1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
#![allow(dead_code)]
use std::io::Write;
pub const COLOR_SERVER: &str = "\x1b[34m";
pub const COLOR_CLIENT: &str = "\x1b[31m";
pub const RESET: &str = "\x1b[0m";
#[derive(Clone, Copy, Debug)]
pub enum Role {
Client,
Server,
}
pub fn read_more(role: Role, message_begin: bool) -> Vec<u8> {
let prompt = if message_begin {
match role {
Role::Client => "C: ",
Role::Server => "S: ",
}
} else {
".. "
};
let line = read_line(prompt, role);
// If `read_line` produces an empty string, standard input has been closed.
if line.is_empty() || line.trim() == "exit" {
println!("Exiting.");
std::process::exit(0);
}
line.into_bytes()
}
fn read_line(prompt: &str, role: Role) -> String {
match role {
Role::Client => print!("{}{COLOR_CLIENT}", prompt),
Role::Server => print!("{}{COLOR_SERVER}", prompt),
}
std::io::stdout().flush().unwrap();
let mut line = String::new();
std::io::stdin().read_line(&mut line).unwrap();
print!("{RESET}");
// If `Stdin::read_line` produces an empty string, standard input has been closed.
if line.is_empty() {
return line;
}
// Ensure `CRLF` line ending of resulting string.
// Line ending of `line` can be one of:
// - `CRLF` on Windows
// - `LF` on Unix-like
// - none when EOF of standard input is reached
if line.ends_with("\r\n") {
return line;
}
if line.ends_with('\n') {
line.pop();
}
line + "\r\n"
}
|
