Function remove_control_chars

std/src/console/mod.rs:423–442

Removes control characters from a string to make it suitable for printing.

(s: S)

/// Removes control characters from a string to make it suitable for printing.
pub fn remove_control_chars<S: Into<String>>(s: S) -> String {
    let s = s.into();

    // Handle the expected common case first.  We use this function to strip control characters
    // before printing them to the console, and thus we expect such input strings to rarely include
    // control characters.
    if !has_control_chars(&s) {
        return s;
    }

    let mut o = String::with_capacity(s.len());
    for ch in s.chars() {
        if ch.is_control() {
            o.push(' ');
        } else {
            o.push(ch);
        }
    }
    o
}

/// Gets the value of the environment variable `name` and interprets it as a `u16`.  Returns
/// `None` if the variable is not set or if its contents are invalid.