Revision 96171db1 image_creator/util.py

b/image_creator/util.py
60 60 

  		





  61
  61
  
    
    def compute(self, filename, size):


  		





  62
  62
  
    

  		





  63
  
  
    
        BLOCKSIZE = 2 ** 22  # 4MB


  		





  
  63
  
    
        MB = 2 ** 20


  		





  
  64
  
    
        BLOCKSIZE = 4 * MB  # 4MB


  		





  64
  65
  
    

  		





  65
  
  
    
        progressbar = self.out.Progress("Calculating md5sum:", 'mb')


  		





  66
  
  
    
        progressbar.max = ((size + 2 ** 20 - 1) // (2 ** 20))


  		





  
  66
  
    
        prog_size = ((size + MB - 1) // MB)  # in MB


  		





  
  67
  
    
        progressbar = self.out.Progress(prog_size, "Calculating md5sum:", 'mb')


  		





  67
  68
  
    
        md5 = hashlib.md5()


  		





  68
  69
  
    
        with open(filename, "r") as src:


  		





  69
  70
  
    
            left = size


  		





  ......




  72
  73
  
    
                data = src.read(length)


  		





  73
  74
  
    
                md5.update(data)


  		





  74
  75
  
    
                left -= length


  		





  75
  
  
    
                progressbar.goto((size - left) // (2 ** 20))


  		





  
  76
  
    
                progressbar.goto((size - left) // MB)


  		





  76
  77
  
    

  		





  77
  78
  
    
        checksum = md5.hexdigest()


  		





  78
  79
  
    
        progressbar.success(checksum)


  		












Also available in:
  Unified diff