read method
Reads the bytes at the given range.
When range
is null, the whole content is returned. Out-of-range indexes are clamped to the
available length automatically.
Implementation
@override
Future<ResourceTry<ByteData>> read({IntRange? range}) async =>
(await bytes()).map((value) {
if (range == null) {
return value;
}
IntRange range2 =
IntRange(max(0, range.first), min(range.last, value.lengthInBytes));
return value.buffer.asByteData(range2.first, range2.length);
});