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
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
package packidx_test
import (
"os"
"strconv"
"strings"
"testing"
"lindenii.org/go/furgit/internal/format/packidx"
"lindenii.org/go/furgit/internal/testgit"
"lindenii.org/go/furgit/object/id"
)
// makeGitPack seeds a repository,
// packs the seeded objects with git pack-objects,
// and returns the repository, the artifact path prefix,
// and the packed object IDs.
func makeGitPack(t *testing.T, objectFormat id.ObjectFormat) (*testgit.Repo, string, []id.ObjectID) {
t.Helper()
repo, err := testgit.NewRepo(t, testgit.RepoOptions{ObjectFormat: objectFormat})
if err != nil {
t.Fatalf("NewRepo: %v", err)
}
seeded, err := repo.SeedHistory(t)
if err != nil {
t.Fatalf("SeedHistory: %v", err)
}
oids := seeded.All()
prefix, err := repo.PackObjects(t, oids, testgit.PackObjectsOptions{})
if err != nil {
t.Fatalf("PackObjects: %v", err)
}
return repo, prefix, oids
}
// parseGitIdxFile reads and parses one .idx file produced by git.
func parseGitIdxFile(t *testing.T, prefix string, objectFormat id.ObjectFormat) ([]byte, packidx.Packidx) {
t.Helper()
data, err := os.ReadFile(prefix + ".idx") //nolint:gosec
if err != nil {
t.Fatalf("ReadFile: %v", err)
}
idx, err := packidx.Parse(data, objectFormat.Size())
if err != nil {
t.Fatalf("Parse: %v", err)
}
return data, idx
}
// gitPackOffsets extracts the object-to-offset mapping
// from git verify-pack -v output.
func gitPackOffsets(t *testing.T, repo *testgit.Repo, idxPath string, objectFormat id.ObjectFormat) map[string]uint64 {
t.Helper()
out, err := repo.VerifyPack(t, idxPath)
if err != nil {
t.Fatalf("VerifyPack: %v", err)
}
hexLen := objectFormat.HexLen()
offsets := make(map[string]uint64)
for line := range strings.Lines(string(out)) {
fields := strings.Fields(line)
if len(fields) < 5 || len(fields[0]) != hexLen {
continue
}
offset, err := strconv.ParseUint(fields[4], 10, 64)
if err != nil {
continue
}
offsets[fields[0]] = offset
}
return offsets
}
|
