Struct PackIndex 

pub struct PackIndex {
    pub idx_path: PathBuf,
    pub pack_path: PathBuf,
    pub hash_bytes: usize,
    pub entries: Vec<PackIndexEntry>,
    pub fanout: [u32; 256],
}

Parsed data from a .idx file (version 2).

Fields

idx_path: PathBuf

Absolute path to the .idx file.

pack_path: PathBuf

Absolute path to the .pack file.

hash_bytes: usize

OID width in bytes (20 for SHA-1, 32 for SHA-256).

entries: Vec<PackIndexEntry>

Parsed entries in index order (sorted by OID).

fanout: [u32; 256]

256-entry first-byte fanout table: fanout[b] is the count of entries whose first OID byte is <= b. Enables O(log n) lookup via the OID’s first byte (matches Git’s find_pack_entry_one in packfile.c).

Implementations

impl PackIndex

pub fn find_offset(&self, oid: &ObjectId) -> Option<u64>

Find the offset in the .pack file for the given SHA-1 OID via the fanout table and binary search; returns None when the OID is not present.

Pack indexes containing SHA-256 OIDs are skipped here (callers handling SHA-256 should branch on PackIndex::hash_bytes).

pub fn contains(&self, oid: &ObjectId) -> bool

Whether this pack index contains the given SHA-1 OID.

Trait Implementations

impl Clone for PackIndex

fn clone(&self) -> PackIndex

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PackIndex

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.