From 954c223d3276ae312274e9f0a3c47396b8cf9d60 Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Sat, 11 Jun 2022 10:56:22 +0200
Subject: .

---
 anim/serialize.cpp | 129 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 129 insertions(+)
 create mode 100644 anim/serialize.cpp

(limited to 'anim/serialize.cpp')

diff --git a/anim/serialize.cpp b/anim/serialize.cpp
new file mode 100644
index 00000000..2a0b5a45
--- /dev/null
+++ b/anim/serialize.cpp
@@ -0,0 +1,129 @@
+#include "serialize.hpp"
+#include "../json.hpp"
+
+#include <algorithm>
+#include <utility>
+#include <fstream>
+#include <Corrade/Utility/Debug.h>
+#include <Corrade/Utility/DebugStl.h>
+
+using Corrade::Utility::Debug;
+using Corrade::Utility::Error;
+
+static constexpr
+std::pair<anim_direction, const char*> anim_direction_map[] = {
+    { anim_direction::N,        "n"     },
+    { anim_direction::NE,       "ne"    },
+    { anim_direction::E,        "e"     },
+    { anim_direction::SE,       "se"    },
+    { anim_direction::S,        "s"     },
+    { anim_direction::SW,       "sw"    },
+    { anim_direction::W,        "w"     },
+    { anim_direction::NW,       "nw"    },
+};
+
+const char* anim_group::direction_to_string(anim_direction group)
+{
+    auto it = std::find_if(std::cbegin(anim_direction_map), std::cend(anim_direction_map),
+                           [=](const auto& pair) { return group == pair.first; });
+    if (it != std::cend(anim_direction_map))
+        return it->second;
+    else
+        return "(unknown)";
+}
+
+anim_direction anim_group::string_to_direction(const std::string& str)
+{
+    auto it = std::find_if(std::cbegin(anim_direction_map), std::cend(anim_direction_map),
+                           [&](const auto& pair) { return str == pair.second; });
+    if (it != std::cend(anim_direction_map))
+        return it->first;
+    else
+        return (anim_direction)0;
+}
+
+namespace nlohmann {
+
+template<>
+struct adl_serializer<anim_direction> final {
+    static void to_json(json& j, anim_direction x);
+    static void from_json(const json& j, anim_direction& x);
+};
+
+template<>
+struct adl_serializer<Magnum::Vector2i> final {
+    static void to_json(json& j, const Magnum::Vector2i& x);
+    static void from_json(const json& j, Magnum::Vector2i& x);
+};
+
+void adl_serializer<Magnum::Vector2i>::to_json(json& j, const Magnum::Vector2i& x)
+{
+    j["x"] = x[0];
+    j["y"] = x[1];
+}
+
+void adl_serializer<Magnum::Vector2i>::from_json(const json& j, Magnum::Vector2i& x)
+{
+    j.at("x").get_to(x[0]);
+    j.at("y").get_to(x[1]);
+}
+
+#if 0
+void adl_serializer<anim_direction>::to_json(json& j, anim_direction x)
+{
+    j = anim_group::direction_to_string(x);
+}
+
+void adl_serializer<anim_direction>::from_json(const json& j, anim_direction& x)
+{
+    x = anim_group::string_to_direction(j);
+}
+#endif
+
+} // namespace nlohmann
+
+NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(anim_frame, ground, offset, size);
+NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(anim_group, name, frames, ground);
+NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE(anim, name, nframes, actionframe, fps, groups);
+
+std::optional<anim> anim::from_json(const std::filesystem::path& pathname)
+{
+    using namespace nlohmann;
+    std::ifstream s;
+    s.exceptions(s.exceptions() | std::ios::failbit | std::ios::badbit);
+    try {
+        s.open(pathname, std::ios_base::in);
+    } catch (const std::ios::failure& e) {
+        Error{} << "failed to open" << pathname << ':' << e.what();
+        return std::nullopt;
+    }
+    anim ret;
+    try {
+        json j;
+        s >> j;
+        using nlohmann::from_json;
+        from_json(j, ret);
+    } catch (const std::exception& e) {
+        Error{} << "failed to parse" << pathname << ':' << e.what();
+        return std::nullopt;
+    }
+    return std::make_optional(std::move(ret));
+}
+
+bool anim::to_json(const std::filesystem::path& pathname)
+{
+    nlohmann::json j = *this;
+
+    std::ofstream s;
+    s.exceptions(s.exceptions() | std::ios::failbit | std::ios::badbit);
+    try {
+        s.open(pathname, std::ios_base::out | std::ios_base::trunc);
+    } catch (const std::ios::failure& e) {
+        Error{} << "failed to open" << pathname << "for writing:" << e.what();
+        return false;
+    }
+    s << j.dump(4);
+    s.flush();
+
+    return true;
+}
-- 
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