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package packfile
import "gopkg.in/src-d/go-git.v4/plumbing"
// ObjectToPack is a representation of an object that is going to be into a
// pack file.
type ObjectToPack struct {
// The main object to pack, it could be any object, including deltas
Object plumbing.EncodedObject
// Base is the object that a delta is based on (it could be also another delta).
// If the main object is not a delta, Base will be null
Base *ObjectToPack
// Original is the object that we can generate applying the delta to
// Base, or the same object as EncodedObject in the case of a non-delta
// object.
Original plumbing.EncodedObject
// Depth is the amount of deltas needed to resolve to obtain Original
// (delta based on delta based on ...)
Depth int
}
// newObjectToPack creates a correct ObjectToPack based on a non-delta object
func newObjectToPack(o plumbing.EncodedObject) *ObjectToPack {
return &ObjectToPack{
Object: o,
Original: o,
}
}
// newDeltaObjectToPack creates a correct ObjectToPack for a delta object, based on
// his base (could be another delta), the delta target (in this case called original),
// and the delta Object itself
func newDeltaObjectToPack(base *ObjectToPack, original, delta plumbing.EncodedObject) *ObjectToPack {
return &ObjectToPack{
Object: delta,
Base: base,
Original: original,
Depth: base.Depth + 1,
}
}
func (o *ObjectToPack) IsDelta() bool {
if o.Base != nil {
return true
}
return false
}
func (o *ObjectToPack) SetDelta(base *ObjectToPack, delta plumbing.EncodedObject) {
o.Object = delta
o.Base = base
o.Depth = base.Depth + 1
}
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