basic.py 文件源码

def _unsafe_writes(self, src, dest, exception):
      # sadly there are some situations where we cannot ensure atomicity, but only if
      # the user insists and we get the appropriate error we update the file unsafely
      if exception.errno == errno.EBUSY:
          #TODO: issue warning that this is an unsafe operation, but doing it cause user insists
          try:
              try:
                  out_dest = open(dest, 'wb')
                  in_src = open(src, 'rb')
                  shutil.copyfileobj(in_src, out_dest)
              finally: # assuring closed files in 2.4 compatible way
                  if out_dest:
                      out_dest.close()
                  if in_src:
                      in_src.close()
          except (shutil.Error, OSError, IOError):
              e = get_exception()
              self.fail_json(msg='Could not write data to file (%s) from (%s): %s' % (dest, src, e))

      else:
          self.fail_json(msg='Could not replace file: %s to %s: %s' % (src, dest, exception))