github.com/ader1990/go@v0.0.0-20140630135419-8c24447fa791/src/pkg/os/error_windows.go (about)

     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  package os
     6  
     7  import "syscall"
     8  
     9  func isExist(err error) bool {
    10  	switch pe := err.(type) {
    11  	case nil:
    12  		return false
    13  	case *PathError:
    14  		err = pe.Err
    15  	case *LinkError:
    16  		err = pe.Err
    17  	}
    18  	return err == syscall.ERROR_ALREADY_EXISTS ||
    19  		err == syscall.ERROR_FILE_EXISTS || err == ErrExist
    20  }
    21  
    22  func isNotExist(err error) bool {
    23  	switch pe := err.(type) {
    24  	case nil:
    25  		return false
    26  	case *PathError:
    27  		err = pe.Err
    28  	case *LinkError:
    29  		err = pe.Err
    30  	}
    31  	return err == syscall.ERROR_FILE_NOT_FOUND ||
    32  		err == syscall.ERROR_PATH_NOT_FOUND || err == ErrNotExist
    33  }
    34  
    35  func isPermission(err error) bool {
    36  	switch pe := err.(type) {
    37  	case nil:
    38  		return false
    39  	case *PathError:
    40  		err = pe.Err
    41  	case *LinkError:
    42  		err = pe.Err
    43  	}
    44  	return err == syscall.ERROR_ACCESS_DENIED || err == ErrPermission
    45  }