wgzUri function
Implementation
Uri wgzUri(String filename, int offset, int length,
[int? offset2, int? length2]) {
final fragment = StringBuffer('$offset+$length');
if (offset2 != null && offset2 != offset) {
fragment.write('/$offset2+$length2');
}
return Uri(scheme: 'wgz', path: filename, fragment: fragment.toString());
}