Split C extension in two (pymongo, bson) PYTHON-60

Author: Mike Dirolf

bson/__init__.py

@@ -500,3 +500,15 @@ def decode(self, as_class=dict, tz_aware=False):
  """
  (document, _) = _bson_to_dict(self, as_class, tz_aware)
  return document
+
+
+def has_c():
+ """Is the C extension installed?
+
+ .. versionadded:: 1.8.1+
+ """
+ try:
+ from bson import _cbson
+ return True
+ except ImportError:
+ return False

bson/_cbson.h

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2009-2010 10gen, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <Python.h>
+
+/* A buffer representing some data being encoded to BSON. */
+typedef struct {
+ char* buffer;
+ int size;
+ int position;
+} bson_buffer;
+
+bson_buffer* buffer_new(void);
+
+int buffer_save_bytes(bson_buffer* buffer, int size);
+
+int buffer_write_bytes(bson_buffer* buffer, const char* bytes, int size);
+
+void buffer_free(bson_buffer* buffer);
+
+int write_dict(bson_buffer* buffer, PyObject* dict,
+ unsigned char check_keys, unsigned char top_level);
+
+PyObject* elements_to_dict(const char* string, int max,
+ PyObject* as_class, unsigned char tz_aware);
+
+int write_pair(bson_buffer* buffer, const char* name,
+ Py_ssize_t name_length, PyObject* value,
+ unsigned char check_keys, unsigned char allow_id);
+
+int decode_and_write_pair(bson_buffer* buffer,
+ PyObject* key, PyObject* value,
+ unsigned char check_keys, unsigned char top_level);