update json_object_new_string_len, json_escape_str (internal). Writer handles \x00 correctly

Added parse_null test. This does not change anything with how the parser handles \u0000 or null characters

This commit is addapted from one by Adomas Paltanavičius <adomas@leanholding.com>



git-svn-id: http://svn.metaparadigm.com/svn/json-c/trunk@63 327403b1-1117-474d-bef2-5cb71233fd97

json_object.h

@@ -337,6 +337,16 @@ extern struct json_object* json_object_new_string_len(const char *s, int len);
  */
 extern const char* json_object_get_string(struct json_object *obj);
 
+/** Get the string length of a json_object
+ *
+ * If the passed object is not of type json_type_string then zero
+ * will be returned.
+ *
+ * @param obj the json_object instance
+ * @returns int
+ */
+extern int json_object_get_string_len(struct json_object *obj);
+
 #ifdef __cplusplus
 }
 #endif