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use std::ops::Range;
#[derive(Debug, Clone, PartialEq)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub struct Emotes {
pub id: usize,
pub ranges: Vec<Range<u16>>,
}
impl Emotes {
pub(in crate) fn parse<'a>(input: &'a str) -> impl Iterator<Item = Self> + 'a {
input
.split_terminator('/')
.filter_map(|s| Self::get_parts(s, ':'))
.filter_map(|(head, tail)| {
Some(Self {
id: head.parse().ok()?,
ranges: Self::get_ranges(&tail).collect(),
})
})
}
#[inline]
fn get_ranges<'a>(tail: &'a str) -> impl Iterator<Item = Range<u16>> + 'a {
tail.split_terminator(',')
.map(|s| Self::get_parts(s, '-'))
.filter_map(move |parts| {
let (start, end) = parts?;
let (start, end) = (start.parse().ok()?, end.parse().ok()?);
Some(Range { start, end })
})
}
#[inline(always)]
fn get_parts(input: &str, sep: char) -> Option<(&str, &str)> {
let mut s = input.split_terminator(sep);
Some((s.next()?, s.next()?))
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
#[allow(clippy::unreadable_literal)]
fn parse_emotes() {
macro_rules! emote {
($id:expr, $($r:expr),* $(,)?) => {
Emotes {
id: $id,
ranges: vec![$($r),*]
}
};
}
let inputs = &[
(
"25:0-4,6-10,12-16",
vec![
emote!(25, (0..4), (6..10), (12..16)),
],
),
(
"25:0-4",
vec![
emote!(25, (0..4)),
],
),
(
"1077966:0-6/25:8-12",
vec![
emote!(1077966, (0..6)),
emote!(25, (8..12)),
],
),
(
"25:0-4,6-10/33:12-19",
vec![
emote!(25, (0..4), (6..10)),
emote!(33, (12..19)),
],
),
(
"25:0-4,15-19/33:6-13",
vec![
emote!(25, (0..4), (15..19)),
emote!(33, (6..13)),
],
),
(
"33:0-7/25:9-13,15-19",
vec![
emote!(33, (0..7)),
emote!(25, (9..13), (15..19)),
],
),
];
for (input, expect) in inputs {
let emotes = Emotes::parse(&input).collect::<Vec<_>>();
assert_eq!(emotes.len(), expect.len());
assert_eq!(emotes, *expect);
}
}
}