The printer(s) cannot be loaded from the state file again after restart pappl

Describe the bug The printer(s) cannot be loaded from the state file again after restart pappl

To Reproduce Steps to reproduce the behavior:

Build and run legacy-printer-app
And several printers on the web page
Shutdown the legacy-printer-app
Run the legacy-printer-app again, the pappl cannot load the printers from the state file again.

Expected behavior The pappl can load the printers from the state file again.

System Information:

OS: Ubuntu22.10
Browser: Firefox
Version: pappl-1.4-x branch

Additional context In the papplSystemSaveState() file, 6 options are saved for a printer.

num_options = cupsAddIntegerOption("id", printer->printer_id, num_options, &options);
num_options = cupsAddOption("name", printer->name, num_options, &options);
num_options = cupsAddOption("did", printer->device_id ? printer->device_id : "", num_options, &options);
num_options = cupsAddOption("uri", printer->device_uri, num_options, &options);
num_options = cupsAddOption("driver", printer->driver_name, num_options, &options);

if (system->options & PAPPL_SOPTIONS_MULTI_QUEUE)
    num_options = cupsAddIntegerOption("state", (int)printer->state, num_options, &options);

But in the papplSystemLoadState(), the printer is skipped when it's option number is not equal to 5.

if ((num_options = cupsParseOptions(value, 0, &options)) != 5 ||
    (printer_id = cupsGetOption("id", num_options, options)) == NULL ||  strtol(printer_id, NULL, 10) <= 0 || 
    (printer_name = cupsGetOption("name", num_options, options)) == NULL || 
    (device_id = cupsGetOption("did", num_options, options)) == NULL || 
    (device_uri = cupsGetOption("uri", num_options, options)) == NULL || 
    (driver_name = cupsGetOption("driver", num_options, options)) == NULL)
    {
     papplLog(system, PAPPL_LOGLEVEL_ERROR, "Bad printer definition on line %d of '%s'.", linenum, filename);
    break;
    }

michaelrsweet / pappl

The printer(s) cannot be loaded from the state file again after restart pappl #298