func (repo *DiskRepository) ObjectFromShortOid(short string) (objects.Object, error) {
l := len(short)
if l < 4 || l > objects.OidHexSize {
return nil, fmt.Errorf("fatal: Not a valid object name %s", short)
}
// don't bother with directories if we know the full SHA
if l == objects.OidHexSize {
oid, err := objects.OidFromString(short)
if err != nil {
return nil, fmt.Errorf("fatal: Not a valid object name %s", short)
}
return repo.ObjectFromOid(oid)
}
head, tail := short[:2], short[2:]
root := path.Join(repo.path, DefaultObjectsDir, head)
var matching []*objects.ObjectId
e := filepath.Walk(root, func(path string, info os.FileInfo, err error) error {
// root doesn't exist, or there was a problem reading it
if err != nil {
return err
}
if !info.IsDir() {
name := info.Name()
if strings.HasPrefix(name, tail) {
if oid, err := objects.OidFromString(head + name); err == nil {
matching = append(matching, oid)
}
}
}
return nil
})
if e != nil {
if os.IsNotExist(e) {
loadPacks(repo)
if obj, ok := parse.UnpackFromShortOid(repo.packs, short); ok {
return obj, nil
}
}
return nil, e
}
if len(matching) != 1 {
return nil, fmt.Errorf("fatal: Ambiguous object name %s", short)
}
return repo.ObjectFromOid(matching[0])
}
// ParseOid reads the next objects.OidHexSize bytes from the
// Reader and places the resulting object id in oid.
func (p *objectIdParser) ParseOid() *objects.ObjectId {
hex := string(p.Consume(objects.OidHexSize))
oid, e := objects.OidFromString(hex)
if e != nil {
util.PanicErrf("expected: hex string of size %d", objects.OidHexSize)
}
return oid
}
func (repo *DiskRepository) LooseObjectIds() (oids []*objects.ObjectId, err error) {
objectsRoot := path.Join(repo.path, DefaultObjectsDir)
oids = make([]*objects.ObjectId, 0)
//look in each objectsDir and make ObjectIds out of the files there.
err = filepath.Walk(objectsRoot, func(path string, info os.FileInfo, errr error) error {
if name := info.Name(); name == "info" || name == "pack" {
return filepath.SkipDir
} else if !info.IsDir() {
hash := filepath.Base(filepath.Dir(path)) + name
var oid *objects.ObjectId
if oid, err = objects.OidFromString(hash); err != nil {
return err
}
oids = append(oids, oid)
}
return nil
})
return
}