add litehtml (#1789)

* add litehtml

* add gumbo

* improve gumbo

* fix gumbo for windows

* fix gumbo for windows

* fix litehtml

packages/g/gumbo-parser/xmake.lua

@@ -0,0 +1,33 @@
+package("gumbo-parser")
+    set_homepage("https://github.com/google/gumbo-parser")
+    set_description("An HTML5 parsing library in pure C99")
+    set_license("Apache-2.0")
+
+    add_urls("https://github.com/google/gumbo-parser/archive/refs/tags/$(version).tar.gz",
+             "https://github.com/google/gumbo-parser.git")
+    add_versions("v0.10.1", "28463053d44a5dfbc4b77bcf49c8cee119338ffa636cc17fc3378421d714efad")
+
+    on_install(function (package)
+        io.writefile("xmake.lua", [[
+            add_rules("mode.debug", "mode.release")
+            target("gumbo")
+                set_kind("$(kind)")
+                add_files("src/*.c")
+                add_headerfiles("src/*.h")
+                if is_plat("windows") then
+                    add_includedirs("visualc/include")
+                    if is_kind("shared") then
+                        add_rules("utils.symbols.export_all", {export_classes = true})
+                    end
+                end
+        ]])
+        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("gumbo_parse_with_options", {includes = "gumbo.h"}))
+    end)

packages/l/litehtml/xmake.lua

@@ -0,0 +1,31 @@
+package("litehtml")
+    set_homepage("http://www.litehtml.com/")
+    set_description("Fast and lightweight HTML/CSS rendering engine")
+
+    add_urls("https://github.com/litehtml/litehtml.git")
+    add_versions("2023.01.05", "1e803393bdc8e586e8eefd4c33973e04994bb288")
+
+    add_deps("cmake", "gumbo-parser")
+
+    on_install(function (package)
+        local configs = {"-DBUILD_TESTING=OFF", "-DEXTERNAL_GUMBO=ON"}
+        if package:is_plat("windows") and package:config("shared") then
+            table.insert(configs, "-DCMAKE_WINDOWS_EXPORT_ALL_SYMBOLS=ON")
+        end
+        table.insert(configs, "-DCMAKE_BUILD_TYPE=" .. (package:debug() and "Debug" or "Release"))
+        table.insert(configs, "-DBUILD_SHARED_LIBS=" .. (package:config("shared") and "ON" or "OFF"))
+        import("package.tools.cmake").install(package, configs, {packagedeps = "gumbo-parser"})
+        os.cp("include/litehtml.h", package:installdir("include"))
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include <string>
+            #include <litehtml.h>
+            using namespace litehtml;
+            void test() {
+                css_element_selector selector;
+                selector.parse(".class");
+            }
+        ]]}, {configs = {languages = "c++11"}}))
+    end)