Fixed negative width bug when files are 0 and added copy&delete mode

main.cpp

@@ -85,8 +85,8 @@ int main()
     std::string output = config_data["output_dir"];
     std::vector<std::string> extensions = config_data["extensions"];
     std::string mode = config_data["mode"];
-    if(mode != "copy" && mode != "move")
-        throw std::runtime_error("Incorrect option for mode. Available options: [copy, move]");
+    if(mode != "copy" && mode != "move" && mode != "copy&delete")
+        throw std::runtime_error("Incorrect option for mode. Available options: [copy, move, copy&delete]");
     fmt::print("Selected mode: {}\n", mode);
 
     size_t count = 0, duplicates = 0;
@@ -97,6 +97,9 @@ int main()
         if(std::filesystem::is_regular_file(dir_entry.path()) && std::find(extensions.begin(), extensions.end(), dir_entry.path().extension()) != extensions.end())
             file_count++;
     fmt::print("Files to be operated: {}\n", file_count);
+
+    if(file_count == 0)
+        exit(0);
 
     std::vector<std::string> duplicate_list; duplicate_list.reserve(file_count);
     std::vector<std::pair<std::string, std::string>> renamed_list; renamed_list.reserve(file_count);
@@ -155,6 +158,11 @@ int main()
                     std::filesystem::copy_file(dir_entry.path(), output_file);
                 else if(mode == "move")
                     std::filesystem::rename(dir_entry.path(), output_file);
+                else if(mode == "copy&delete")
+                {
+                    std::filesystem::copy_file(dir_entry.path(), output_file);
+                    std::filesystem::remove(dir_entry.path());
+                }
                 count++;
             }
         }

rmg_config.json

@@ -1,10 +1,12 @@
 {
-    "input_dir": "PlayerVisualization",
-    "output_dir": "roha",
-    "extensions": [".cpp", ".json", ".txt"],
+    "input_dir": "/run/user/1000/gvfs/mtp:host=SAMSUNG_SAMSUNG_Android_RZ8N906GZPH/Phone/SendAnywhere",
+    "output_dir": "/run/media/rohan/Media/Photos",
+    "extensions": [".JPG", ".jpeg"],
 
-    // Valid options are "copy" and "move"
-    // copy means files are copied from input_dir to output_dir while move means files are moved
+    // Valid options are "copy", "move", "copy&delete"
+    // copy means files are copied from input_dir to output_dir 
+    // move means files are moved
+    // copy&delete means the file is copied from input_dir and then deleted; this mode is a fallback to be selected when move fails
 
     "mode": "copy"
 }