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
|
package header
import (
"bytes"
"strconv"
"codeberg.org/lindenii/furgit/object/typ"
)
// Parse parses a canonical loose-object header ("type size\x00").
func Parse(data []byte) (ty typ.Type, size int64, consumed int, ok bool) {
space := bytes.IndexByte(data, ' ')
if space <= 0 {
return typ.TypeInvalid, 0, 0, false
}
nulRel := bytes.IndexByte(data[space+1:], 0)
if nulRel < 0 {
return typ.TypeInvalid, 0, 0, false
}
nul := space + 1 + nulRel
ty, ok = typ.Parse(string(data[:space]))
if !ok {
return typ.TypeInvalid, 0, 0, false
}
sizeBytes := data[space+1 : nul]
if len(sizeBytes) == 0 {
return typ.TypeInvalid, 0, 0, false
}
size, err := strconv.ParseInt(string(sizeBytes), 10, 64)
if err != nil || size < 0 {
return typ.TypeInvalid, 0, 0, false
}
return ty, size, nul + 1, true
}
|
