github.com/hms58/moby@v1.13.1/pkg/directory/directory_windows.go (about)

     1  // +build windows
     2  
     3  package directory
     4  
     5  import (
     6  	"os"
     7  	"path/filepath"
     8  )
     9  
    10  // Size walks a directory tree and returns its total size in bytes.
    11  func Size(dir string) (size int64, err error) {
    12  	err = filepath.Walk(dir, func(d string, fileInfo os.FileInfo, err error) error {
    13  		if err != nil {
    14  			// if dir does not exist, Size() returns the error.
    15  			// if dir/x disappeared while walking, Size() ignores dir/x.
    16  			if os.IsNotExist(err) && d != dir {
    17  				return nil
    18  			}
    19  			return err
    20  		}
    21  
    22  		// Ignore directory sizes
    23  		if fileInfo == nil {
    24  			return nil
    25  		}
    26  
    27  		s := fileInfo.Size()
    28  		if fileInfo.IsDir() || s == 0 {
    29  			return nil
    30  		}
    31  
    32  		size += s
    33  
    34  		return nil
    35  	})
    36  	return
    37  }