Add helper methods for creating string representations of ColorContainer

Author: maxnz

src/AnimationData.hpp

@@ -223,6 +223,18 @@ class AnimationData {
             std::cerr << "Bad type for spacing" << data["spacing"].type_name() << std::endl;
     }
 
+    std::string colorsString() {
+        std::string cols = "[";
+
+        for (auto c : colors) {
+            cols.append(c.colorsString(true));
+            cols.append(",");
+        }
+        if (!colors.empty())
+            cols.pop_back();
+        cols.append("]");
+        return cols;
+    }
 
     int json(char ** buff) const {
         std::string data = "DATA:{";

src/AnimationSender.hpp

@@ -155,7 +155,7 @@ class AnimationSender {
 
     int connect() {
         if (::connect(socket_desc, (struct sockaddr *) &sa, sizeof(sa)) < 0) {
-            perror("connect()");
+            perror((host_name + " " + std::to_string(port_num) + " connect()").c_str());
             return -1;
         }
         return 0;

src/ColorContainer.hpp

@@ -52,16 +52,25 @@ class ColorContainer {
             std::cerr << "Bad type for ColorContainer colors" << data["colors"].type_name() << std::endl;
     }
 
-    int json(char ** buff) {
-        std::string data = R"({"colors":[)";
-
+    std::string colorsString(bool hex = false) {
+        std::string data = "[";
         for (auto c : colors) {
-            data.append(std::to_string(c));
-            data.append(",");
+            std::stringstream ss;
+            if (hex) ss << "0x" << std::hex;
+            ss << c << ",";
+            data.append(ss.str());
         }
         if (!colors.empty())
             data.pop_back();
-        data.append("]}");
+        data.append("]");
+        return data;
+    }
+
+    int json(char ** buff) {
+        std::string data = R"({"colors":)";
+
+        data.append(colorsString(false));
+        data.append("}");
 
         strcpy(*buff, data.c_str());
         return data.size();