github.com/insionng/yougam@v0.0.0-20170714101924-2bc18d833463/libraries/golang/protobuf/protoc-gen-go/main.go (about)

     1  // Go support for Protocol Buffers - Google's data interchange format
     2  //
     3  // Copyright 2010 The Go Authors.  All rights reserved.
     4  // https://yougam/libraries/golang/protobuf
     5  //
     6  // Redistribution and use in source and binary forms, with or without
     7  // modification, are permitted provided that the following conditions are
     8  // met:
     9  //
    10  //     * Redistributions of source code must retain the above copyright
    11  // notice, this list of conditions and the following disclaimer.
    12  //     * Redistributions in binary form must reproduce the above
    13  // copyright notice, this list of conditions and the following disclaimer
    14  // in the documentation and/or other materials provided with the
    15  // distribution.
    16  //     * Neither the name of Google Inc. nor the names of its
    17  // contributors may be used to endorse or promote products derived from
    18  // this software without specific prior written permission.
    19  //
    20  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    21  // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    22  // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
    23  // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
    24  // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    25  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
    26  // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
    27  // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
    28  // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    29  // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    30  // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    31  
    32  // protoc-gen-go is a plugin for the Google protocol buffer compiler to generate
    33  // Go code.  Run it by building this program and putting it in your path with
    34  // the name
    35  // 	protoc-gen-go
    36  // That word 'go' at the end becomes part of the option string set for the
    37  // protocol compiler, so once the protocol compiler (protoc) is installed
    38  // you can run
    39  // 	protoc --go_out=output_directory input_directory/file.proto
    40  // to generate Go bindings for the protocol defined by file.proto.
    41  // With that input, the output will be written to
    42  // 	output_directory/file.pb.go
    43  //
    44  // The generated code is documented in the package comment for
    45  // the library.
    46  //
    47  // See the README and documentation for protocol buffers to learn more:
    48  // 	https://developers.google.com/protocol-buffers/
    49  package main
    50  
    51  import (
    52  	"io/ioutil"
    53  	"os"
    54  
    55  	"github.com/insionng/yougam/libraries/golang/protobuf/proto"
    56  	"github.com/insionng/yougam/libraries/golang/protobuf/protoc-gen-go/generator"
    57  )
    58  
    59  func main() {
    60  	// Begin by allocating a generator. The request and response structures are stored there
    61  	// so we can do error handling easily - the response structure contains the field to
    62  	// report failure.
    63  	g := generator.New()
    64  
    65  	data, err := ioutil.ReadAll(os.Stdin)
    66  	if err != nil {
    67  		g.Error(err, "reading input")
    68  	}
    69  
    70  	if err := proto.Unmarshal(data, g.Request); err != nil {
    71  		g.Error(err, "parsing input proto")
    72  	}
    73  
    74  	if len(g.Request.FileToGenerate) == 0 {
    75  		g.Fail("no files to generate")
    76  	}
    77  
    78  	g.CommandLineParameters(g.Request.GetParameter())
    79  
    80  	// Create a wrapped version of the Descriptors and EnumDescriptors that
    81  	// point to the file that defines them.
    82  	g.WrapTypes()
    83  
    84  	g.SetPackageNames()
    85  	g.BuildTypeNameMap()
    86  
    87  	g.GenerateAllFiles()
    88  
    89  	// Send back the results.
    90  	data, err = proto.Marshal(g.Response)
    91  	if err != nil {
    92  		g.Error(err, "failed to marshal output proto")
    93  	}
    94  	_, err = os.Stdout.Write(data)
    95  	if err != nil {
    96  		g.Error(err, "failed to write output proto")
    97  	}
    98  }