Add pprint (#749)

packages/p/pprint/xmake.lua

@@ -0,0 +1,39 @@
+package("pprint")
+    set_kind("library", {headeronly = true})
+    set_homepage("https://github.com/p-ranav/pprint")
+    set_description("Pretty Printer for Modern C++")
+
+    add_urls("https://github.com/p-ranav/pprint.git")
+
+    add_versions("2020.2.20", "0ee09c8d8a9eebc944d07ac69e3b86d41f2304df")
+
+    add_deps("cmake")
+    on_install(function (package)
+        local configs = {}
+        table.insert(configs, "-DCMAKE_BUILD_TYPE=" .. (package:debug() and "Debug" or "Release"))
+        if package:config("shared") then
+            table.insert(configs, "-DBUILD_SHARED_LIBS=on")
+        else
+            table.insert(configs, "-DBUILD_SHARED_LIBS=off")
+        end
+        import("package.tools.cmake").install(package, configs)
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({
+            test = [[
+            #include <pprint/pprint.hpp>
+            void test() {
+                pprint::PrettyPrinter printer;
+                printer.print(5);
+                printer.print(3.14f);
+                printer.print(2.718);
+                printer.print(true);
+                printer.print('x');
+                printer.print("Hello, 世界");
+                printer.print(nullptr);
+            }
+            ]]},
+            {configs = {languages = "c++17"}
+        }))
+    end)