github.com/jerryclinesmith/packer@v0.3.7/configfile_windows.go (about)

     1  // +build windows
     2  
     3  package main
     4  
     5  import (
     6  	"path/filepath"
     7  	"syscall"
     8  	"unsafe"
     9  )
    10  
    11  var (
    12  	shell         = syscall.MustLoadDLL("Shell32.dll")
    13  	getFolderPath = shell.MustFindProc("SHGetFolderPathW")
    14  )
    15  
    16  const CSIDL_APPDATA = 26
    17  
    18  func configFile() (string, error) {
    19  	dir, err := configDir()
    20  	if err != nil {
    21  		return "", err
    22  	}
    23  
    24  	return filepath.Join(dir, "packer.config"), nil
    25  }
    26  
    27  func configDir() (string, error) {
    28  	b := make([]uint16, syscall.MAX_PATH)
    29  
    30  	// See: http://msdn.microsoft.com/en-us/library/windows/desktop/bb762181(v=vs.85).aspx
    31  	r, _, err := getFolderPath.Call(0, CSIDL_APPDATA, 0, 0, uintptr(unsafe.Pointer(&b[0])))
    32  	if uint32(r) != 0 {
    33  		return "", err
    34  	}
    35  
    36  	return syscall.UTF16ToString(b), nil
    37  }