Code to recognize MS-Word document files?

[Mark Hammond]

Grant Edwards wrote:
> I'm looking for a snippet of python that I can use to determine
> if a file is a MS-Word document.  People around here seem to
> have gotten into the habit of attaching MS-Word files without a
> ".doc" on the name.  
> 
> Even with the .doc, the mimetypes module doesn't seem to get it
> right.  :(

This code, from ppw32, will extract information from MS Office 
documents.  I'm not sure what other properties are available.

Mark.

# DumpStorage.py - Dumps some user defined properties
# of a COM Structured Storage file.

import pythoncom
from win32com import storagecon # constants related to storage functions.

# These come from ObjIdl.h
FMTID_UserDefinedProperties = "{F29F85E0-4FF9-1068-AB91-08002B27B3D9}"

PIDSI_TITLE               = 0x00000002
PIDSI_SUBJECT             = 0x00000003
PIDSI_AUTHOR              = 0x00000004
PIDSI_CREATE_DTM          = 0x0000000c

def PrintStats(filename):
     if not pythoncom.StgIsStorageFile(filename):
         print "The file is not a storage file!"
         return
     # Open the file.
     flags = storagecon.STGM_READ | storagecon.STGM_SHARE_EXCLUSIVE
     stg = pythoncom.StgOpenStorage(filename, None, flags )

     # Now see if the storage object supports Property Information.
     try:
         pss = stg.QueryInterface(pythoncom.IID_IPropertySetStorage)
     except pythoncom.com_error:
         print "No summary information is available"
         return
     # Open the user defined properties.
     ps = pss.Open(FMTID_UserDefinedProperties)
     props = PIDSI_TITLE, PIDSI_SUBJECT, PIDSI_AUTHOR, PIDSI_CREATE_DTM
     data = ps.ReadMultiple( props )
     # Unpack the result into the items.
     title, subject, author, created = data
     print "Title:", title
     print "Subject:", subject
     print "Author:", author
     print "Created:", created.Format()

if __name__=='__main__':
     import sys
     if len(sys.argv)<2:
         print "Please specify a file name"
     else:
         PrintStats(sys.argv[1])