vendor/textwrap/examples/termwidth.rs

   1 #[cfg(feature = "hyphenation")]
   2 extern crate hyphenation;
   3 extern crate textwrap;
   4
   5 #[cfg(feature = "hyphenation")]
   6 use hyphenation::{Language, Load, Standard};
   7 #[cfg(feature = "term_size")]
   8 use textwrap::Wrapper;
   9
  10 #[cfg(not(feature = "term_size"))]
  11 fn main() {
  12     println!("Please enable the term_size feature to run this example.");
  13 }
  14
  15 #[cfg(feature = "term_size")]
  16 fn main() {
  17     #[cfg(not(feature = "hyphenation"))]
  18     fn new_wrapper<'a>() -> (&'static str, Wrapper<'a, textwrap::HyphenSplitter>) {
  19         ("without hyphenation", Wrapper::with_termwidth())
  20     }
  21
  22     #[cfg(feature = "hyphenation")]
  23     fn new_wrapper<'a>() -> (&'static str, Wrapper<'a, Standard>) {
  24         let dictionary = Standard::from_embedded(Language::EnglishUS).unwrap();
  25         (
  26             "with hyphenation",
  27             Wrapper::with_splitter(textwrap::termwidth(), dictionary),
  28         )
  29     }
  30
  31     let example = "Memory safety without garbage collection. \
  32                    Concurrency without data races. \
  33                    Zero-cost abstractions.";
  34     // Create a new Wrapper -- automatically set the width to the
  35     // current terminal width.
  36     let (msg, wrapper) = new_wrapper();
  37     println!("Formatted {} in {} columns:", msg, wrapper.width);
  38     println!("----");
  39     println!("{}", wrapper.fill(example));
  40     println!("----");
  41 }