public Writer flush() {
try {
if (appendable instanceof Flushable) {
Flushable flushable = (Flushable) appendable;
flushable.flush();
}
} catch (java.io.IOException e) {
throw new IOException(e);
}
return this;
}
/** @param targets objects to flush, null is permitted */
public static void flush(final Flushable... targets) {
if (targets != null) {
for (Flushable f : targets) {
if (f == null) {
continue;
}
try {
f.flush();
} catch (IOException e) {
log.trace(e.getMessage(), e);
}
}
}
}
@Override
public void flush() throws IOException {
checkNotClosed();
if (target instanceof Flushable) {
((Flushable) target).flush();
}
}
/**
* 安全刷新一个可刷新的对象，可接受 null
*
* @param fa 可刷新对象
*/
public static void safeFlush(Flushable fa) {
if (null != fa)
try {
fa.flush();
} catch (IOException e) {
}
}
public void flushQuietly(Flushable s) {
if (s != null) {
try {
s.flush();
} catch (IOException e) {
e.printStackTrace();
}
}
}
@Override
protected void runTask() throws Exception {
progress.setState(State.RUNNING);
int mergeCount = 0;
T a = sourceA.hasNext() ? sourceA.read() : null;
T b = sourceB.hasNext() ? sourceB.read() : null;
while (a != null && b != null) {
final int c = comparator.compare(a, b);
if (c < 0) {
sink.write(a);
a = sourceA.hasNext() ? sourceA.read() : null;
} else if (c > 0) {
sink.write(b);
b = sourceB.hasNext() ? sourceB.read() : null;
} else {
sink.write(a);
sink.write(b);
a = sourceA.hasNext() ? sourceA.read() : null;
b = sourceB.hasNext() ? sourceB.read() : null;
}
++mergeCount;
if (mergeCount % 1000000 == 0) {
progress.setMessage(MessageFormat.format("Merged {0} unique items.", mergeCount));
}
}
while (a != null) {
sink.write(a);
a = sourceA.hasNext() ? sourceA.read() : null;
++mergeCount;
if (mergeCount % 1000000 == 0) {
progress.setMessage(MessageFormat.format("Merged {0} unique items.", mergeCount));
}
}
while (b != null) {
sink.write(b);
b = sourceB.hasNext() ? sourceB.read() : null;
++mergeCount;
if (mergeCount % 1000000 == 0) {
progress.setMessage(MessageFormat.format("Merged {0} unique items.", mergeCount));
}
}
progress.startAdjusting();
progress.setMessage(MessageFormat.format("Merged {0} unique items.", mergeCount));
progress.setState(State.COMPLETED);
progress.endAdjusting();
if (sink instanceof Flushable) ((Flushable) sink).flush();
}
public static void flush(Flushable var0, boolean var1) throws IOException {
try {
var0.flush();
} catch (IOException var5) {
Logger var3 = logger;
Level var4 = Level.WARNING;
var3.log(var4, "IOException thrown while flushing Flushable.", var5);
if (!var1) {
throw var5;
}
}
}
protected boolean flush(Flushable flushable) {
if (flushable != null) {
try {
flushable.flush();
return true;
} catch (IOException e) {
// mute
}
}
return false;
}
public static void close(final Closeable closeable) {
if (closeable == null) return;
try {
if (Flushable.class.isInstance(closeable)) {
((Flushable) closeable).flush();
}
} catch (Throwable e) {
// Ignore
}
try {
closeable.close();
} catch (Throwable e) {
// Ignore
}
}
/**
* Method that will close an {@link java.io.Closeable} ignoring it if it is null and ignoring
* exceptions.
*
* @param closeable the closeable to close.
* @since jEdit 4.3pre8
*/
public static void closeQuietly(Closeable closeable) {
if (closeable != null) {
try {
if (closeable instanceof Flushable) {
((Flushable) closeable).flush();
}
} catch (IOException e) {
// ignore
}
try {
closeable.close();
} catch (IOException e) {
// ignore
}
}
} // }}}
/**
* Method that will close a {@link Writer} ignoring it if it is null and ignoring exceptions.
*
* @param out the Writer to close.
*/
public static void closeQuietly(Writer out) {
if (out != null) {
try {
if (out instanceof Flushable) {
((Flushable) out).flush();
}
} catch (IOException e) {
// ignore
}
try {
out.close();
} catch (IOException e) {
// ignore
}
}
}
public static void flushAndCloseQuietly(Closeable closeable) {
if (closeable == null) {
return; // nothing to do
}
try {
if (closeable instanceof Flushable) {
((Flushable) closeable).flush();
}
} catch (IOException e) {
/* ignore */
}
try {
closeable.close();
} catch (IOException ignore) {
/* ignore */
}
}
private static void close(Closeable[] streams, int idx) throws IOException {
if (idx >= streams.length) {
return; // done
}
Closeable stream = streams[idx];
try {
if (stream != null) {
if (stream instanceof Flushable) {
((Flushable) stream).flush();
}
stream.close();
}
} catch (IOException ex) {
if (!(stream instanceof InputStream || stream instanceof Reader)) {
throw ex; // ignore io exceptions for input streams and readers
}
} finally {
close(streams, idx + 1);
}
}
private void flush(GaugeWriter writer) {
if (writer instanceof CompositeMetricWriter) {
for (MetricWriter child : (CompositeMetricWriter) writer) {
flush(child);
}
}
try {
if (ClassUtils.isPresent("java.io.Flushable", null)) {
if (writer instanceof Flushable) {
((Flushable) writer).flush();
return;
}
}
Method method = ReflectionUtils.findMethod(writer.getClass(), "flush");
if (method != null) {
ReflectionUtils.invokeMethod(method, writer);
}
} catch (Exception ex) {
logger.warn("Could not flush MetricWriter: " + ex.getClass() + ": " + ex.getMessage());
}
}
public static void flush(Object o) throws IOException {
if (o instanceof Flushable) ((Flushable) o).flush();
}
public void flush() throws IOException {
if (delegate instanceof Flushable) {
((Flushable) delegate).flush();
}
}
@Override
public void flush(@Nonnull Flushable flushable) throws IOException {
if (shouldFlush()) flushable.flush();
}
