1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
package object
import (
"errors"
"fmt"
"lindenii.org/go/furgit/object/blob"
"lindenii.org/go/furgit/object/commit"
"lindenii.org/go/furgit/object/header"
"lindenii.org/go/furgit/object/id"
"lindenii.org/go/furgit/object/typ"
)
// ErrSizeMismatch indicates a mismatch
// between the size declared in the object header
// and the size of the object body.
var ErrSizeMismatch = errors.New("object: size mismatch")
// ParseWithHeader parses a loose object
// in "type size\x00body" format.
//
//nolint:ireturn
func ParseWithHeader(raw []byte, objectFormat id.ObjectFormat) (Object, error) {
ty, size, headerLen, err := header.Parse(raw)
if err != nil {
return nil, err //nolint:wrapcheck
}
body := raw[headerLen:]
if uint64(len(body)) != size {
return nil, fmt.Errorf("%w: header declares %d bytes, body has %d", ErrSizeMismatch, size, len(body))
}
return ParseWithoutHeader(ty, body, objectFormat)
}
// ParseWithoutHeader parses a typed object body.
//
//nolint:ireturn
func ParseWithoutHeader(ty typ.Type, body []byte, objectFormat id.ObjectFormat) (Object, error) {
switch ty {
case typ.TypeBlob:
return blob.Parse(body) //nolint:wrapcheck
case typ.TypeTree:
panic("TODO")
case typ.TypeCommit:
return commit.Parse(body, objectFormat) //nolint:wrapcheck
case typ.TypeTag:
panic("TODO")
case typ.TypeUnknown:
return nil, typ.ErrInvalidType
default:
return nil, typ.ErrInvalidType
}
}
|
