Files
topgrade/src/terminal.rs
2018-09-06 15:17:03 +03:00

97 lines
2.9 KiB
Rust

use std::cmp::{max, min};
use std::io::{stdin, Write};
use term_size;
use termcolor::{Color, ColorChoice, ColorSpec, StandardStream, WriteColor};
pub struct Terminal {
width: Option<usize>,
stdout: StandardStream,
}
impl Terminal {
pub fn new() -> Self {
Self {
width: term_size::dimensions().map(|(w, _)| w),
stdout: StandardStream::stdout(ColorChoice::Auto),
}
}
pub fn print_separator<P: AsRef<str>>(&mut self, message: P) {
let message = message.as_ref();
match self.width {
Some(width) => {
let _ = self
.stdout
.set_color(ColorSpec::new().set_fg(Some(Color::White)).set_bold(true));
let _ = writeln!(
&mut self.stdout,
"\n―― {} {:―^border$}",
message,
"",
border = max(2, min(80, width as usize) - 3 - message.len())
);
let _ = self.stdout.reset();
let _ = self.stdout.flush();
}
None => {
let _ = writeln!(&mut self.stdout, "―― {} ――", message);
}
}
}
#[allow(dead_code)]
pub fn print_warning<P: AsRef<str>>(&mut self, message: P) {
let message = message.as_ref();
let _ = self
.stdout
.set_color(ColorSpec::new().set_fg(Some(Color::Yellow)).set_bold(true));
let _ = writeln!(&mut self.stdout, "{}", message);
let _ = self.stdout.reset();
let _ = self.stdout.flush();
}
pub fn print_result<P: AsRef<str>>(&mut self, key: P, succeeded: bool) {
let key = key.as_ref();
let _ = write!(&mut self.stdout, "{}: ", key);
let _ = self.stdout.set_color(
ColorSpec::new()
.set_fg(Some(if succeeded { Color::Green } else { Color::Red }))
.set_bold(true),
);
let _ = writeln!(&mut self.stdout, "{}", if succeeded { "OK" } else { "FAILED" });
let _ = self.stdout.reset();
let _ = self.stdout.flush();
}
pub fn should_retry(&mut self) -> bool {
if self.width.is_none() {
return false;
}
println!();
loop {
let mut result = String::new();
let _ = self
.stdout
.set_color(ColorSpec::new().set_fg(Some(Color::Yellow)).set_bold(true));
let _ = write!(&mut self.stdout, "Retry? [y/N] ");
let _ = self.stdout.reset();
let _ = self.stdout.flush();
if stdin().read_line(&mut result).is_ok() {
match result.as_str() {
"y\n" | "Y\n" => return true,
"n\n" | "N\n" | "\n" => return false,
_ => (),
}
} else {
return false;
}
}
}
}