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98 lines
3.5 KiB
98 lines
3.5 KiB
// 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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