add cmdline (#1368)

packages/c/cmdline/xmake.lua

@@ -0,0 +1,27 @@
+package("cmdline")
+
+    set_kind("library", {headeronly = true})
+    set_homepage("https://github.com/tanakh/cmdline")
+    set_description("A Command Line Parser")
+    set_license("BSD-3-Clause")
+
+    add_urls("https://github.com/tanakh/cmdline.git")
+    add_versions("2014.2.4", "e4cd007fb8f0314002d9a5b4d82939106e4144e4")
+
+    on_install("linux", "macosx", "bsd", "mingw", function (package)
+        os.cp("cmdline.h", package:installdir("include"))
+    end)
+
+    on_test(function (package)
+        assert(package:check_cxxsnippets({test = [[
+            #include <cmdline.h>
+            using namespace std;
+            static void test() {
+                cmdline::parser a;
+                a.add<string>("host", 'h', "host name", true, "");
+                a.add<int>("port", 'p', "port number", false, 80, cmdline::range(1, 65535));
+                a.add<string>("type", 't', "protocol type", false, "http", cmdline::oneof<string>("http", "https", "ssh", "ftp"));
+                a.add("gzip", '\0', "gzip when transfer");
+            }
+        ]]}))
+    end)