env.h 986 B

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