/** {@inheritDoc} */
public int read() throws IOException {
synchronized (file) {
int retval = -1;
if (currentPosition < endPosition) {
file.seek(currentPosition);
currentPosition++;
retval = file.read();
}
return retval;
}
}
/** {@inheritDoc} */
public int read(byte[] b, int offset, int length) throws IOException {
// only allow a read of the amount available.
if (length > available()) {
length = available();
}
int amountRead = -1;
// only read if there are bytes actually available, otherwise
// return -1 if the EOF has been reached.
if (available() > 0) {
synchronized (file) {
file.seek(currentPosition);
amountRead = file.read(b, offset, length);
}
}
// update the current cursor position.
if (amountRead > 0) {
currentPosition += amountRead;
}
return amountRead;
}