2012/3/9 Martin Zibricky <mzibr.pub...@gmail.com>:
> Hi all,
>
> I'm trying to use csvn (ctypes based python bindings).
>
> I have a simple code example.
>
> But when trying to run this code I get the following error.
> I thested csvn with svn 1.6.17 and 1.7.3. The issue is still the same.
>
> Could anyone please confirm this issue?
> ---
>
> $ python list_working_copy.py
> AAAAAAAAAA
> Traceback (most recent call last):
> File "_ctypes/callbacks.c", line 295, in 'calling callback function'
> TypeError: _list_wrapper() takes exactly 6 arguments (7 given)
> Segmentation fault
>
> ---
>
> # file: list_working_copy.py
> import csvn.core
> from csvn.wc import WC
>
> csvn.core.svn_cmdline_init("", csvn.core.stderr)
> working_copy = WC('path_to_wc')
> print 'A' * 10
> working_copy.list()
> print 'B' * 10
> working_copy.close()
>
I have not tested it, but just looking at the sources:
1. The callback used by WC.list() is actually the _list_wrapper
function in wc.py [1].
[1]
http://svn.apache.org/repos/asf/subversion/trunk/subversion/bindings/ctypes-python/csvn/wc.py
_list_wrapper() in [1] is declared as
[[[
def _list_wrapper(self, baton, path, dirent, abs_path, pool):
]]]
It is prepared for use in __init__ in [1] as
[[[
self._list_func = \
svn_client_list_func_t(self._list_wrapper)
]]]
But that does not match svn_client_list_func_t definition elsewhere
[2] http://subversion.apache.org/docs/api/1.6/group__List.html
[3] http://subversion.apache.org/docs/api/1.7/group__List.html
In [3]:
[[[
typedef svn_error_t *(* svn_client_list_func_t )(void *baton, const
char *path, const svn_dirent_t *dirent, const svn_lock_t *lock, const
char *abs_path, apr_pool_t *pool)
]]]
So the problem: the "const svn_lock_t *lock" argument is missing in
_list_wrapper method in Python.
2. The listing itself is performed by the following call in list() in wc.py [1]:
[[[
svn_client_list(self._build_path(path), byref(peg), byref(rev),
recurse, SVN_DIRENT_ALL, fetch_locks, self._list_func,
c_void_p(), self.client, self.iterpool)
]]]
There exists newer method, "svn_client_list2" since 1.5.
3. Regarding OP's example:
Is there a point of calling list() without passing a callback function into it?
The _list_wrapper() does nothing if your callback ("self._list") is
not initialized.
Best regards,
Konstantin Kolinko
