SenseDevSpec: add NULL checks stringify, ostream::<<

include/user/senseDeviceSpec.h

@@ -8,6 +8,7 @@
 #include <vector>
 #include <string>
 #include <iostream>
+#include <sstream>
 #endif // __cplusplus
 
 #ifdef __cplusplus
@@ -23,6 +24,13 @@ struct SenseDeviceSpec
 
     friend std::ostream& operator<<(
         std::ostream& os, const SenseDeviceSpec& spec);
+
+    bool operator==(const SenseDeviceSpec& other) const
+    {
+        return sensorType == other.sensorType &&
+               provider == other.provider &&
+               deviceSelector == other.deviceSelector;
+    }
 };
 
 struct InteroceptorDeviceSpec : public SenseDeviceSpec
@@ -70,18 +78,50 @@ struct CSenseDeviceSpec
         free(provider);
         free(deviceSelector);
 
-        for (size_t i = 0; apiParams[i] != nullptr; ++i)
+        if (apiParams)
         {
-            free(apiParams[i]);
+            for (size_t i = 0; apiParams[i] != nullptr; ++i) {
+                free(apiParams[i]);
+            }
         }
         delete[] apiParams;
 
-        for (size_t i = 0; providerParams[i] != nullptr; ++i)
+        if (providerParams)
         {
-            free(providerParams[i]);
+            for (size_t i = 0; providerParams[i] != nullptr; ++i) {
+                free(providerParams[i]);
+            }
         }
         delete[] providerParams;
     }
+
+    std::string stringify() const
+    {
+        std::ostringstream os;
+        os << "Device: " << sensorType << ", Implexor: "
+           << (implexor ? implexor : "NULL") << ", API: "
+           << (api ? api : "NULL") << ", API Params: (";
+        if (apiParams)
+        {
+            for (size_t i = 0; apiParams[i] != nullptr; ++i)
+            {
+                os << apiParams[i] << (apiParams[i + 1] == nullptr ? "" : " ");
+            }
+        }
+        os << "), Provider: " << (provider ? provider : "NULL") 
+           << ", Provider Params: (";
+        if (providerParams)
+        {
+            for (size_t i = 0; providerParams[i] != nullptr; ++i)
+            {
+                os << providerParams[i] << (providerParams[i + 1] == nullptr ? "" : " ");
+            }
+        }
+        os << "), Device Selector: "
+           << (deviceSelector ? deviceSelector : "NULL") << std::endl;
+
+        return os.str();
+    }
 #endif
 
     char sensorType;
@@ -93,6 +133,12 @@ struct CSenseDeviceSpec
     char *deviceSelector;
 };
 
+inline std::ostream& operator<<(std::ostream& os, const CSenseDeviceSpec& spec)
+{
+    os << spec.stringify();
+    return os;
+}
+
 #ifdef __cplusplus
 }
 #endif