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