forked from larrymyers/protoc-gen-twirp_typescript
/
main.go
102 lines (78 loc) · 2 KB
/
main.go
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package main
import (
"io"
"io/ioutil"
"os"
"strings"
"github.com/golang/protobuf/proto"
plugin "github.com/golang/protobuf/protoc-gen-go/plugin"
"github.com/harund/protoc-gen-twirp_typescript/generator"
)
func main() {
req := readRequest(os.Stdin)
writeResponse(os.Stdout, generate(req))
}
func readRequest(r io.Reader) *plugin.CodeGeneratorRequest {
data, err := ioutil.ReadAll(r)
if err != nil {
panic(err)
}
req := new(plugin.CodeGeneratorRequest)
if err = proto.Unmarshal(data, req); err != nil {
panic(err)
}
if len(req.FileToGenerate) == 0 {
panic(err)
}
return req
}
func generate(in *plugin.CodeGeneratorRequest) *plugin.CodeGeneratorResponse {
resp := &plugin.CodeGeneratorResponse{}
for _, f := range in.GetProtoFile() {
// skip google/protobuf/timestamp, we don't do any special serialization for jsonpb.
if *f.Name == "google/protobuf/timestamp.proto" {
continue
}
cf, err := generator.CreateClientAPI(f)
if err != nil {
resp.Error = proto.String(err.Error())
return resp
}
resp.File = append(resp.File, cf)
}
resp.File = append(resp.File, generator.RuntimeLibrary())
params := getParameters(in)
if pkgName, ok := params["package_name"]; ok {
idx, err := generator.CreatePackageIndex(resp.File)
if err != nil {
resp.Error = proto.String(err.Error())
return resp
}
resp.File = append(resp.File, idx)
resp.File = append(resp.File, generator.CreateTSConfig())
resp.File = append(resp.File, generator.CreatePackageJSON(pkgName))
}
return resp
}
func writeResponse(w io.Writer, resp *plugin.CodeGeneratorResponse) {
data, err := proto.Marshal(resp)
if err != nil {
panic(err)
}
_, err = w.Write(data)
if err != nil {
}
}
type Params map[string]string
func getParameters(in *plugin.CodeGeneratorRequest) Params {
params := make(Params)
if in.Parameter == nil {
return params
}
pairs := strings.Split(*in.Parameter, ",")
for _, pair := range pairs {
kv := strings.Split(pair, "=")
params[kv[0]] = kv[1]
}
return params
}