1 files changed, 110 insertions, 0 deletions
diff --git a/source/Common/RapidJsonHelper.hpp b/source/Common/RapidJsonHelper.hpp
new file mode 100644
index 0000000..75cd93a
--- /dev/null
+++ b/source/Common/RapidJsonHelper.hpp
@@ -0,0 +1,110 @@
+#pragma once
+
+#include <rapidjson/document.h>
+#include <cstring>
+#include <string>
+#include <string_view>
+
+#define BRUSSEL_JSON_GET(object, name, type, out, failAction) \
+	{                                                         \
+		auto it = (object).FindMember(name);                  \
+		if (it == (object).MemberEnd()) failAction;           \
+		auto& value = it->value;                              \
+		if (!value.Is<type>()) failAction;                    \
+		(out) = value.Get<type>();                            \
+	}
+
+#define BRUSSEL_JSON_GET_DEFAULT(object, name, type, out, theDefault) \
+	do {                                                              \
+		auto it = (object).FindMember(name);                          \
+		if (it == (object).MemberEnd()) {                             \
+			(out) = theDefault;                                       \
+			break;                                                    \
+		}                                                             \
+		auto& value = it->value;                                      \
+		if (!value.Is<type>()) {                                      \
+			(out) = theDefault;                                       \
+			break;                                                    \
+		}                                                             \
+		(out) = value.Get<type>();                                    \
+	} while (0);
+
+namespace rapidjson {
+
+inline const Value* GetProperty(const Value& value, std::string_view name) {
+	for (auto it = value.MemberBegin(); it != value.MemberEnd(); ++it) {
+		if (it->name.GetStringLength() != name.size()) continue;
+		if (std::memcmp(it->name.GetString(), name.data(), name.size())) continue;
+
+		return &it->value;
+	}
+	return nullptr;
+}
+
+inline const Value* GetProperty(const Value& value, Type type, std::string_view name) {
+	for (auto it = value.MemberBegin(); it != value.MemberEnd(); ++it) {
+		if (it->name.GetStringLength() != name.size()) continue;
+		if (it->value.GetType() != type) continue;
+		if (std::memcmp(it->name.GetString(), name.data(), name.size())) continue;
+
+		return &it->value;
+	}
+	return nullptr;
+}
+
+inline std::string_view AsStringView(const Value& value) {
+	return std::string_view(value.GetString(), value.GetStringLength());
+}
+
+inline std::string_view AsStringView(const GenericStringRef<char>& strRef) {
+	return std::string_view(strRef.s, strRef.length);
+}
+
+inline std::string AsString(const Value& value) {
+	return std::string(value.GetString(), value.GetStringLength());
+}
+
+inline std::string AsString(const GenericStringRef<char>& strRef) {
+	return std::string(strRef.s, strRef.length);
+}
+
+// RapidJson itself already provides std::string and const char* overloads
+inline GenericStringRef<char> StringRef(std::string_view str) {
+	return GenericStringRef<char>(
+		str.data() ? str.data() : "",
+		str.size());
+}
+
+template <class TIter, class TSentienl>
+rapidjson::Value WriteVectorPrimitives(rapidjson::Document& root, TIter begin, TSentienl end) {
+	using TElement = typename TIter::value_type;
+
+	rapidjson::Value list;
+	while (begin != end) {
+		if constexpr (std::is_same_v<TElement, std::string>) {
+			auto& elm = *begin;
+			list.PushBack(rapidjson::Value(elm.c_str(), elm.size()), root.GetAllocator());
+		} else {
+			list.PushBack(*begin, root.GetAllocator());
+		}
+		++begin;
+	}
+	return list;
+}
+
+template <class TContainer>
+bool ReadVectorPrimitives(const rapidjson::Value& value, TContainer& list) {
+	using TElement = typename TContainer::value_type;
+
+	if (!value.IsArray()) return false;
+
+	list.reserve(value.Size());
+	for (auto& elm : value.GetArray()) {
+		if (!elm.Is<TElement>()) return {};
+		list.push_back(elm.Get<TElement>());
+	}
+
+	return true;
+}
+
+} // namespace rapidjson