-
Notifications
You must be signed in to change notification settings - Fork 0
/
reader.go
59 lines (54 loc) · 1.4 KB
/
reader.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
package itermultipart
import (
"errors"
"io"
"iter"
"mime/multipart"
"net/http"
)
// PartsFromReader reads each part from the provided [multipart.Reader] and yields it to the caller.
// If raw is true, it reads the raw part using [multipart.Reader.NextRawPart].
// Note that [Part] becomes invalid on the next iteration so reference to it must not be held.
func PartsFromReader(r *multipart.Reader, raw bool) iter.Seq2[*Part, error] {
return func(yield func(*Part, error) bool) {
p := new(Part)
for {
var part *multipart.Part
var err error
if raw {
part, err = r.NextRawPart()
} else {
part, err = r.NextPart()
}
switch {
case errors.Is(err, io.EOF):
return
case errors.Is(err, nil):
// pass
default:
yield(nil, err)
return
}
p.Reset()
p.Header = part.Header
p.Content = part
next := yield(p, nil)
part.Close()
if !next {
return
}
}
}
}
// PartsFromRequest reads each part from the http request and yields it to the caller.
// If raw is true, it reads the raw part using [multipart.Part.NextRawPart].
// Note that [Part] becomes invalid on the next iteration so reference to it must not be held.
func PartsFromRequest(r *http.Request, raw bool) iter.Seq2[*Part, error] {
reader, err := r.MultipartReader()
if err != nil {
return func(yield func(*Part, error) bool) {
yield(nil, err)
}
}
return PartsFromReader(reader, raw)
}