vendor/env_logger/src/fmt/writer/atty.rs

   1 /*
   2 This internal module contains the terminal detection implementation.
   3
   4 If the `auto-color` feature is enabled then we detect whether we're attached to a particular TTY.
   5 Otherwise, assume we're not attached to anything. This effectively prevents styles from being
   6 printed.
   7 */
   8
   9 #[cfg(feature = "auto-color")]
  10 mod imp {
  11     use is_terminal::IsTerminal;
  12
  13     pub(in crate::fmt) fn is_stdout() -> bool {
  14         std::io::stdout().is_terminal()
  15     }
  16
  17     pub(in crate::fmt) fn is_stderr() -> bool {
  18         std::io::stderr().is_terminal()
  19     }
  20 }
  21
  22 #[cfg(not(feature = "auto-color"))]
  23 mod imp {
  24     pub(in crate::fmt) fn is_stdout() -> bool {
  25         false
  26     }
  27
  28     pub(in crate::fmt) fn is_stderr() -> bool {
  29         false
  30     }
  31 }
  32
  33 pub(in crate::fmt) use self::imp::*;