-
Notifications
You must be signed in to change notification settings - Fork 0
/
manifest.go
51 lines (45 loc) · 1.05 KB
/
manifest.go
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
package generate
import (
_ "embed"
"encoding/json"
"errors"
"fmt"
"os"
)
//go:embed manifest.json
var ManifestEmbed []byte
type Manifest struct {
Schema string `json:"schema"`
}
var ErrSchemaMismatch = errors.New("schema mismatch")
func ReadManifest(manPath string) (manifest Manifest, err error) {
if err := json.Unmarshal(ManifestEmbed, &manifest); err != nil {
panic(err)
}
if f, err := os.Open(manPath); err != nil {
if !errors.Is(err, os.ErrNotExist) {
return manifest, fmt.Errorf("open %s: %w", historyData, err)
}
} else {
var stored Manifest
defer f.Close()
if err = json.NewDecoder(f).Decode(&stored); err != nil {
return manifest, fmt.Errorf("decode %s: %w", historyData, err)
}
if stored.Schema != manifest.Schema {
return stored, ErrSchemaMismatch
}
}
return manifest, nil
}
func WriteManifest(manPath string, manifest Manifest) error {
f, err := os.Create(manPath)
if err != nil {
return err
}
defer f.Close()
je := json.NewEncoder(f)
je.SetEscapeHTML(false)
je.SetIndent("", "")
return je.Encode(manifest)
}