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 (
     8  	"errors"
     9  	_ "unsafe" // for linkname
    10  )
    11  
    12  //go:linkname executablePath
    13  var executablePath string // set by ../runtime/os_darwin.go
    14  
    15  var initCwd, initCwdErr = Getwd()
    16  
    17  func executable() (string, error) {
    18  	ep := executablePath
    19  	if len(ep) == 0 {
    20  		return ep, errors.New("cannot find executable path")
    21  	}
    22  	if ep[0] != '/' {
    23  		if initCwdErr != nil {
    24  			return ep, initCwdErr
    25  		}
    26  		if len(ep) > 2 && ep[0:2] == "./" {
    27  			// skip "./"
    28  			ep = ep[2:]
    29  		}
    30  		ep = initCwd + "/" + ep
    31  	}
    32  	return ep, nil
    33  }
    34
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