new package xxmlxx: 2025.09.14 (#8074)

packages/x/xxmlxx/xmake.lua

@@ -0,0 +1,43 @@
+package("xxmlxx")
+    set_kind("library", {headeronly = true})
+    set_homepage("https://github.com/luckydu-henry/xxmlxx")
+    set_description("A very lightweight and efficient modern C++ xml library")
+    set_license("MIT")
+
+    add_urls("https://github.com/luckydu-henry/xxmlxx.git")
+
+    add_versions("2025.09.14", "8e290102820b75aacc60d5419ff955aea52d6514")
+
+    if on_check then
+        on_check(function (package)
+            assert(package:check_cxxsnippets({test = [[
+                #include <vector>
+                #include <format>
+                #include <ranges>
+                void test() {
+                    std::vector nums{1, 2, 3};
+                    auto fmt_nums = nums | std::views::transform([](int x) {
+                        return std::format("{:02d}", x);
+                    });
+                }
+            ]]}, {configs = {languages = "c++20"}}), "package(xxmlxx) Require at least C++20.")
+        end)
+    end
+
+    on_install(function(package)
+        os.cp("xxmlxx.hpp", package:installdir("include"))
+    end)
+    
+    on_test(function(package)
+        assert(package:check_cxxsnippets({test = [[
+            void test() {
+                xxmlxx::document_parser parser(R"(
+                    <?xml version="1.0" encoding="utf-8"?>
+                    <XMLRoot>
+                        <Data one="1.0"/>
+                        <HelloMessage>Hello world!</HelloMessage>
+                    </XMLRoot>
+                )");
+            }
+        ]]}, {configs = {languages = "c++20"}, includes = "xxmlxx.hpp"}))
+    end)