osext.go raw

   1  // Copyright 2012 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  // Extensions to the standard "os" package.
   6  package osext // import "github.com/kardianos/osext"
   7  
   8  import "path/filepath"
   9  
  10  var cx, ce = executableClean()
  11  
  12  func executableClean() (string, error) {
  13  	p, err := executable()
  14  	return filepath.Clean(p), err
  15  }
  16  
  17  // Executable returns an absolute path that can be used to
  18  // re-invoke the current program.
  19  // It may not be valid after the current program exits.
  20  func Executable() (string, error) {
  21  	return cx, ce
  22  }
  23  
  24  // Returns same path as Executable, returns just the folder
  25  // path. Excludes the executable name and any trailing slash.
  26  func ExecutableFolder() (string, error) {
  27  	p, err := Executable()
  28  	if err != nil {
  29  		return "", err
  30  	}
  31  
  32  	return filepath.Dir(p), nil
  33  }
  34