Struct PackBuildOptions 

pub struct PackBuildOptions {
    pub thin: bool,
    pub delta: bool,
    pub window: usize,
    pub max_depth: usize,
    pub use_ofs_delta: bool,
    pub respect_islands: bool,
    pub reuse_deltas: bool,
}

Options controlling build_pack.

Fields

thin: bool

Build a thin pack: allow deltas whose base is reachable from the haves (so present on the peer) but not itself emitted in the pack. The base is referenced by REF_DELTA and the peer reconstructs the object from its own copy. Requires Self::delta to have any effect.

delta: bool

Emit delta-compressed objects (OFS_DELTA/REF_DELTA) for similar blobs instead of whole objects. When false the builder emits whole objects only (the phase-1 behavior).

window: usize

How many candidate bases (size-sorted neighbors) to consider per blob. 0 disables in-pack delta selection. Mirrors Git’s --window.

max_depth: usize

Cap delta chain length (number of edges). 0 stores all blobs whole. Mirrors Git’s --depth.

use_ofs_delta: bool

Use OFS_DELTA (offset-relative base) when the base precedes the target in the pack; otherwise REF_DELTA (base named by OID). Thin/external bases always use REF_DELTA regardless of this flag.

respect_islands: bool

Honor delta islands (pack.island config) when selecting bases, so a target only deltas against a base in a compatible (superset) island and the base preference is biased toward objects living in dominating islands.

Mirrors git pack-objects --delta-islands. When false (the default, preserving the prior behavior) islands are ignored entirely — equivalent to no pack.island config. Loading islands walks the ref graph, so this only does work when the repository actually configures islands.

reuse_deltas: bool

Reuse on-disk REF_DELTA/OFS_DELTA edges from existing packs when both the target and its recorded base are in this pack, instead of recomputing a fresh delta. Mirrors Git’s reuse_delta window-reuse path.

false (the default) preserves the prior behavior of always computing fresh deltas. Reuse only applies to SHA-1 packs (the reuse helpers read 20-byte index entries) and is skipped silently otherwise.

Trait Implementations

impl Clone for PackBuildOptions

fn clone(&self) -> PackBuildOptions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PackBuildOptions

impl Debug for PackBuildOptions

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

Formats the value using the given formatter.

impl Default for PackBuildOptions

fn default() -> Self

Returns the “default value” for a type.