Graceful failing on missing data

2019-09-23 16:57:54 +02:00
parent d28128009b
commit 8b79ca4152
3 changed files with 21 additions and 9 deletions
@@ -4,13 +4,15 @@ DescriptorManager::DescriptorManager() {} //don't use this
 DescriptorManager::DescriptorManager(const fs::path & image_path) {
 	img_path = image_path;
 	if (!fs::exists(img_path)) {
-		cout << "Error. Data folder not found." << endl;
-		return; //No data: giving up.
+		throw std::invalid_argument("Data missing");
 	}
 	numImages = std::count_if(
 		fs::directory_iterator(img_path),
 		fs::directory_iterator(),
 		static_cast<bool(*)(const fs::path&)>(fs::is_regular_file));
+	if (numImages <= 0) {
+		throw std::invalid_argument("Data missing");
+	}
 	current_image = NULL;
 	//Manual definitions.. SAD!
 	descriptor_types[7] = new DCTMedian();