src/tools/rustbook/term.rs

   1 // Copyright 2014 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 //! An abstraction of the terminal. Eventually, provide color and
  12 //! verbosity support. For now, just a wrapper around stdout/stderr.
  13
  14 use std::io;
  15 use std::io::prelude::*;
  16 use std::sync::atomic::Ordering;
  17
  18 pub struct Term {
  19     err: Box<Write + 'static>
  20 }
  21
  22 impl Term {
  23     pub fn new() -> Term {
  24         Term {
  25             err: Box::new(io::stderr())
  26         }
  27     }
  28
  29     pub fn err(&mut self, msg: &str) {
  30         // swallow any errors
  31         let _ = writeln!(&mut self.err, "{}", msg);
  32         ::EXIT_STATUS.store(101, Ordering::SeqCst);
  33     }
  34 }