github.com/sanprasirt/go@v0.0.0-20170607001320-a027466e4b6d/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  )
    18  
    19  var goroot string
    20  
    21  func main() {
    22  	log.SetFlags(0)
    23  	goroot = os.Getenv("GOROOT") // should be set by run.{bash,bat}
    24  	if goroot == "" {
    25  		log.Fatal("No $GOROOT set.")
    26  	}
    27  
    28  	out, err := exec.Command("go", "tool", "api",
    29  		"-c", file("go1", "go1.1", "go1.2", "go1.3", "go1.4", "go1.5", "go1.6", "go1.7", "go1.8"),
    30  		"-next", file("next"),
    31  		"-except", file("except")).CombinedOutput()
    32  	if err != nil {
    33  		log.Fatalf("Error running API checker: %v\n%s", err, out)
    34  	}
    35  	fmt.Print(string(out))
    36  }
    37  
    38  // file expands s to $GOROOT/api/s.txt.
    39  // If there are more than 1, they're comma-separated.
    40  func file(s ...string) string {
    41  	if len(s) > 1 {
    42  		return file(s[0]) + "," + file(s[1:]...)
    43  	}
    44  	return filepath.Join(goroot, "api", s[0]+".txt")
    45  }