/**
* Copy an input stream to an output stream.
*
* @param bufferSize the size of the buffer
* @param progress the progress observer it could be null
* @param in the input stream
* @param out the output stream
* @param canStop if true, the copy can be stopped by interrupting the thread
* @return <code>true</code> if the copy was done, <code>false</code> if it was interrupted
* @throws IOException IOException If an I/O error occurs
*/
public static boolean copyStream(
int bufferSize, ProgressObserver progress, InputStream in, OutputStream out, boolean canStop)
throws IOException {
byte[] buffer = new byte[bufferSize];
int n;
long copied = 0L;
while (-1 != (n = in.read(buffer))) {
out.write(buffer, 0, n);
copied += n;
if (progress != null) progress.setValue(copied);
if (canStop && Thread.interrupted()) return false;
}
return true;
}
