@Override
public String readLine() throws IOException {
if (buffer.size() > 0) {
return buffer.remove(0);
} else {
String line = super.readLine();
if (line == null) {
return null;
}
buffer.addAll(lineExpander.expandLine(line));
return buffer.remove(0);
}
}
@Override
protected List<String> expandLine(String line) {
return lineExpander.expandLine(line);
}