FreeSpace.py

#!/usr/local/bin/python
#
#                               Copyright 2003
#                                     by
#                        The Board of Trustees of the
#                     Leland Stanford Junior University.
#                            All rights reserved.
#

__facility__ = "Online"
__abstract__ = "GLAST LAT free disk space utility functions"
__author__   = "Jim Panetta <panetta@SLAC.Stanford.edu> SLAC - GLAST LAT I&T/Online"
__date__     = "10/20/2003"
__version__  = "$Revision: 2.1 $"
__credits__  = "SLAC"

import LATTE.copyright_SLAC


import os

def FreeSpace(filePath=None):
  """ freespace(path) -> long
  Return the number of bytes available to the user on the file system
  pointed to by path."""
  try:
    os.statvfs          # doesn't fail if we're on unix
  except AttributeError:
    # Win32 implementation
    try:
      if filePath is None: filePath = 'C:/'  # Root level directory
      import win32file
      return win32file.GetDiskFreeSpaceEx(filePath)[0]
    except Exception, e:
      print 'FreeSpace() exception: ', e, ' path ', filePath
      return long(-1)
  else:
    # Unix implementation
    try:
      if filePath is None: filePath = '.'    # Current working directory
      import statvfs
      s = os.statvfs(filePath)
      return s[statvfs.F_BAVAIL] * long(s[statvfs.F_BSIZE])
    except Exception, e:
      print 'FreeSpace() exception: ', e
      return long(-1)

  # should never get here
  return long(-1)

---