blob: eeca42ba0d070ce51094c1a95c726349e64215d1 [file] [log] [blame]
// Protocol Buffers for Go with Gadgets
//
// Copyright (c) 2015, The GoGo Authors. All rights reserved.
// http://github.com/gogo/protobuf
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package command
import (
"fmt"
"go/format"
"io/ioutil"
"os"
"strings"
_ "github.com/gogo/protobuf/plugin/compare"
_ "github.com/gogo/protobuf/plugin/defaultcheck"
_ "github.com/gogo/protobuf/plugin/description"
_ "github.com/gogo/protobuf/plugin/embedcheck"
_ "github.com/gogo/protobuf/plugin/enumstringer"
_ "github.com/gogo/protobuf/plugin/equal"
_ "github.com/gogo/protobuf/plugin/face"
_ "github.com/gogo/protobuf/plugin/gostring"
_ "github.com/gogo/protobuf/plugin/marshalto"
_ "github.com/gogo/protobuf/plugin/oneofcheck"
_ "github.com/gogo/protobuf/plugin/populate"
_ "github.com/gogo/protobuf/plugin/size"
_ "github.com/gogo/protobuf/plugin/stringer"
"github.com/gogo/protobuf/plugin/testgen"
_ "github.com/gogo/protobuf/plugin/union"
_ "github.com/gogo/protobuf/plugin/unmarshal"
"github.com/gogo/protobuf/proto"
"github.com/gogo/protobuf/protoc-gen-gogo/generator"
_ "github.com/gogo/protobuf/protoc-gen-gogo/grpc"
plugin "github.com/gogo/protobuf/protoc-gen-gogo/plugin"
)
func Read() *plugin.CodeGeneratorRequest {
g := generator.New()
data, err := ioutil.ReadAll(os.Stdin)
if err != nil {
g.Error(err, "reading input")
}
if err := proto.Unmarshal(data, g.Request); err != nil {
g.Error(err, "parsing input proto")
}
if len(g.Request.FileToGenerate) == 0 {
g.Fail("no files to generate")
}
return g.Request
}
// filenameSuffix replaces the .pb.go at the end of each filename.
func GeneratePlugin(req *plugin.CodeGeneratorRequest, p generator.Plugin, filenameSuffix string) *plugin.CodeGeneratorResponse {
g := generator.New()
g.Request = req
if len(g.Request.FileToGenerate) == 0 {
g.Fail("no files to generate")
}
g.CommandLineParameters(g.Request.GetParameter())
g.WrapTypes()
g.SetPackageNames()
g.BuildTypeNameMap()
g.GeneratePlugin(p)
for i := 0; i < len(g.Response.File); i++ {
g.Response.File[i].Name = proto.String(
strings.Replace(*g.Response.File[i].Name, ".pb.go", filenameSuffix, -1),
)
}
if err := goformat(g.Response); err != nil {
g.Error(err)
}
return g.Response
}
func goformat(resp *plugin.CodeGeneratorResponse) error {
for i := 0; i < len(resp.File); i++ {
formatted, err := format.Source([]byte(resp.File[i].GetContent()))
if err != nil {
return fmt.Errorf("go format error: %v", err)
}
fmts := string(formatted)
resp.File[i].Content = &fmts
}
return nil
}
func Generate(req *plugin.CodeGeneratorRequest) *plugin.CodeGeneratorResponse {
// Begin by allocating a generator. The request and response structures are stored there
// so we can do error handling easily - the response structure contains the field to
// report failure.
g := generator.New()
g.Request = req
g.CommandLineParameters(g.Request.GetParameter())
// Create a wrapped version of the Descriptors and EnumDescriptors that
// point to the file that defines them.
g.WrapTypes()
g.SetPackageNames()
g.BuildTypeNameMap()
g.GenerateAllFiles()
if err := goformat(g.Response); err != nil {
g.Error(err)
}
testReq := proto.Clone(req).(*plugin.CodeGeneratorRequest)
testResp := GeneratePlugin(testReq, testgen.NewPlugin(), "pb_test.go")
for i := 0; i < len(testResp.File); i++ {
if strings.Contains(*testResp.File[i].Content, `//These tests are generated by github.com/gogo/protobuf/plugin/testgen`) {
g.Response.File = append(g.Response.File, testResp.File[i])
}
}
return g.Response
}
func Write(resp *plugin.CodeGeneratorResponse) {
g := generator.New()
// Send back the results.
data, err := proto.Marshal(resp)
if err != nil {
g.Error(err, "failed to marshal output proto")
}
_, err = os.Stdout.Write(data)
if err != nil {
g.Error(err, "failed to write output proto")
}
}