getItemsFromFile function
Get custom items from file as Map from cli arguments
Implementation
Map<String, List<String>>? getItemsFromFile(List<String> arguments) {
var result = <String, List<String>>{};
for (var i = 0; i < arguments.length; i++) {
if (arguments.elementAt(i).toLowerCase() == '-f' ||
arguments.elementAt(i).toLowerCase() == '--file') {
// file argument can be a path/file or key|path/file or key|path/file|name
var fileArgument = arguments.elementAt(i + 1);
var key = fileArgument;
final index = fileArgument.indexOf('|');
if (index > 0) {
key = fileArgument.substring(0, index);
fileArgument = fileArgument.substring(index + 1, fileArgument.length);
}
//print(key);
var file = File(fileArgument);
result.putIfAbsent(
key, () => file.readAsLinesSync().toList(growable: false));
i++;
}
}
return result;
}