add llhttp (#198)

packages/l/llhttp/xmake.lua

@@ -0,0 +1,50 @@
+package("llhttp")
+
+    set_homepage("https://github.com/nodejs/llhttp")
+    set_description("Port of http_parser to llparse")
+    set_license("MIT")
+
+    add_urls("https://github.com/nodejs/llhttp/archive/release/$(version).tar.gz")
+    add_versions("v3.0.0", "02931556e69f8d075edb5896127099e70a093c104a994a57b4d72c85b48d25b0")
+
+    on_install(function (package)
+        io.writefile("xmake.lua", [[
+            add_rules("mode.debug", "mode.release")
+            target("llhttp")
+                set_kind("$(kind)")
+                if is_kind("shared") and is_plat("windows") then
+                    local funcs = {"llhttp_init",
+                                   "llhttp_settings_init",
+                                   "llhttp_execute",
+                                   "llhttp_finish",
+                                   "llhttp_message_needs_eof",
+                                   "llhttp_should_keep_alive",
+                                   "llhttp_pause",
+                                   "llhttp_resume",
+                                   "llhttp_resume_after_upgrade",
+                                   "llhttp_get_errno",
+                                   "llhttp_get_error_reason",
+                                   "llhttp_set_error_reason",
+                                   "llhttp_get_error_pos",
+                                   "llhttp_errno_name",
+                                   "llhttp_method_name",
+                                   "llhttp_set_lenient_headers",
+                                   "llhttp_set_lenient_chunked_length"}
+                    for _, func in ipairs(funcs) do
+                        add_shflags("/export:" .. func)
+                    end
+                end
+                add_files("src/*.c")
+                add_includedirs("include")
+                add_headerfiles("include/llhttp.h")
+        ]])
+        local configs = {}
+        if package:config("shared") then
+            configs.kind = "shared"
+        end
+        import("package.tools.xmake").install(package, configs)
+    end)
+
+    on_test(function (package)
+        assert(package:has_cfuncs("llhttp_init", {includes = "llhttp.h"}))
+    end)