pub fn mask_str(str: &str) -> String {
let len = str.chars().by_ref().count();
let split = len / 2;
let split2 = split / 2;
let mut res = String::new();
let mut chars = str.chars();
res.extend(chars.by_ref().take(split2));
res.push_str(&"*".repeat(split));
let _ = chars.by_ref().take(split).count();
res.extend(chars);
res
}
pub fn limit_str(str: &str, limit: usize) -> String {
let len = str.chars().by_ref().count();
if len > limit {
let mut chars = str.chars();
let mut string = chars.by_ref().take(limit).collect::<String>();
string.push_str("..");
string
} else {
str.to_owned()
}
}