libgo/go/os/executable_darwin.go

   1 // Copyright 2016 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 package os
   6
   7 import "errors"
   8
   9 var executablePath string // set by ../runtime/os_darwin.go
  10
  11 var initCwd, initCwdErr = Getwd()
  12
  13 func executable() (string, error) {
  14         ep := executablePath
  15         if len(ep) == 0 {
  16                 return ep, errors.New("cannot find executable path")
  17         }
  18         if ep[0] != '/' {
  19                 if initCwdErr != nil {
  20                         return ep, initCwdErr
  21                 }
  22                 if len(ep) > 2 && ep[0:2] == "./" {
  23                         // skip "./"
  24                         ep = ep[2:]
  25                 }
  26                 ep = initCwd + "/" + ep
  27         }
  28         return ep, nil
  29 }