diff options
Diffstat (limited to 'object.go')
| -rw-r--r-- | object.go | 26 |
1 files changed, 26 insertions, 0 deletions
@@ -22,6 +22,7 @@ type Object interface { Id() *Oid Type() ObjectType Owner() *Repository + Peel(t ObjectType) (Object, error) } type gitObject struct { @@ -69,6 +70,31 @@ func (o *gitObject) Free() { C.git_object_free(o.ptr) } +// Peel recursively peels an object until an object of the specified type is met. +// +// If the query cannot be satisfied due to the object model, ErrInvalidSpec +// will be returned (e.g. trying to peel a blob to a tree). +// +// If you pass ObjectAny as the target type, then the object will be peeled +// until the type changes. A tag will be peeled until the referenced object +// is no longer a tag, and a commit will be peeled to a tree. Any other object +// type will return ErrInvalidSpec. +// +// If peeling a tag we discover an object which cannot be peeled to the target +// type due to the object model, an error will be returned. +func (o *gitObject) Peel(t ObjectType) (Object, error) { + var cobj *C.git_object + + runtime.LockOSThread() + defer runtime.UnlockOSThread() + + if err := C.git_object_peel(&cobj, o.ptr, C.git_otype(t)); err < 0 { + return nil, MakeGitError(err) + } + + return allocObject(cobj, o.repo), nil +} + func allocObject(cobj *C.git_object, repo *Repository) Object { obj := gitObject{ ptr: cobj, |