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99 lines
3.5 KiB
Go
99 lines
3.5 KiB
Go
// Go support for Protocol Buffers - Google's data interchange format
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//
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// Copyright 2010 The Go Authors. All rights reserved.
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// https://github.com/golang/protobuf
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// protoc-gen-go is a plugin for the Google protocol buffer compiler to generate
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// Go code. Run it by building this program and putting it in your path with
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// the name
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// protoc-gen-go
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// That word 'go' at the end becomes part of the option string set for the
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// protocol compiler, so once the protocol compiler (protoc) is installed
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// you can run
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// protoc --go_out=output_directory input_directory/file.proto
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// to generate Go bindings for the protocol defined by file.proto.
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// With that input, the output will be written to
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// output_directory/file.pb.go
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//
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// The generated code is documented in the package comment for
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// the library.
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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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"io/ioutil"
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"os"
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"github.com/golang/protobuf/proto"
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"github.com/golang/protobuf/protoc-gen-go/generator"
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)
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func main() {
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// Begin by allocating a generator. The request and response structures are stored there
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// so we can do error handling easily - the response structure contains the field to
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// report failure.
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g := generator.New()
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data, err := ioutil.ReadAll(os.Stdin)
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if err != nil {
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g.Error(err, "reading input")
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}
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if err := proto.Unmarshal(data, g.Request); err != nil {
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g.Error(err, "parsing input proto")
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}
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if len(g.Request.FileToGenerate) == 0 {
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g.Fail("no files to generate")
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}
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g.CommandLineParameters(g.Request.GetParameter())
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// Create a wrapped version of the Descriptors and EnumDescriptors that
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// point to the file that defines them.
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g.WrapTypes()
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g.SetPackageNames()
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g.BuildTypeNameMap()
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g.GenerateAllFiles()
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// Send back the results.
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data, err = proto.Marshal(g.Response)
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if err != nil {
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g.Error(err, "failed to marshal output proto")
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}
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_, err = os.Stdout.Write(data)
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if err != nil {
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g.Error(err, "failed to write output proto")
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}
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}
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