Function folder_scan_thread

src/source.cpp:2422–2548

static Folder_Scan_Thread_Data folder_scan_data;

DWORD WINAPI folder_scan_thread(LPVOID lpParam) {
    DLOG_SCAN("folder_scan_thread STARTED");
	Folder_Scan_Thread_Data *data = (Folder_Scan_Thread_Data *)lpParam;
	wchar_t *full_path = data->full_path;
	wchar_t *filename = data->filename;
    debug_log_wstr("SCAN", "full_path", full_path);
    debug_log_wstr("SCAN", "filename", filename);
	G->scanning_folder = true;
    DLOG_SCAN("G->scanning_folder = true");

	int len = wcslen(full_path);
	int newlen = len;
	for (int i = len - 1; i > 0; i--) {
		if (full_path[i] == '/' || full_path[i] == '\\') {
			newlen = i + 1;
			break;
		}
	}

	wchar_t *BasePath = (wchar_t *)malloc((newlen + 1) * sizeof(wchar_t));
	memcpy(BasePath, full_path, newlen * sizeof(wchar_t));
	BasePath[newlen] = L'\0';
    debug_log_wstr("SCAN", "BasePath", BasePath);

	if (!is_valid_windows_path(BasePath)) {
        DLOG_ERROR("Invalid Windows path");
		free(BasePath);
		G->scanning_folder = false;
		if (G->folder_scan_event) SetEvent(G->folder_scan_event);
		return 0;
	}

	cf_dir_t dir;
    DLOG_SCAN("Opening directory");
	cf_dir_open(&dir, BasePath);
    DLOG_SIGNAL("Sending new_folder signal");
	send_signal(G->signals.new_folder);
    DLOG_MUTEX("Entering G->thumbs_mutex for folder_scan");
	EnterCriticalSection(&G->thumbs_mutex);

	File_Data current_file_state = {0};
	bool had_current_file = G->files.Count > 0;
	if (had_current_file) current_file_state = G->files[0];
    DLOG_SCAN("Resetting files array, had_current_file=%d", had_current_file);
	G->files.reset_count();

    int files_found = 0;
	while (dir.has_next) {
		cf_file_t file_0;
		cf_read_file(&dir, &file_0);
		if (file_0.is_dir) { cf_dir_next(&dir); continue; }
		remove_char(file_0.path, '/');

		int type = check_valid_extention(file_0.ext);
		if (type == TYPE_UNKNOWN) { cf_dir_next(&dir); continue; }

		File_Data new_file = {0};
		new_file.type = type;