/
corpus.go
98 lines (85 loc) · 1.72 KB
/
corpus.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
package corpus
import (
"embed"
"fmt"
"image"
"image/png"
"io/fs"
"os"
"path/filepath"
"runtime"
"golang.org/x/exp/maps"
)
//go:embed images/uninteresting images/testpatterns
var content embed.FS
type Corpus struct {
name string
images map[string]image.Image
}
func (c *Corpus) Images() []image.Image {
return maps.Values(c.images)
}
func (c *Corpus) ImagesMap() map[string]image.Image {
return c.images
}
func (c *Corpus) Name() string {
return c.name
}
var (
_, b, _, _ = runtime.Caller(0)
corpusRoot = filepath.Dir(b)
)
func LoadFS(path string) (*Corpus, error) {
c := &Corpus{
name: path,
images: make(map[string]image.Image),
}
err := filepath.Walk(
fmt.Sprintf("%s/images/%s", corpusRoot, path),
func(path string, info fs.FileInfo, err error) error {
if err != nil {
return err
}
return c.loadEntry(path, info)
})
return c, err
}
func LoadEmbedded(path string) (*Corpus, error) {
c := &Corpus{
name: path,
images: make(map[string]image.Image),
}
dirPath := fmt.Sprintf("images/%s", path)
dir, err := content.ReadDir(dirPath)
if err != nil {
return nil, err
}
for _, entry := range dir {
if err := c.loadPath(content.Open, dirPath+"/"+entry.Name()); err != nil {
return nil, err
}
}
return c, nil
}
func (c *Corpus) loadPath(open func(name string) (fs.File, error), path string) error {
f, err := open(path)
if err != nil {
return err
}
defer f.Close()
img, err := png.Decode(f)
if err != nil {
return err
}
key := filepath.Base(path)
c.images[key] = img
return nil
}
func (c *Corpus) loadEntry(path string, info fs.FileInfo) error {
if info.IsDir() {
return nil
}
return c.loadPath(func(name string) (fs.File, error) {
return os.Open(name)
}, path)
}