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// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// protoc-gen-go is a plugin for the Google protocol buffer compiler to generate
// Go code. Install it by building this program and making it accessible within
// your PATH with the name:
// protoc-gen-go
//
// The 'go' suffix becomes part of the argument for the protocol compiler,
// such that it can be invoked as:
// protoc --go_out=paths=source_relative:. path/to/file.proto
//
// This generates Go bindings for the protocol buffer defined by file.proto.
// With that input, the output will be written to:
// path/to/file.pb.go
//
// See the README and documentation for protocol buffers to learn more:
// https://developers.google.com/protocol-buffers/
package main
import (
"flag"
"fmt"
"strings"
"github.com/golang/protobuf/internal/gengogrpc"
gengo "google.golang.org/protobuf/cmd/protoc-gen-go/internal_gengo"
"google.golang.org/protobuf/compiler/protogen"
)
func main() {
var (
flags flag.FlagSet
plugins = flags.String("plugins", "", "list of plugins to enable (supported values: grpc)")
importPrefix = flags.String("import_prefix", "", "prefix to prepend to import paths")
)
importRewriteFunc := func(importPath protogen.GoImportPath) protogen.GoImportPath {
switch importPath {
case "context", "fmt", "math":
return importPath
}
if *importPrefix != "" {
return protogen.GoImportPath(*importPrefix) + importPath
}
return importPath
}
protogen.Options{
ParamFunc: flags.Set,
ImportRewriteFunc: importRewriteFunc,
}.Run(func(gen *protogen.Plugin) error {
grpc := false
for _, plugin := range strings.Split(*plugins, ",") {
switch plugin {
case "grpc":
grpc = true
case "":
default:
return fmt.Errorf("protoc-gen-go: unknown plugin %q", plugin)
}
}
for _, f := range gen.Files {
if !f.Generate {
continue
}
g := gengo.GenerateFile(gen, f)
if grpc {
gengogrpc.GenerateFileContent(gen, f, g)
}
}
gen.SupportedFeatures = gengo.SupportedFeatures
return nil
})
}
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