/
release.go
103 lines (86 loc) · 2.07 KB
/
release.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
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
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
package fmm
import (
"archive/zip"
"encoding/json"
"errors"
"io"
"os"
"path/filepath"
"strings"
)
type Release struct {
Name string
Dependencies []*Dependency
Path string
Version Version
}
func releaseFromFile(path string) (*Release, error) {
info, err := os.Stat(path)
if err != nil {
return nil, errors.Join(errors.New("unable to get file info"), err)
}
filename := filepath.Base(path)
var infoJson infoJson
if info.Mode().IsRegular() {
infoJson, err = readZipInfoJson(path)
} else if info.IsDir() || isSymlink(info) {
file, err := os.Open(filepath.Join(path, "info.json"))
if err == nil {
infoJson, err = readInfoJson(file)
}
}
if err != nil {
return nil, errors.Join(errors.New("error when parsing info.json"), err)
}
ident := NewModIdent(filename)
if ident.Name == infoJson.Name && infoJson.Version.Cmp(ident.Version) != VersionEq {
return nil, errors.New("invalid release filename")
}
return &Release{
infoJson.Name,
infoJson.Dependencies,
filename,
infoJson.Version,
}, nil
}
type infoJson struct {
Dependencies []*Dependency `json:"dependencies"`
Name string `json:"name"`
Version Version `json:"version"`
FactorioVersion Version `json:"factorio_version"`
}
func isSymlink(info os.FileInfo) bool {
return info.Mode()&os.ModeSymlink > 0
}
func readInfoJson(rc io.ReadCloser) (infoJson, error) {
var infoJson infoJson
content, err := io.ReadAll(rc)
if err != nil {
return infoJson, err
}
err = json.Unmarshal(content, &infoJson)
return infoJson, err
}
func readZipInfoJson(path string) (infoJson, error) {
r, err := zip.OpenReader(path)
if err != nil {
return infoJson{}, err
}
var file *zip.File
for _, existing := range r.File {
parts := strings.Split(existing.Name, "/")
if len(parts) == 2 && parts[1] == "info.json" {
file = existing
break
}
}
if file == nil {
return infoJson{}, errors.New("could not locate info.json file")
}
rc, err := file.Open()
if err != nil {
return infoJson{}, err
}
defer rc.Close()
return readInfoJson(rc)
}