load libcurl at runtime (#33)

* load libcurl at runtime

* add warning to file tab if curl cant be loaded

src/headers/curl-helper.hpp

@@ -0,0 +1,26 @@
+#pragma once
+#include <curl/curl.h>
+#include <QLibrary>
+
+#if defined(WIN32)
+#define CURL_LIBRARY_NAME "libcurl.dll"
+#elif __APPLE__
+#define CURL_LIBRARY_NAME "libcurl.4.dylib"
+#else
+#define CURL_LIBRARY_NAME "libcurl.so.4"
+#endif
+
+typedef CURL *(*initFunction)(void);
+typedef CURLcode (*setOptFunction)(CURL *, CURLoption, ...);
+typedef CURLcode (*performFunction)(CURL *);
+typedef void (*cleanupFunction)(CURL *);
+
+extern initFunction f_curl_init;
+extern setOptFunction f_curl_setopt;
+extern performFunction f_curl_perform;
+extern cleanupFunction f_curl_cleanup;
+
+extern QLibrary *loaded_curl_lib;
+
+bool resolveCurl();
+bool loadCurl();

src/headers/switcher-data-structs.hpp

@@ -8,6 +8,7 @@
 #include <fstream>
 #include <QDateTime>
 #include <QThread>
+#include <curl/curl.h>
 #include "utility.hpp"
 
 #define DEFAULT_INTERVAL 300
@@ -309,6 +310,7 @@ struct SwitcherData {
 	FileIOData fileIO;
 	IdleData idleData;
 	std::vector<FileSwitch> fileSwitches;
+	CURL *curl = nullptr;
 
 	std::vector<ExecutableSceneSwitch> executableSwitches;