ctpg: add package (#4542)

* ctpg: add package

* Update xmake.lua

* Update xmake.lua

---------

Co-authored-by: ruki <waruqi@gmail.com>

packages/c/ctpg/xmake.lua

@@ -0,0 +1,30 @@
+package("ctpg")
+    set_kind("library", {headeronly = true})
+    set_homepage("https://github.com/peter-winter/ctpg")
+    set_description("Compile Time Parser Generator.")
+    set_license("MIT")
+
+    add_urls("https://github.com/peter-winter/ctpg/archive/refs/tags/$(version).tar.gz",
+             "https://github.com/peter-winter/ctpg.git")
+
+    add_versions("v1.3.7", "6cc7c34de4983e21070599fd5693b65ef08cd5c8f42612e43b47eda723623429")
+
+    add_deps("cmake")
+
+    on_install(function (package)
+        import("package.tools.cmake").install(package, {
+            "-DBUILD_TESTING=OFF"
+        })
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            using namespace ctpg;
+            using namespace ctpg::buffers;
+
+            constexpr nterm<int> list("list");
+            constexpr char number_pattern[] = "[1-9][0-9]*";
+            constexpr regex_term<number_pattern> number("number");
+            void test() {}
+        ]]}, {configs = {languages = "c++17"}, includes = "ctpg/ctpg.hpp"}))
+    end)