xpack: add package (#2610)

packages/x/xpack/xmake.lua

@@ -0,0 +1,33 @@
+package("xpack")
+    set_kind("library", {headeronly = true})
+    set_homepage("https://github.com/xyz347/xpack")
+    set_description("convert json/xml/bson to c++ struct")
+    set_license("Apache-2.0")
+
+    add_urls("https://github.com/xyz347/xpack/archive/refs/tags/$(version).tar.gz",
+             "https://github.com/xyz347/xpack.git")
+
+    add_versions("v1.0.5", "ea8693dd3a53d54e0c1e3c9e6e06f31ff7f593f7f8cf8fb4889f5c3354dbae8e")
+
+    add_deps("rapidjson")
+
+    on_install(function (package)
+        os.cp("rapidxml", package:installdir("include"))
+        os.cp("*.h", package:installdir("include", "xpack"))
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include <xpack/json.h>
+            struct User {
+                int id;
+                std::string name;
+                XPACK(O(id, name));
+            };
+            void test() {
+                User u;
+                std::string data = "{\"id\":12345, \"name\":\"xpack\"}";
+                xpack::json::decode(data, u);
+            }
+        ]]}, {configs = {languages = "c++11"}}))
+    end)