Linux compatible implementation of searching ./expansions/

Linux uses dirent syscalls to search ./expansions/ for dard databases
to load.

gframe/game.cpp

@@ -27,7 +27,6 @@ bool Game::Initialize() {
 	_finddata_t fdata;
 	long fhandle;
 	char fpath[1000] = "./expansions/";
-	char fpath[1000] = "expansions\\";
 #endif
 	srand(time(0));
 	LoadConfig();
@@ -76,6 +75,25 @@ bool Game::Initialize() {
 		}
 		_findclose(fhandle);
 	}
+#else
+        DIR * dir;
+        struct dirent * dirp;
+        const char *foldername = "./expansions/";
+        if((dir = opendir(foldername)) != NULL) {
+	        while((dirp = readdir(dir)) != NULL) {
+		        size_t len = strlen(dirp->d_name);
+		        if(len < 5 || strcasecmp(dirp->d_name + len - 4, ".cdb") != 0)
+			        continue;
+                        char *filepath = (char *)malloc(sizeof(char)*(len + strlen(foldername)));
+                        strncpy(filepath, foldername, strlen(foldername)+1);
+                        strncat(filepath, dirp->d_name, len);
+                        std::cout << "Found file " << filepath << std::endl;
+                        if (!dataManager.LoadDB(filepath))
+	                        std::cout << "Error loading file" << std::endl;
+                        free(filepath);
+	        }
+	        closedir(dir);
+        }
 #endif
 	env = device->getGUIEnvironment();
 	numFont = irr::gui::CGUITTFont::createTTFont(env, gameConf.numfont, 16);