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// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build ignore
// The run program is invoked via the dist tool.
// To invoke manually: go tool dist test -run api --no-rebuild
package main
import (
"fmt"
"log"
"os"
"os/exec"
"path/filepath"
"runtime"
"strings"
)
func goCmd() string {
var exeSuffix string
if runtime.GOOS == "windows" {
exeSuffix = ".exe"
}
path := filepath.Join(runtime.GOROOT(), "bin", "go"+exeSuffix)
if _, err := os.Stat(path); err == nil {
return path
}
return "go"
}
var goroot string
func main() {
log.SetFlags(0)
goroot = os.Getenv("GOROOT") // should be set by run.{bash,bat}
if goroot == "" {
log.Fatal("No $GOROOT set.")
}
apiDir := filepath.Join(goroot, "api")
out, err := exec.Command(goCmd(), "tool", "api",
"-c", findAPIDirFiles(apiDir),
"-next", filepath.Join(apiDir, "next.txt"),
"-except", filepath.Join(apiDir, "except.txt")).CombinedOutput()
if err != nil {
log.Fatalf("Error running API checker: %v\n%s", err, out)
}
fmt.Print(string(out))
}
// findAPIDirFiles returns a comma-separated list of Go API files
// (go1.txt, go1.1.txt, etc.) located in apiDir.
func findAPIDirFiles(apiDir string) string {
dir, err := os.Open(apiDir)
if err != nil {
log.Fatal(err)
}
defer dir.Close()
fs, err := dir.Readdirnames(-1)
if err != nil {
log.Fatal(err)
}
var apiFiles []string
for _, fn := range fs {
if strings.HasPrefix(fn, "go1") {
apiFiles = append(apiFiles, filepath.Join(apiDir, fn))
}
}
return strings.Join(apiFiles, ",")
}
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