Hi,
My goal is to detect all (or most) file dependencies of a script (i.e.
modules, dlls, data files). Currently, after a script is finished
executing I use sys.modules to determine all module dependencies, and I
use win32process.EnumProcessModules to determine DLL dependencies. This
works reasonably well, however I would still like to detect dependencies
from regular file open calls.
I did a little test by modifying __builtins__.open to point to a custom
function that forwards the call to the original open function and saves
the filename to a list. It seemed to work for simple test cases. Here is
the code:
def open_hook(*args,**kwargs):
r = open_real(*args,**kwargs)
saveFileName(args[0])
return r
open_real = __builtins__.open
__builtins__.open = open_hook
Is this a safe approach? Is there a more efficient way of doing this? I
realize that some dependencies will still fall through my checks,
especially file opens from C extensions, which is fine. I just want to
be able to detect the most common use cases. Any other suggestions are
appreciated.
-Farshid
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