add jsoncpp repo

packages/j/jsoncpp/xmake.lua

@@ -0,0 +1,54 @@
+package("jsoncpp")
+
+set_homepage("https://github.com/open-source-parsers/jsoncpp/wiki")
+set_description("A C++ library for interacting with JSON.")
+
+set_urls("https://github.com/open-source-parsers/jsoncpp/archive/$(version).zip")
+
+add_versions("1.9.4", "6da6cdc026fe042599d9fce7b06ff2c128e8dd6b8b751fca91eb022bce310880")
+
+add_includedirs("include")
+add_deps("cmake")
+on_install("linux", "macosx", "iphoneos", "android", function(package)
+    local configs = {}
+    table.insert(configs, "-DBUILD_SHARED_LIBS=" .. (package:config("shared") and "ON" or "OFF"))
+    table.insert(configs, "-DDBUILD_STATIC_LIBS=" .. (package:config("static") and "ON" or "OFF"))
+    table.insert(configs, "-DDCMAKE_BUILD_TYPE=" .. (package:debug() and "Debug" or "Release"))
+    import("package.tools.cmake").install(package, configs)
+end)
+
+on_test(function(package)
+
+    assert(package:check_cxxsnippets({
+        test = [[
+            #include <iostream>
+            #include <assert.h>
+            static void test() {
+                const std::string rawJson = R"({"Age": 20, "Name": "colin"})";
+                const auto rawJsonLength = static_cast<int>(rawJson.length());
+                constexpr bool shouldUseOldWay = false;
+                JSONCPP_STRING err;
+                Json::Value root;
+                
+                if (shouldUseOldWay) {
+                  Json::Reader reader;
+                  reader.parse(rawJson, root);
+                } else {
+                  Json::CharReaderBuilder builder;
+                  const std::unique_ptr<Json::CharReader> reader(builder.newCharReader());
+                  if (!reader->parse(rawJson.c_str(), rawJson.c_str() + rawJsonLength, &root,
+                                     &err)) ;
+                }
+                const std::string name = root["Name"].asString();
+                const int age = root["Age"].asInt();
+                assert(name == "colin");
+                assert(age == 20);
+            }
+        ]]
+    }, {
+        configs = {
+            languages = "c++11"
+        },
+        includes = "json/json.h"
+    }))
+end)