Method split_progress

plugins/pdb-ng/src/parser.rs:471–504

(
        original_fn: F,
        subpart: usize,
        subpart_weights: &[f64],
    )

    }

    pub(crate) fn split_progress<'b, F: Fn(usize, usize) -> Result<()> + 'b>(
        original_fn: F,
        subpart: usize,
        subpart_weights: &[f64],
    ) -> Box<dyn Fn(usize, usize) -> Result<()> + 'b> {
        // Normalize weights
        let weight_sum: f64 = subpart_weights.iter().sum();
        if weight_sum < 0.0001 {
            return Box::new(|_, _| Ok(()));
        }

        // Keep a running count of weights for the start
        let mut subpart_starts = vec![];
        let mut start = 0f64;
        for w in subpart_weights {
            subpart_starts.push(start);
            start += *w;
        }

        let subpart_start = subpart_starts[subpart] / weight_sum;
        let weight = subpart_weights[subpart] / weight_sum;

        Box::new(move |cur: usize, max: usize| {
            // Just use a large number for easy divisibility
            let steps = 1000000f64;
            let subpart_size = steps * weight;
            let subpart_progress = ((cur as f64) / (max as f64)) * subpart_size;

            original_fn(
                (subpart_start * steps + subpart_progress) as usize,
                steps as usize,
            )
        })
    }
}