Fast implementation of Git in pure Go
codeberg.org/lindenii/furgit
git
go
internal/peel: Purge
-50
-50
internal/peel/peel.go
-50
internal/peel/peel.go
···
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// Package peel peels Git object references through annotated tags.
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package peel
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import (
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stderrors "errors"
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giterrors "codeberg.org/lindenii/furgit/errors"
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objectid "codeberg.org/lindenii/furgit/object/id"
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objectstore "codeberg.org/lindenii/furgit/object/store"
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"codeberg.org/lindenii/furgit/object/tag"
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objecttype "codeberg.org/lindenii/furgit/object/type"
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)
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// ToCommit peels annotated tags transitively until a commit is reached.
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func ToCommit(store objectstore.Reader, id objectid.ObjectID) (objectid.ObjectID, error) {
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for {
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ty, _, err := store.ReadHeader(id)
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if err != nil {
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if stderrors.Is(err, objectstore.ErrObjectNotFound) {
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return objectid.ObjectID{}, &giterrors.ObjectMissingError{OID: id}
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}
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return objectid.ObjectID{}, err
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}
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if ty != objecttype.TypeTag {
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if ty != objecttype.TypeCommit {
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return objectid.ObjectID{}, &giterrors.ObjectTypeError{OID: id, Got: ty, Want: objecttype.TypeCommit}
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}
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return id, nil
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}
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_, content, err := store.ReadBytesContent(id)
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if err != nil {
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if stderrors.Is(err, objectstore.ErrObjectNotFound) {
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return objectid.ObjectID{}, &giterrors.ObjectMissingError{OID: id}
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}
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return objectid.ObjectID{}, err
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}
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tag, err := tag.Parse(content, id.Algorithm())
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if err != nil {
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return objectid.ObjectID{}, err
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}
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id = tag.Target
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}
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}