prepend spaces to indent the final string let indentation = log_settings::settings().indentation; let spaces = " "; let indentation = s[..std::cmp::max(indentation, spaces.len())]; format!("{}{} - {}", indentation, record.level(), record.args()) }; let mut builder = LogBuilder::new(); builder.format(format).filter(None, LogLevelFilter::Info); if env::var("RUST_LOG").is_ok() { builder.parse(&env::var("RUST_LOG").unwrap()); } builder.init().unwrap(); }
Structs
Settings |
Contains various settings that libraries might want to set to notify loggers that also use this crate of internal library states |
Functions
settings |
obtains a handle to the internal settings struct |