replace messy nlohmann json lib

Makefile

@@ -2,7 +2,7 @@ PROG=		sndlock
 SRCS=		imgui_impl_glfw.cpp imgui_impl_opengl3.cpp imgui_draw.cpp imgui_widgets.cpp imgui_tables.cpp imgui.cpp kirdy.cpp sndlock.cpp
 CXXOPTS=	-Wall `pkg-config --cflags glfw3 gl`
 LDFLAGS=	`pkg-config --libs glfw3 gl`
-LDADD=		-lsndio -lm
+LDADD=		-lsndio -lm -ljsoncpp
 
 BINDIR=		/usr/local/bin
 NOMAN=		noman

kirdy.cpp

@@ -1,5 +1,7 @@
+#include <iostream>
+
 #include <asio.hpp>
-#include <nlohmann/json.hpp>
+#include <json/json.h>
 
 #include "kirdy.hpp"
 
@@ -16,18 +18,30 @@ Kirdy::~Kirdy()
     delete socket;
 }
 
-nlohmann::json Kirdy::command(nlohmann::json &request)
+Json::Value Kirdy::command(Json::Value &request)
 {
-    std::string reply;
+    Json::StreamWriterBuilder builder_w;
-    asio::write(*socket, asio::buffer(request.dump() + "\n"));
+    std::string request_str = Json::writeString(builder_w, request);
-    asio::read_until(*socket, asio::dynamic_buffer(reply, 1024), '\n');
+    asio::write(*socket, asio::buffer(request_str + "\n"));
-    return nlohmann::json::parse(reply);
+    
+    std::cout << request_str << std::endl;
+
+    std::string reply_str;
+    std::size_t len = asio::read_until(*socket, asio::dynamic_buffer(reply_str, 1024), '\n');
+    Json::CharReaderBuilder builder_r;
+    const std::unique_ptr<Json::CharReader> reader(builder_r.newCharReader());
+    Json::Value reply;
+    JSONCPP_STRING err;
+    if(!reader->parse(reply_str.c_str(), reply_str.c_str() + len, &reply, &err))
+        std::cerr << "JSON parse error: " << err << std::endl;
+    return reply;
 }
 
 float Kirdy::get_laser_temp()
 {
-    nlohmann::json json;
+    Json::Value json;
     json["device_cmd"] = "GetStatusReport";
     auto reply = command(json);
-    return reply["thermostat"]["temperature"];
+    return reply["thermostat"]["temperature"].asFloat();
 }
+

kirdy.hpp

@@ -1,13 +1,13 @@
 #pragma once
 
 #include <asio.hpp>
-#include <nlohmann/json.hpp>
+#include <json/json.h>
 
 class Kirdy {
     private:
         asio::io_context io_context;
         asio::ip::tcp::socket *socket;
-        nlohmann::json command(nlohmann::json &request);
+        Json::Value command(Json::Value &request);
     public:
         Kirdy(asio::string_view host, asio::string_view service);
         ~Kirdy();