extern crate leftpad;

use leftpad::{left_pad, left_pad_char};

fn main() {
    println!("{}", left_pad("pad me", 20));
    println!("{}", left_pad("pad me again", 20));
}

$ cargo run
              pad me
        pad me again

println!("{}", left_pad_char("tick", 20, '✓'));

$ cargo run
✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓✓tick

pub fn left_pad(s: &str, pad: usize) -> String
{
    left_pad_char(s, pad, ' ')
}

pub fn left_pad_char(s: &str, pad: usize, padchar: char) -> String
{
    let mut out = String::new();

    let len = s.len();
    if pad > len {
        for _ in 0..pad-len {
            out.push(padchar);
        }
    }
    out.push_str(s);

    out
}

Copyright (c) 2016, Hubert Figuière
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