github.com/goproxy0/go@v0.0.0-20171111080102-49cc0c489d2c/src/cmd/api/run.go (about)

     1  // Copyright 2013 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // +build ignore
     6  
     7  // The run program is invoked via the dist tool.
     8  // To invoke manually: go tool dist test -run api --no-rebuild
     9  package main
    10  
    11  import (
    12  	"fmt"
    13  	"log"
    14  	"os"
    15  	"os/exec"
    16  	"path/filepath"
    17  	"runtime"
    18  )
    19  
    20  func goCmd() string {
    21  	var exeSuffix string
    22  	if runtime.GOOS == "windows" {
    23  		exeSuffix = ".exe"
    24  	}
    25  	path := filepath.Join(runtime.GOROOT(), "bin", "go"+exeSuffix)
    26  	if _, err := os.Stat(path); err == nil {
    27  		return path
    28  	}
    29  	return "go"
    30  }
    31  
    32  var goroot string
    33  
    34  func main() {
    35  	log.SetFlags(0)
    36  	goroot = os.Getenv("GOROOT") // should be set by run.{bash,bat}
    37  	if goroot == "" {
    38  		log.Fatal("No $GOROOT set.")
    39  	}
    40  
    41  	out, err := exec.Command(goCmd(), "tool", "api",
    42  		"-c", file("go1", "go1.1", "go1.2", "go1.3", "go1.4", "go1.5", "go1.6", "go1.7", "go1.8", "go1.9"),
    43  		"-next", file("next"),
    44  		"-except", file("except")).CombinedOutput()
    45  	if err != nil {
    46  		log.Fatalf("Error running API checker: %v\n%s", err, out)
    47  	}
    48  	fmt.Print(string(out))
    49  }
    50  
    51  // file expands s to $GOROOT/api/s.txt.
    52  // If there are more than 1, they're comma-separated.
    53  func file(s ...string) string {
    54  	if len(s) > 1 {
    55  		return file(s[0]) + "," + file(s[1:]...)
    56  	}
    57  	return filepath.Join(goroot, "api", s[0]+".txt")
    58  }