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