1// Protocol Buffers for Go with Gadgets 2// 3// Copyright (c) 2013, The GoGo Authors. All rights reserved. 4// http://github.com/gogo/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// 17// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 29package main 30 31import ( 32 "fmt" 33 "os" 34 "os/exec" 35 "strings" 36 37 "github.com/gogo/protobuf/version" 38) 39 40func filter(ss []string, flag string) ([]string, string) { 41 s := make([]string, 0, len(ss)) 42 var v string 43 for i := range ss { 44 if strings.Contains(ss[i], flag) { 45 vs := strings.Split(ss[i], "=") 46 v = vs[1] 47 continue 48 } 49 s = append(s, ss[i]) 50 } 51 return s, v 52} 53 54func main() { 55 args, min := filter(os.Args[1:], "-version") 56 if !version.AtLeast(min) { 57 fmt.Printf("protoc version not high enough to parse this proto file\n") 58 return 59 } 60 gen := exec.Command("protoc", args...) 61 gen.Stderr = os.Stderr 62 gen.Stdout = os.Stdout 63 err := gen.Run() 64 if err != nil { 65 panic(err) 66 } 67} 68