PrefsOption<T>.parse constructor
PrefsOption<T>.parse( - String prefs
)
Implementation
factory PrefsOption.parse(String prefs) {
final match = _preferencePattern.firstMatch(prefs);
if (match == null) {
return InvalidOption('Not a valid prefs option: "$prefs".')
as PrefsOption<T>;
}
final name = match.group(1)!;
final valueString = match.group(2)!;
if (valueString.startsWith('"') && valueString.endsWith('"')) {
final value = valueString
.substring(1, valueString.length - 1)
.replaceAll(r'\"', '"')
.replaceAll(r'\\', r'\');
return StringOption(name, value) as PrefsOption<T>;
}
if (valueString.toLowerCase() == 'true') {
return BooleanOption(name, true) as PrefsOption<T>;
} else if (valueString.toLowerCase() == 'false') {
return BooleanOption(name, false) as PrefsOption<T>;
}
try {
final value = int.parse(valueString);
return IntegerOption(name, value) as PrefsOption<T>;
} catch (_) {}
return InvalidOption('Not a valid prefs option: "$prefs".')
as PrefsOption<T>;
}