fn dedup_query_against_local_data()

in deduplication/src/file_deduplication.rs [343:372]

• 26 lines of code
• 5 McCabe index (conditional complexity)

    fn dedup_query_against_local_data(
        &mut self,
        chunks: &[MerkleHash],
    ) -> Option<(usize, FileDataSequenceEntry, bool)> {
        // It's important for the defrag prevention to have a good estimate of the number of chunks in
        // a row that can be deduplicated, so this pulls through the
        if let Some(&base_idx) = self.new_data_hash_lookup.get(&chunks[0]) {
            let mut n_bytes = self.new_data[base_idx].data.len();

            let mut end_idx = base_idx + 1;
            for (i, chunk) in chunks.iter().enumerate().skip(1) {
                if let Some(&idx) = self.new_data_hash_lookup.get(chunk) {
                    if idx == base_idx + i {
                        end_idx = idx + 1;
                        n_bytes += self.new_data[idx].data.len();
                        continue;
                    }
                }
                break;
            }

            Some((
                end_idx - base_idx,
                FileDataSequenceEntry::new(MerkleHash::marker(), n_bytes, base_idx, end_idx),
                false,
            ))
        } else {
            None
        }
    }