add ctre (#674)

packages/c/ctre/xmake.lua

@@ -0,0 +1,41 @@
+package("ctre")
+
+    set_homepage("https://github.com/hanickadot/compile-time-regular-expressions/")
+    set_description("ctre is a Compile time PCRE (almost) compatible regular expression matcher.")
+
+    set_urls("https://github.com/hanickadot/compile-time-regular-expressions/archive/refs/tags/v$(version).zip")
+    add_versions("3.4.1", "099d6503cddd8e086b71247321ac64d91976136aa727d0de3ad5f9fd1897c5c7")
+
+    add_configs("header_only", {description = "Use header only version.", default = false, type = "boolean"})
+
+    on_load(function (package)
+        if not package:config("header_only") then
+            package:add("deps", "cmake")
+        end
+    end)
+
+    on_install(function (package)
+        if package:config("header_only") then
+            os.cp("single-header", package:installdir("include"))
+            return
+        end
+        local configs = {"-DCTRE_BUILD_TESTS=OFF"}
+        import("package.tools.cmake").install(package, configs)
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include<ctll.hpp>
+            #include<ctre.hpp>
+            #include<iostream>
+            #include<string>
+
+            static void test() {
+                std::string str = "Hello World";
+                static constexpr auto pattern = ctll::fixed_string{ R"(\s+)" };
+                for(auto e: ctre::split<pattern>(str)) {
+                    std::cout << std::string(e.get<0>()) << std::endl;
+                }
+            }
+        ]]}, {configs = {languages = "c++20"}, includes = "ctre.hpp"}))
+    end)