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60ffa47f4f
This creates some diff to the *.pb.go files to note that
in the "options".
You can dump the gzipped blob with the following program (thanks
StackOverflow!):
```go
package main
import (
"bytes"
"compress/gzip"
"encoding/json"
"fmt"
"os"
"io/ioutil"
proto "github.com/golang/protobuf/proto"
dpb "github.com/golang/protobuf/protoc-gen-go/descriptor"
)
func main() {
m := map[string][]byte{
"before": blobv1,
"after": blobv2,
}
arg := os.Args[1]
dump(m[arg])
}
func dump(bytes []byte) {
fd, err := decodeFileDesc(bytes)
if err != nil {
panic(err)
}
b, err := json.MarshalIndent(fd, "", " ")
if err != nil {
panic(err)
}
fmt.Println(string(b))
}
// decompress does gzip decompression.
func decompress(b []byte) ([]byte, error) {
r, err := gzip.NewReader(bytes.NewReader(b))
if err != nil {
return nil, fmt.Errorf("bad gzipped descriptor: %v", err)
}
out, err := ioutil.ReadAll(r)
if err != nil {
return nil, fmt.Errorf("bad gzipped descriptor: %v", err)
}
return out, nil
}
func decodeFileDesc(enc []byte) (*dpb.FileDescriptorProto, error) {
raw, err := decompress(enc)
if err != nil {
return nil, fmt.Errorf("failed to decompress enc: %v", err)
}
fd := new(dpb.FileDescriptorProto)
if err := proto.Unmarshal(raw, fd); err != nil {
return nil, fmt.Errorf("bad descriptor: %v", err)
}
return fd, nil
}
```