Add compilation of c files

asyncio_mongo/_bson/encoding_helpers.h

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2009-2012 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.
+ */
+
+#ifndef ENCODING_HELPERS_H
+#define ENCODING_HELPERS_H
+
+typedef enum {
+    VALID,
+    NOT_UTF_8,
+    HAS_NULL
+} result_t;
+
+result_t check_string(const unsigned char* string, const int length,
+                      const char check_utf8, const char check_null);
+
+#endif