add cnpy (#1175)

packages/c/cnpy/xmake.lua

@@ -0,0 +1,36 @@
+package("cnpy")
+
+    set_homepage("https://github.com/rogersce/cnpy")
+    set_description("library to read/write .npy and .npz files in C/C++")
+    set_license("MIT")
+
+    add_urls("https://github.com/rogersce/cnpy.git")
+    add_versions("2018.06.01", "4e8810b1a8637695171ed346ce68f6984e585ef4")
+
+    add_configs("shared", {description = "Build shared library.", default = false, type = "boolean", readonly = true})
+
+    add_deps("zlib")
+    on_install(function (package)
+        io.writefile("xmake.lua", [[
+            add_rules("mode.debug", "mode.release")
+            set_languages("c++11")
+            add_requires("zlib")
+            target("cnpy")
+                set_kind("static")
+                add_files("cnpy.cpp")
+                add_headerfiles("cnpy.h")
+                add_packages("zlib")
+        ]])
+        import("package.tools.xmake").install(package)
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            void test() {
+                double myVar1 = 1.2;
+                char myVar2 = 'a';
+                cnpy::npz_save("out.npz","myVar1",&myVar1,{1},"w");
+                cnpy::npz_save("out.npz","myVar2",&myVar2,{1},"a");
+            }
+        ]]}, {configs = {languages = "c++11"}, includes = "cnpy.h"}))
+    end)