chars_input

chars input

```rust extern crate chars_input;

use chars_input::{Chars, Input, State};

fn line_count(input: &mut Input, state: &mut State) -> usize { let mut lines = 0;

while let Some(_) = input.read_line(state) {
    lines += 1;
}

lines

}

fn main() { let mut lines = Chars::new("Hello, world!\n some chars input.\n".chars()); asserteq!(linecount(&mut lines, &mut State::new()), 2);

let mut state = State::new();
let mut chars = "abcdef".chars().collect::<Vec<char>>();

assert_eq!(chars.peek(&state, 0), Some('a'));
assert_eq!(chars.peek(&state, 1), Some('b'));
assert_eq!(chars.peek(&state, 2), Some('c'));

chars.read_offset(&mut state, 3);

assert_eq!(chars.read(&mut state), Some('d'));
assert_eq!(chars.read(&mut state), Some('e'));
assert_eq!(chars.read(&mut state), Some('f'));

assert_eq!(state.index(), 6);
assert_eq!(state.row(), 1);
assert_eq!(state.col(), 6);

assert_eq!(chars.is_done(&state), true);

} ```