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bibclean: slugs, and whether the one a record has still names it

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funkpower
2026-09-19 14:23:36 -04:00
parent 7fa610c578
commit 14e1fcf3ef
16 changed files with 1342 additions and 34 deletions
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crates/cueseg/src/lib.rs
+1 -25
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@@ -64,38 +64,14 @@ pub fn segment(cues: &[Cue], duration: f64) -> Vec<Segment> {
/// How many chapters a recording of this length should have.
pub fn target_chapter_count(duration: f64) -> usize {
let target = round_half_to_even(duration / TARGET_SECONDS_PER_CHAPTER);
let target = textkit::round_half_to_even(duration / TARGET_SECONDS_PER_CHAPTER);
(target as usize).clamp(MIN_CHAPTERS, MAX_CHAPTERS)
}
/// Round half to even, which is what the Python this was ported from does
/// and what Rust's own `round` does not: `round(2.5)` is 2 there and 3 here,
/// and a recording exactly two and a half chapters long would otherwise get a
/// different number of them.
fn round_half_to_even(value: f64) -> f64 {
let rounded = value.round();
if (value - value.trunc()).abs() == 0.5 && rounded % 2.0 != 0.0 {
rounded - value.signum()
} else {
rounded
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn rounding_goes_to_even_on_a_half() {
assert_eq!(round_half_to_even(0.5), 0.0);
assert_eq!(round_half_to_even(1.5), 2.0);
assert_eq!(round_half_to_even(2.5), 2.0);
assert_eq!(round_half_to_even(3.5), 4.0);
assert_eq!(round_half_to_even(-2.5), -2.0);
assert_eq!(round_half_to_even(2.4), 2.0);
assert_eq!(round_half_to_even(2.6), 3.0);
}
#[test]
fn the_chapter_count_follows_the_length_within_bounds() {
assert_eq!(target_chapter_count(0.0), MIN_CHAPTERS);