seasocks: add package (#2827)

* seasocks: add package

* disable plat

* improve xmake.lua

packages/s/seasocks/xmake.lua

@@ -0,0 +1,46 @@
+package("seasocks")
+    set_homepage("https://github.com/mattgodbolt/seasocks")
+    set_description("Simple, small, C++ embeddable webserver with WebSockets support")
+    set_license("BSD-2-Clause")
+
+    add_urls("https://github.com/mattgodbolt/seasocks/archive/refs/tags/$(version).tar.gz",
+             "https://github.com/mattgodbolt/seasocks.git")
+
+    add_versions("v1.4.6", "fc69636ce1205d338d4c02784333b04cd774fa368843fcf9f4fe6f8530a2cd67")
+
+    add_configs("deflate", {description = "Include support for deflate (requires zlib).", default = false, type = "boolean"})
+
+    if is_plat("windows") then
+        add_syslinks("ws2_32")
+    elseif is_plat("linux", "bsd") then
+        add_syslinks("pthread")
+    end
+
+    add_deps("cmake")
+    add_deps("python", {kind = "binary"})
+
+    on_load(function (package)
+        if package:config("deflate") then
+            package:add("deps", "zlib")
+        end
+    end)
+
+    on_install("windows", "linux", "bsd", function (package)
+        local configs = {"-DUNITTESTS=OFF", "-DSEASOCKS_EXAMPLE_APP=OFF"}
+        table.insert(configs, "-DCMAKE_BUILD_TYPE=" .. (package:is_debug() and "Debug" or "Release"))
+        table.insert(configs, "-DSEASOCKS_SHARED=" .. (package:config("shared") and "ON" or "OFF"))
+        table.insert(configs, "-DDEFLATE_SUPPORT=" .. (package:config("deflate") and "ON" or "OFF"))
+        if package:is_plat("windows") and package:config("shared") then
+            table.insert(configs, "-DCMAKE_WINDOWS_EXPORT_ALL_SYMBOLS=ON")
+        end
+        import("package.tools.cmake").install(package, configs)
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include <seasocks/StringUtil.h>
+            void test() {
+                std::string dir = seasocks::getWorkingDir();
+            }
+        ]]}, {configs = {languages = "c++17"}}))
+    end)