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// Go support for Protocol Buffers - Google's data interchange format
//
// Copyright 2010 The Go Authors. All rights reserved.
// https://github.com/golang/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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// 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.
// protoc-gen-go is a plugin for the Google protocol buffer compiler to generate
// Go code. Run it by building this program and putting it in your path with
// the name
// protoc-gen-go
// That word 'go' at the end becomes part of the option string set for the
// protocol compiler, so once the protocol compiler (protoc) is installed
// you can run
// protoc --go_out=output_directory input_directory/file.proto
// to generate Go bindings for the protocol defined by file.proto.
// With that input, the output will be written to
// output_directory/file.pb.go
//
// The generated code is documented in the package comment for
// the library.
//
// See the README and documentation for protocol buffers to learn more:
// https://developers.google.com/protocol-buffers/
package main
import (
"io/ioutil"
"os"
"github.com/golang/protobuf/proto"
"github.com/golang/protobuf/protoc-gen-go/generator"
)
func main() {
// 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()
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")
}
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()
// Send back the results.
data, err = proto.Marshal(g.Response)
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")
}
}
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