From Heritrix: (crawler.archive.org)
/**
* CharSequence that noticed thread interrupts -- as might be necessary
* to recover from a loose regex on unexpected challenging input.
*
* @author gojomo
*/
public class InterruptibleCharSequence implements CharSequence {
CharSequence inner;
// public long counter = 0;
public InterruptibleCharSequence(CharSequence inner) {
super();
this.inner = inner;
}
public char charAt(int index) {
if (Thread.interrupted()) { // clears flag if set
throw new RuntimeException(new InterruptedException());
}
// counter++;
return inner.charAt(index);
}
public int length() {
return inner.length();
}
public CharSequence subSequence(int start, int end) {
return new InterruptibleCharSequence(inner.subSequence(start, end));
}
@Override
public String toString() {
return inner.toString();
}
}
Wrap your CharSequence with this one and Thread interrupts will work …