1 files changed, 91 insertions, 0 deletions
diff --git a/ahl-binding/jsonc_utils.hpp b/ahl-binding/jsonc_utils.hpp
new file mode 100644
index 0000000..5e82fca
--- /dev/null
+++ b/ahl-binding/jsonc_utils.hpp
@@ -0,0 +1,91 @@
+#pragma once
+
+/*
+ * Copyright (C) 2018 "IoT.bzh"
+ * Author Loïc Collignon <loic.collignon@iot.bzh>
+ *
+ * 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 <string>
+#include <vector>
+#include <json-c/json.h>
+
+template<class T>
+inline T& jcast(T& v, json_object* o)
+{
+    v << o;
+    return v;
+}
+
+template<class T>
+inline T& jcast_array(T& v, json_object* o)
+{
+    if (o == nullptr) return v;
+    auto sz = json_object_array_length(o);
+    for(auto i = 0; i < sz ; ++i)
+    {
+        typename T::value_type item;
+        jcast(item, json_object_array_get_idx(o, i));
+        v.push_back(item);
+    }
+    return v;
+}
+
+template<>
+inline bool& jcast<bool>(bool& v, json_object* o)
+{
+    v = (json_object_get_boolean(o) == TRUE);
+    return v;
+}
+
+template<>
+inline double& jcast<double>(double& v, json_object* o)
+{
+    v = json_object_get_double(o);
+    return v;
+}
+
+template<>
+inline int32_t& jcast<int32_t>(int32_t& v, json_object* o)
+{
+    v = json_object_get_int(o);
+    return v;
+}
+
+template<>
+inline int64_t& jcast<int64_t>(int64_t& v, json_object* o)
+{
+    v = json_object_get_int(o);
+    return v;
+}
+
+template<>
+inline std::string& jcast<std::string>(std::string& v, json_object* o)
+{
+    const char* tmp = json_object_get_string(o);
+    v = tmp ? tmp : "";
+    return v;
+}
+
+template<class T>
+inline T& jcast(T& v, json_object* o, std::string field)
+{
+    return jcast<T>(v, json_object_object_get(o, field.c_str()));
+}
+
+template<class T>
+inline T& jcast_array(T& v, json_object* o, std::string field)
+{
+    return jcast_array<T>(v, json_object_object_get(o, field.c_str()));
+}