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-rw-r--r--src/cmd/api/run.go72
1 files changed, 72 insertions, 0 deletions
diff --git a/src/cmd/api/run.go b/src/cmd/api/run.go
new file mode 100644
index 0000000..ecb1d0f
--- /dev/null
+++ b/src/cmd/api/run.go
@@ -0,0 +1,72 @@
+// 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"
+ exec "internal/execabs"
+ "log"
+ "os"
+ "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, ",")
+}