On 2020/07/29 23:43, C. Michael Pilato wrote:
> Makes sense to me as a way to get access to all the things that can be
> returned in an errorful situation.
Okey, I implemented it. The attached patch add "conflict_p" and "new_rev"
attributes to SubversionException instance on svn_fs.commit_txn and
svn_repos.fs_commit_txn. Also, svn_repos.fs_commit_txn now returns
tuple of (None, int), for a consistency.
I've tested this method on other API with dummy attribute, but I didn't
test on those svn_fs.commit_txn and svn_repos.fs_commit_txn.
Could you please review and try it ?
Thanks, --
Yasuhito FUTATSUKI <futat...@yf.bsclub.org>
Index: subversion/bindings/swig/include/svn_types.swg
===================================================================
--- subversion/bindings/swig/include/svn_types.swg (revision 1880203)
+++ subversion/bindings/swig/include/svn_types.swg (working copy)
@@ -427,6 +427,10 @@
Specify how svn_error_t returns are turned into exceptions.
*/
#ifdef SWIGPYTHON
+%{
+#define svn_error_t_with_attrs svn_error_t
+%}
+
%typemap(out) svn_error_t * {
if ($1 != NULL) {
if ($1->apr_err != SVN_ERR_SWIG_PY_EXCEPTION_SET)
@@ -438,6 +442,10 @@
Py_INCREF(Py_None);
$result = Py_None;
}
+
+%typemap(out) svn_error_t_with_attrs * (svn_error_t * _global_err) {
+ _global_err = $1;
+}
#endif
#ifdef SWIGPERL
Index: subversion/bindings/swig/python/libsvn_swig_py/swigutil_py.c
===================================================================
--- subversion/bindings/swig/python/libsvn_swig_py/swigutil_py.c
(revision 1880203)
+++ subversion/bindings/swig/python/libsvn_swig_py/swigutil_py.c
(working copy)
@@ -411,10 +411,11 @@
/*** Custom SubversionException stuffs. ***/
-void svn_swig_py_svn_exception(svn_error_t *error_chain)
+void svn_swig_py_build_svn_exception(
+ PyObject **exc_class, PyObject **exc_ob,svn_error_t *error_chain)
{
PyObject *args_list, *args, *apr_err_ob, *message_ob, *file_ob, *line_ob;
- PyObject *svn_module, *exc_class, *exc_ob;
+ PyObject *svn_module;
svn_error_t *err;
if (error_chain == NULL)
@@ -422,7 +423,7 @@
/* Start with no references. */
args_list = args = apr_err_ob = message_ob = file_ob = line_ob = NULL;
- svn_module = exc_class = exc_ob = NULL;
+ svn_module = *exc_class = *exc_ob = NULL;
if ((args_list = PyList_New(0)) == NULL)
goto finished;
@@ -481,16 +482,13 @@
/* Create the exception object chain. */
if ((svn_module = PyImport_ImportModule((char *)"svn.core")) == NULL)
goto finished;
- if ((exc_class = PyObject_GetAttrString(svn_module,
- (char *)"SubversionException")) == NULL)
- goto finished;
- if ((exc_ob = PyObject_CallMethod(exc_class, (char *)"_new_from_err_list",
- (char *)"O", args_list)) == NULL)
- goto finished;
+ if ((*exc_class = PyObject_GetAttrString(svn_module,
+ (char *)"SubversionException")) != NULL)
+ {
+ *exc_ob = PyObject_CallMethod(*exc_class, (char *)"_new_from_err_list",
+ (char *)"O", args_list);
+ }
- /* Raise the exception. */
- PyErr_SetObject(exc_class, exc_ob);
-
finished:
/* Release any references. */
Py_XDECREF(args_list);
@@ -500,6 +498,18 @@
Py_XDECREF(file_ob);
Py_XDECREF(line_ob);
Py_XDECREF(svn_module);
+}
+
+void svn_swig_py_svn_exception(svn_error_t *error_chain)
+{
+ PyObject *exc_class, *exc_ob;
+
+ svn_swig_py_build_svn_exception(&exc_class, &exc_ob, error_chain);
+ /* Raise the exception. */
+ if (exc_class != NULL && exc_ob != NULL)
+ {
+ PyErr_SetObject(exc_class, exc_ob);
+ }
Py_XDECREF(exc_class);
Py_XDECREF(exc_ob);
}
Index: subversion/bindings/swig/python/libsvn_swig_py/swigutil_py.h
===================================================================
--- subversion/bindings/swig/python/libsvn_swig_py/swigutil_py.h
(revision 1880203)
+++ subversion/bindings/swig/python/libsvn_swig_py/swigutil_py.h
(working copy)
@@ -101,6 +101,11 @@
/*** Functions to expose a custom SubversionException ***/
+/* get a subversion exception class object and its instance built from
+ error_chain but not raise immediately. cunsume the error. */
+void svn_swig_py_build_svn_exception(
+ PyObject **exc_class, PyObject **exc_ob, svn_error_t *error_chain);
+
/* raise a subversion exception, created from a normal subversion
error. consume the error. */
void svn_swig_py_svn_exception(svn_error_t *err);
Index: subversion/bindings/swig/svn_fs.i
===================================================================
--- subversion/bindings/swig/svn_fs.i (revision 1880203)
+++ subversion/bindings/swig/svn_fs.i (working copy)
@@ -104,12 +104,60 @@
FIXME: Do the Perl and Ruby bindings need to do something similar?
*/
#ifdef SWIGPYTHON
-%typemap(argout) (const char **conflict_p, svn_revnum_t *new_rev) {
- /* this is always Py_None */
- Py_DECREF($result);
- /* build the result tuple */
- $result = Py_BuildValue("zi", *$1, (long)*$2);
+%typemap(argout) (const char **conflict_p, svn_revnum_t *new_rev)
+ (PyObject *exc_class, PyObject *exc_ob,
+ PyObject* conflict_ob, PyObject* rev_ob) {
+ if (_global_err != NULL)
+ {
+ if (_global_err->apr_err == SVN_ERR_SWIG_PY_EXCEPTION_SET)
+ {
+ svn_error_clear(_global_err);
+ }
+ else
+ {
+ svn_swig_py_build_svn_exception(&exc_class, &exc_ob, _global_err);
+ if (*$1 == NULL)
+ {
+ Py_INCREF(Py_None);
+ conflict_ob = Py_None;
+ }
+ else
+ {
+ conflict_ob = PyBytes_FromString((const char *)*$1);
+ }
+ PyObject_SetAttrString(exc_ob, "conflict_p", conflict_ob);
+ rev_ob = PyInt_FromLong((long)*$2);
+ PyObject_SetAttrString(exc_ob, "new_rev", rev_ob);
+ /* Raise the exception. */
+ PyErr_SetObject(exc_class, exc_ob);
+ Py_XDECREF(exc_class);
+ Py_XDECREF(exc_ob);
+ Py_DECREF(conflict_ob);
+ Py_DECREF(rev_ob);
+ SWIG_fail;
+ }
+ $result = NULL;
+ }
+ else
+ {
+ /* build the result tuple */
+ $result = Py_BuildValue(
+%#if PY_VERSION_HEX >= 0x03000000
+ "yi",
+%#else
+ "zi",
+%#endif
+ *$1, (long)*$2);
+ }
}
+
+svn_error_t_with_attrs *
+svn_fs_commit_txn(const char **conflict_p,
+ svn_revnum_t *new_rev,
+ svn_fs_txn_t *txn,
+ apr_pool_t *pool);
+%ignore svn_fs_commit_txn;
+
#endif
/* Ruby fixups for functions not following the pool convention. */
Index: subversion/bindings/swig/svn_repos.i
===================================================================
--- subversion/bindings/swig/svn_repos.i (revision 1880203)
+++ subversion/bindings/swig/svn_repos.i (working copy)
@@ -109,6 +109,75 @@
#endif
/* -----------------------------------------------------------------------
+ Fix the return value for svn_repos_fs_commit_txn(). If the conflict
+ result is NULL, then %append_output() is passed Py_None, but that goofs
+ up because that is *also* the marker for "I haven't started assembling
+ a multi-valued return yet" which means the second return value
+ (new_rev) will not cause a 2-tuple to be manufactured.
+
+ The answer is to explicitly create a 2-tuple return value.
+
+ FIXME: Do the Perl and Ruby bindings need to do something similar?
+*/
+#ifdef SWIGPYTHON
+%typemap(argout) (const char **conflict_p, svn_repos_t *repos,
+ svn_revnum_t *new_rev)
+ (PyObject *exc_class, PyObject *exc_ob,
+ PyObject* conflict_ob, PyObject* rev_ob) {
+ if (_global_err != NULL)
+ {
+ if (_global_err->apr_err == SVN_ERR_SWIG_PY_EXCEPTION_SET)
+ {
+ svn_error_clear(_global_err);
+ }
+ else
+ {
+ svn_swig_py_build_svn_exception(&exc_class, &exc_ob, _global_err);
+ if (*$1 == NULL)
+ {
+ Py_INCREF(Py_None);
+ conflict_ob = Py_None;
+ }
+ else
+ {
+ conflict_ob = PyBytes_FromString((const char *)*$1);
+ }
+ PyObject_SetAttrString(exc_ob, "conflict_p", conflict_ob);
+ rev_ob = PyInt_FromLong((long)*$3);
+ PyObject_SetAttrString(exc_ob, "new_rev", rev_ob);
+ /* Raise the exception. */
+ PyErr_SetObject(exc_class, exc_ob);
+ Py_XDECREF(exc_class);
+ Py_XDECREF(exc_ob);
+ Py_DECREF(conflict_ob);
+ Py_DECREF(rev_ob);
+ SWIG_fail;
+ }
+ $result = NULL;
+ }
+ else
+ {
+ /* build the result tuple */
+ $result = Py_BuildValue(
+%#if PY_VERSION_HEX >= 0x03000000
+ "yi",
+%#else
+ "zi",
+%#endif
+ *$1, (long)*$3);
+ }
+}
+
+svn_error_t_with_attrs *
+svn_repos_fs_commit_txn(const char **conflict_p,
+ svn_repos_t *repos,
+ svn_revnum_t *new_rev,
+ svn_fs_txn_t *txn,
+ apr_pool_t *pool);
+%ignore svn_repos_fs_commit_txn;
+
+#endif
+/* -----------------------------------------------------------------------
handle svn_repos_get_committed_info().
*/
#ifdef SWIGRUBY
