fix(program): add defensive null checks and fix syntax error

CMakeLists.txt

@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.20)
 
-project(cpp-workspace VERSION 0.4.0 LANGUAGES CXX)
+project(cpp-workspace VERSION 0.4.1 LANGUAGES CXX)
 
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)

conanfile.py

@@ -8,10 +8,11 @@ class AppConan(ConanFile):
     generators = "CMakeDeps", "CMakeToolchain"
 
     def requirements(self):
-        self.requires("fmt/11.2.0")
-        self.requires("libcurl/8.5.0")
-        self.requires("nlohmann_json/3.11.2")
-        self.requires("ncurses/6.5")
+        if self.requires != None:
+            self.requires("fmt/11.2.0")
+            self.requires("libcurl/8.5.0")
+            self.requires("nlohmann_json/3.11.2")
+            self.requires("ncurses/6.5")
 
     def layout(self):
         cmake_layout(self)

src/ollama/ollama_client.cpp

@@ -182,7 +182,7 @@ void OllamaClient::process_response_stream(const std::string& line) {
 #ifdef DEBUG
     if (this->ui->is_running() == false) {
         UserInterface::print_message_noninteractive(
-            std::format("\t[DEBUG] process_response_stream called with line: {}\n", << line.substr(0, 100)));
+            std::format("\t[DEBUG] process_response_stream called with line: {}\n", line.substr(0, 100)));
     }
 #endif
 

src/utils/curl_utils.cpp

@@ -67,9 +67,26 @@ void CurlUtils::initialize() {
  * @note Assumes cleanup operations succeed without error checking.
  */
 void CurlUtils::cleanup() {
-    curl_easy_cleanup(this->curl);
-    curl_slist_free_all(this->headers);
-    this->headers = nullptr;
+    if (this->curl) {
+#ifdef DEBUG
+        if (this->ui->is_running() == false) {
+            UserInterface::print_message_noninteractive(
+                std::format("\t[DEBUG] curl pointer before cleanup: {}\n", static_cast<void*>(this->curl)));
+        }
+#endif
+        curl_easy_cleanup(this->curl);
+        this->curl = nullptr;
+    }
+    if (this->headers) {
+#ifdef DEBUG
+        if (this->ui->is_running() == false) {
+            UserInterface::print_message_noninteractive(
+                std::format("\t[DEBUG] curl headers pointer before cleanup: {}\n", static_cast<void*>(this->headers)));
+        }
+#endif
+        curl_slist_free_all(this->headers);
+        this->headers = nullptr;
+    }
     std::string message = "CURL cleanup is complete.\n";
     if (this->ui->is_running() == false) {
         UserInterface::print_success_noninteractive(message);