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use winnow::combinator::seq;
use winnow::prelude::*;
use winnow::token::take_while;
use winnow::Result;
#[derive(Debug, Eq, PartialEq)]
pub(crate) struct Color {
pub(crate) red: u8,
pub(crate) green: u8,
pub(crate) blue: u8,
}
impl std::str::FromStr for Color {
// The error must be owned
type Err = String;
fn from_str(s: &str) -> Result<Self, Self::Err> {
hex_color.parse(s).map_err(|e| e.to_string())
}
}
pub(crate) fn hex_color(input: &mut &str) -> Result<Color> {
seq!(Color {
_: '#',
red: hex_primary,
green: hex_primary,
blue: hex_primary
})
.parse_next(input)
}
fn hex_primary(input: &mut &str) -> Result<u8> {
take_while(2, |c: char| c.is_ascii_hexdigit())
.try_map(|input| u8::from_str_radix(input, 16))
.parse_next(input)
}
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