Offset

offset.rs

  fn calculate_offset(c: u32, l: u32, t: &String) -> usize {
        let (c, l) = (c as usize, l as usize);
        // Line is 0 indexed so we don't need to skip the
        // line that the cursor is currently on.
        // It will be done automatically during the `take`, because
        // of the 0 index.
        let count = t
            .split('\n')
            .take(l)
            .collect::<Vec<_>>()
            .iter()
            .rev()
            .map(|s| s.len()) // len() includes the new line character for us
            .sum::<usize>();
        let c = c; //- 1; // adjust because of 0 index
        count + c
    }