1// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
2// Distributed under the MIT License (http://opensource.org/licenses/MIT)
3
4#pragma once
5#include <spdlog/cfg/helpers.h>
6#include <spdlog/details/registry.h>
7#include <spdlog/details/os.h>
8
9//
10// Init levels and patterns from env variables SPDLOG_LEVEL
11// Inspired from Rust's "env_logger" crate (https://crates.io/crates/env_logger).
12// Note - fallback to "info" level on unrecognized levels
13//
14// Examples:
15//
16// set global level to debug:
17// export SPDLOG_LEVEL=debug
18//
19// turn off all logging except for logger1:
20// export SPDLOG_LEVEL="*=off,logger1=debug"
21//
22
23// turn off all logging except for logger1 and logger2:
24// export SPDLOG_LEVEL="off,logger1=debug,logger2=info"
25
26namespace spdlog {
27namespace cfg {
28inline void load_env_levels()
29{
30 auto env_val = details::os::getenv("SPDLOG_LEVEL");
31 if (!env_val.empty())
32 {
33 helpers::load_levels(env_val);
34 }
35}
36
37} // namespace cfg
38} // namespace spdlog
39