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From Alexey Neyman <sti...@att.net>
Subject Re: Bug with svn_txdelta_window_t Python binding?
Date Mon, 08 Mar 2010 17:29:41 GMT
Any experts on Python bindings on this list? :)

Could this at least be confirmed to be a bug, so that I could enter it 
into issues database?

Regards,
Alexey

On Thursday 04 March 2010 01:40:56 pm Alexey Neyman wrote:
> Hi all,
>
> It looks like there's a bug with Python binding for the
> svn_txdelta_window_t structure. The problem is that the 'ops' array is
> mapped to Python as a single object, not as a sequence of 'num_ops'
> items. That is, the following code for apply_textdelta does not work:
>
> def apply_textdelta(self, file_baton, base_checksum):
>   self.dbg(("apply_textdelta to %s" % (file_baton[0])))
>   def txdelta_handler(window):
>     if window is None:
>       self.dbg("txdelta - stop")
>     else:
>       self.dbg(("txdelta - %s [%d,%d] [X,%d] %d %d" %
>           (file_baton[0], window.sview_offset, window.sview_len,
>             window.tview_len, window.src_ops, window.num_ops)))
>       for o in window.ops:
>         self.dbg(("  op: %d,%d,%d" % (o.action_code, o.offset,
> o.length))) return txdelta_handler
>
> It fails with the error that "for o in window.ops: TypeError: iteration
> over non-sequence". The following code works, but it can only access
> the first item in the 'ops' array:
>
> self.dbg(("  op: %d,%d,%d" %
>   (window.ops.action_code, window.ops.offset, window.ops.length)))
>
> I am not a SWIG expert; could someone confirm if it's a bug in SWIG
> Python bindings?
>
> Regards,
> Alexey.

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