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use nom::{
character::complete::{alphanumeric1 as alphanumeric, line_ending as eol},
multi::many0,
sequence::terminated,
IResult,
};
pub fn end_of_line(input: &str) -> IResult<&str, &str> {
if input.is_empty() {
Ok((input, input))
} else {
eol(input)
}
}
pub fn read_line(input: &str) -> IResult<&str, &str> {
terminated(alphanumeric, end_of_line)(input)
}
pub fn read_lines(input: &str) -> IResult<&str, Vec<&str>> {
many0(read_line)(input)
}
#[cfg(feature = "alloc")]
#[test]
fn read_lines_test() {
let res = Ok(("", vec!["Duck", "Dog", "Cow"]));
assert_eq!(read_lines("Duck\nDog\nCow\n"), res);
assert_eq!(read_lines("Duck\nDog\nCow"), res);
}
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