Function unescape_string

tests/integration.rs:164–188

(s: &str)

}

fn unescape_string(s: &str) -> String {
    let mut result = String::with_capacity(s.len());
    let mut chars = s.chars().peekable();

    while let Some(ch) = chars.next() {
        if ch == '\\' {
            match chars.next() {
                Some('n') => result.push('\n'),
                Some('t') => result.push('\t'),
                Some('r') => result.push('\r'),
                Some('\\') => result.push('\\'),
                Some('"') => result.push('"'),
                Some('\'') => result.push('\''),
                Some(c) => {
                    result.push('\\');
                    result.push(c);
                }
                None => result.push('\\'),
            }
        } else {
            result.push(ch);
        }
    }
    result
}