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(Merge 3.4) Issue #21858: Better handling of Python exceptions in the sqlite3 

module.
This commit is contained in:
Victor Stinner 2014-06-26 23:33:34 +02:00
parent c59a49ddda 297d104248
commit 7722769b76
2 changed files with 28 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Misc/NEWS
View File

@ -103,6 +103,8 @@ Core and Builtins
Library
-------
- Issue #21858: Better handling of Python exceptions in the sqlite3 module.
- Issue #21476: Make sure the email.parser.BytesParser TextIOWrapper is
discarded after parsing, so the input file isn't unexpectedly closed.

42
Modules/_sqlite/cursor.c
View File

@ -289,9 +289,8 @@ PyObject* _pysqlite_fetch_one_row(pysqlite_Cursor* self)
Py_END_ALLOW_THREADS
row = PyTuple_New(numcols);
if (!row) {
if (!row)
return NULL;
}
for (i = 0; i < numcols; i++) {
if (self->connection->detect_types) {
@ -311,15 +310,13 @@ PyObject* _pysqlite_fetch_one_row(pysqlite_Cursor* self)
converted = Py_None;
} else {
item = PyBytes_FromStringAndSize(val_str, nbytes);
if (!item) {
return NULL;
}
if (!item)
goto error;
converted = PyObject_CallFunction(converter, "O", item);
Py_DECREF(item);
if (!converted) {
if (!converted)
break;
}
}
} else {
Py_BEGIN_ALLOW_THREADS
coltype = sqlite3_column_type(self->statement->st, i);
@ -374,9 +371,8 @@ PyObject* _pysqlite_fetch_one_row(pysqlite_Cursor* self)
nbytes = sqlite3_column_bytes(self->statement->st, i);
buffer = PyBytes_FromStringAndSize(
sqlite3_column_blob(self->statement->st, i), nbytes);
if (!buffer) {
if (!buffer)
break;
}
converted = buffer;
}
}
@ -389,12 +385,14 @@ PyObject* _pysqlite_fetch_one_row(pysqlite_Cursor* self)
}
}
if (PyErr_Occurred()) {
Py_DECREF(row);
row = NULL;
}
if (PyErr_Occurred())
goto error;
return row;
error:
Py_DECREF(row);
return NULL;
}
/*
@ -612,6 +610,10 @@ PyObject* _pysqlite_query_execute(pysqlite_Cursor* self, int multiple, PyObject*
while (1) {
/* Actually execute the SQL statement. */
rc = pysqlite_step(self->statement->st, self->connection);
if (PyErr_Occurred()) {
(void)pysqlite_statement_reset(self->statement);
goto error;
}
if (rc == SQLITE_DONE || rc == SQLITE_ROW) {
/* If it worked, let's get out of the loop */
break;
@ -685,6 +687,8 @@ PyObject* _pysqlite_query_execute(pysqlite_Cursor* self, int multiple, PyObject*
}
self->next_row = _pysqlite_fetch_one_row(self);
if (self->next_row == NULL)
goto error;
} else if (rc == SQLITE_DONE && !multiple) {
pysqlite_statement_reset(self->statement);
Py_CLEAR(self->statement);
@ -807,7 +811,10 @@ PyObject* pysqlite_cursor_executescript(pysqlite_Cursor* self, PyObject* args)
rc = SQLITE_ROW;
while (rc == SQLITE_ROW) {
rc = pysqlite_step(statement, self->connection);
/* TODO: we probably need more error handling here */
if (PyErr_Occurred()) {
(void)sqlite3_finalize(statement);
goto error;
}
}
if (rc != SQLITE_DONE) {
@ -884,6 +891,11 @@ PyObject* pysqlite_cursor_iternext(pysqlite_Cursor *self)
if (self->statement) {
rc = pysqlite_step(self->statement->st, self->connection);
if (PyErr_Occurred()) {
(void)pysqlite_statement_reset(self->statement);
Py_DECREF(next_row);
return NULL;
}
if (rc != SQLITE_DONE && rc != SQLITE_ROW) {
(void)pysqlite_statement_reset(self->statement);
Py_DECREF(next_row);
@ -895,8 +907,6 @@ PyObject* pysqlite_cursor_iternext(pysqlite_Cursor *self)
self->next_row = _pysqlite_fetch_one_row(self);
if (self->next_row == NULL) {
(void)pysqlite_statement_reset(self->statement);
Py_DECREF(next_row);
_pysqlite_seterror(self->connection->db, NULL);
return NULL;
}
}