blob: cf0a1862c0ae4872ba394c40848212c18f3822e8 (
plain)
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
|
package internal
import (
"bytes"
"compress/gzip"
"fmt"
"io/ioutil"
"github.com/golang/protobuf/proto"
"github.com/golang/protobuf/protoc-gen-go/descriptor"
)
// ExtractFile extracts a FileDescriptorProto from a gzip'd buffer.
// Note: function is copied from the github.com/golang/protobuf dependency:
// https://github.com/golang/protobuf/blob/9eb2c01ac278a5d89ce4b2be68fe4500955d8179/descriptor/descriptor.go#L50
func ExtractFile(gz []byte) (*descriptor.FileDescriptorProto, error) {
r, err := gzip.NewReader(bytes.NewReader(gz))
if err != nil {
return nil, fmt.Errorf("failed to open gzip reader: %v", err)
}
defer r.Close()
b, err := ioutil.ReadAll(r)
if err != nil {
return nil, fmt.Errorf("failed to uncompress descriptor: %v", err)
}
fd := &descriptor.FileDescriptorProto{}
if err := proto.Unmarshal(b, fd); err != nil {
return nil, fmt.Errorf("malformed FileDescriptorProto: %v", err)
}
return fd, nil
}
|