Issues with file copy from p3d to disk

Scripting Issues
1

I’ve got some code that copies a file from my application directory to a user’s home directory using shutil.copy():

if base.appRunner:
      self.appFolder = base.appRunner.multifileRoot
    else:
      self.appFolder = os.path.dirname(__file__)
    self.dataFolder = os.path.join(Filename.getHomeDirectory().toOsSpecific(), 'Library', 'Application Support', 'BOT')
    self.sourceFile = os.path.join(self.appFolder, 'models.zip')
    self.destFile = os.path.join(self.dataFolder, 'models.zip')
    shutil.copy(self.sourceFile, self.destFile)

When I run using python, everything works, but when the application is packaged in a p3d it gives an IOError:

Traceback (most recent call last):
  File "/Users/rdb/pandaworker/panda3d-1.7.0/built_cmu/direct/p3d/AppRunner.py", line 411, in run
  File "/Users/rdb/pandaworker/panda3d-1.7.0/built_cmu/direct/task/Task.py", line 496, in run
  File "/Users/rdb/pandaworker/panda3d-1.7.0/built_cmu/direct/task/Task.py", line 454, in step
  File "/Users/rdb/pandaworker/panda3d-1.7.0/built_cmu/direct/showbase/Messenger.py", line 352, in __taskChainDispatch
  File "/Users/rdb/pandaworker/panda3d-1.7.0/built_cmu/direct/showbase/Messenger.py", line 410, in __dispatch
  File "/Users/rdb/pandaworker/panda3d-1.7.0/built_cmu/direct/p3d/AppRunner.py", line 493, in __startIfReady
  File "VFSImporter", line 153, in load_module
  File "/Users/aaron/Projects/MAW/BOT/BOTApps/test/ziptest.py", line 67, in <module>
    app = MyApp()
  File "/Users/aaron/Projects/MAW/BOT/BOTApps/test/ziptest.py", line 27, in __init__
    shutil.copy(self.sourceFile, self.destFile)
  File "/Users/rdb/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/shutil.py", line 88, in copy
  File "/Users/rdb/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/shutil.py", line 52, in copyfile
  File "/Users/rdb/pandaworker/panda3d-1.7.0/built_cmu/direct/stdpy/file.py", line 132, in __init__
IOError
:TaskManager: TaskManager.destroy()
:display: Closing osxGraphicsWindow
Successfully joined thread: 0
Failure on startup.

I’m assuming that this is an issue with copying a file from the virtual file system (reported as /mf on my machine). Is there a preferred panda method for copying files from the vfs?

2

I think it’s more likely that Filename.getHomeDirectory() returns a different value in the p3d environment. It should, because the p3d environment is primarily intended for use on web pages, where it is designed to be a special sandboxed environment that doesn’t normally interact with the wider directory structure.

If you really want to use the user’s actual home directory in your p3d file, you can try -c ‘keep_user_env=1’ on the packp3d command line.

David

3

The directory prints out the same whether the app is packed or not. Also, I can make this directory when the app is packed. Same IOError whether or not I use the keep_user_env setting and whether I use getHomeDirectory or another base directory like base.appRunner.rootDir.

Also, I tried opening the file and then writing it out, to avoid using shutil.copy:

    source_file = open(os.path.join(self.appFolder, 'models.zip'), 'r')
    dest_file = open(os.path.join(self.dataFolder, 'models.zip'), 'w')
    dest_file.write(source_file.read())
    source_file.close()
    dest_file.close()

This throws an IOError as well on the first open statement. (self.appFolder is the multifile root) Whether using shutil.copy or this method the IOError is generated in file.py (direct.stdpy.file).

4

Well, an IOError on open sure does sound like the path doesn’t exist, or it’s not readable for some reason.

Try:
print Filename(self.appFolder, ‘models.zip’).exists()
print vfs.exists(Filename(self.appFolder, ‘models.zip’))

The first line ought to print 0, because it checks only the actual hard disk, not the vfs, and presumably /mf doesn’t exist on your actual hard disk. But the second line ought to print 1, if the file is indeed within that folder on the vfs.

David

5

Ah, thanks, both are 0. Maybe my zip file isn’t getting included in the p3d? Is there a way to make that happen?

6

Note that you can use multify to inspect the contents of your p3d file. Zip files are not packaged by default, but you can add them with “-n zip” on the packp3d command line.

David

7

That worked. Thanks.