/** push bytes back, to be read again later. */
private void pushback(byte[] bytes, int len) {
if (pushbackBufferLen == 0) {
pushbackBuffer = bytes; // TODO: copy?
pushbackBufferLen = len;
pushbackBufferOffset = 0;
} else {
final byte[] newPushbackBuffer = new byte[pushbackBufferLen + len];
System.arraycopy(pushbackBuffer, 0, newPushbackBuffer, 0, pushbackBufferLen);
System.arraycopy(bytes, 0, newPushbackBuffer, pushbackBufferLen, len);
pushbackBuffer = newPushbackBuffer;
pushbackBufferLen = pushbackBufferLen + len;
pushbackBufferOffset = 0;
}
}
/**
* Gets a <tt>MultiplexedDatagramSocket</tt> which filters <tt>DatagramPacket</tt>s away from this
* <tt>DatagramSocket</tt> using a specific <tt>DatagramPacketFilter</tt>. If such a
* <tt>MultiplexedDatagramSocket</tt> does not exist in this instance, it is created.
*
* @param filter the <tt>DatagramPacketFilter</tt> to get a <tt>MultiplexedDatagramSocket</tt> for
* @return a <tt>MultiplexedDatagramSocket</tt> which filters <tt>DatagramPacket</tt>s away from
* this <tt>DatagramSocket</tt> using the specified <tt>filter</tt>
* @throws SocketException if creating the <tt>MultiplexedDatagramSocket</tt> for the specified
* <tt>filter</tt> fails
*/
public MultiplexedDatagramSocket getSocket(DatagramPacketFilter filter) throws SocketException {
if (filter == null) throw new NullPointerException("filter");
synchronized (socketsSyncRoot) {
/*
* If a socket for the specified filter exists already, do not
* create a new one and return the existing.
*/
for (MultiplexedDatagramSocket socket : sockets)
if (filter.equals(socket.getFilter())) return socket;
// Create a new socket for the specified filter.
MultiplexedDatagramSocket socket = new MultiplexedDatagramSocket(this, filter);
// Remember the new socket.
int socketCount = sockets.length;
if (socketCount == 0) sockets = new MultiplexedDatagramSocket[] {socket};
else {
MultiplexedDatagramSocket[] newSockets = new MultiplexedDatagramSocket[socketCount + 1];
System.arraycopy(sockets, 0, newSockets, 0, socketCount);
newSockets[socketCount] = socket;
sockets = newSockets;
}
return socket;
}
}
/**
* Copies the properties of a specific <tt>DatagramPacket</tt> to another <tt>DatagramPacket</tt>.
* The property values are not cloned.
*
* @param src the <tt>DatagramPacket</tt> which is to have its properties copied to <tt>dest</tt>
* @param dest the <tt>DatagramPacket</tt> which is to have its properties set to the value of the
* respective properties of <tt>src</tt>
*/
public static void copy(DatagramPacket src, DatagramPacket dest) {
synchronized (dest) {
dest.setAddress(src.getAddress());
dest.setPort(src.getPort());
byte[] srcData = src.getData();
if (srcData == null) dest.setLength(0);
else {
byte[] destData = dest.getData();
if (destData == null) dest.setLength(0);
else {
int destOffset = dest.getOffset();
int destLength = destData.length - destOffset;
int srcLength = src.getLength();
if (destLength >= srcLength) destLength = srcLength;
else if (logger.isLoggable(Level.WARNING)) {
logger.log(Level.WARNING, "Truncating received DatagramPacket data!");
}
System.arraycopy(srcData, src.getOffset(), destData, destOffset, destLength);
dest.setLength(destLength);
}
}
}
}
/**
* Closes a specific <tt>MultiplexedDatagramSocket</tt> which filters <tt>DatagramPacket</tt>s
* away from this <tt>DatagramSocket</tt>.
*
* @param multiplexed the <tt>MultiplexedDatagramSocket</tt> to close
*/
void close(MultiplexedDatagramSocket multiplexed) {
synchronized (socketsSyncRoot) {
int socketCount = sockets.length;
for (int i = 0; i < socketCount; i++)
if (sockets[i].equals(multiplexed)) {
if (socketCount == 1) sockets = NO_SOCKETS;
else {
MultiplexedDatagramSocket[] newSockets = new MultiplexedDatagramSocket[socketCount - 1];
System.arraycopy(sockets, 0, newSockets, 0, i);
System.arraycopy(sockets, i + 1, newSockets, i, newSockets.length - i);
sockets = newSockets;
}
break;
}
}
}
/** supports pushback. */
private int read(byte[] buffer, int offset, int length) throws IOException {
if (pushbackBufferLen > 0) { // read from pushback buffer
final int lenToCopy = length < pushbackBufferLen ? length : pushbackBufferLen;
System.arraycopy(pushbackBuffer, pushbackBufferOffset, buffer, offset, lenToCopy);
pushbackBufferLen -= lenToCopy;
pushbackBufferOffset += lenToCopy;
return lenToCopy;
} else {
return stream.read(buffer, offset, length);
}
}
protected static Object[] extractMockArguments(Object[] args) {
int i = 7;
if (args.length > i) {
Object[] mockArgs = new Object[args.length - i];
System.arraycopy(args, i, mockArgs, 0, mockArgs.length);
return mockArgs;
}
return EMPTY_ARGS;
}
private void stripOperandFromArgs() {
// remove the domain-name operand
// it may not be here!
if (args.length < 2 || !StringUtils.ok(serverName)) return;
int newlen = args.length - 1;
if (serverName.equals(args[newlen])) {
String[] newargs = new String[newlen];
System.arraycopy(args, 0, newargs, 0, newlen);
args = newargs;
}
}
// @Override
@Override
public int read(byte[] b, int off, int len) throws IOException {
// TODO: how do we detect IOException?
fillBuffer();
if (buffer.getLength() == 0 && buffer.isEOM()) // TODO: will always be
// EOM if length is 0
return -1;
final byte[] data = (byte[]) buffer.getData();
int lengthToCopy = buffer.getLength() < len ? buffer.getLength() : len;
System.arraycopy(data, buffer.getOffset(), b, off, lengthToCopy);
buffer.setOffset(buffer.getOffset() + lengthToCopy);
buffer.setLength(buffer.getLength() - lengthToCopy);
return lengthToCopy;
}
private void handleDebug() {
if (debug == null) // nothing to do!
return;
stripDebugFromArgs();
stripOperandFromArgs();
int oldlen = args.length;
int newlen = oldlen + 2;
String debugArg = "--debug=" + debug.toString();
String[] newArgs = new String[newlen];
// copy all but the last arg (domain-name)
System.arraycopy(args, 0, newArgs, 0, args.length);
newArgs[newlen - 2] = debugArg;
newArgs[newlen - 1] = serverName;
args = newArgs;
}
public boolean handleCommand(Player player, String[] split) {
try {
split[0] = split[0].substring(1);
// Quick script shortcut
if (split[0].matches("^[^/].*\\.js$")) {
String[] newSplit = new String[split.length + 1];
System.arraycopy(split, 0, newSplit, 1, split.length);
newSplit[0] = "cs";
newSplit[1] = newSplit[1];
split = newSplit;
}
// No command found!
if (!commandMap.hasCommand(split[0])) {
return false;
}
try {
commandMap.execute(split, player, this, player);
} catch (CommandPermissionsException e) {
player.sendMessage("You don't have permission to do this.");
} catch (MissingNestedCommandException e) {
player.sendMessage(e.getUsage());
} catch (CommandUsageException e) {
player.sendMessage(e.getMessage());
player.sendMessage(e.getUsage());
} catch (WrappedCommandException e) {
throw e.getCause();
} catch (UnhandledCommandException e) {
return false;
} finally {
}
} catch (Throwable excp) {
player.sendMessage("Please report this error:");
player.sendMessage(excp.getMessage());
}
return true;
}
public ConstantMatrix cloneMatrixZeroed() {
assert (values != null);
int[] newIndices = new int[indices.length];
System.arraycopy(indices, 0, newIndices, 0, indices.length);
IndexedSparseVector sv =
new IndexedSparseVector(
newIndices,
new double[values.length],
values.length,
values.length,
false,
false,
false);
// Share the index2location array. This will be unsafe if
// IndexedSparseVectors are ever allowed to be modifiable, but I
// don't think that this will be the case.
if (index2location != null) sv.index2location = index2location;
return sv;
}
/**
* @param in input stream to be used (e.g. System.in)
* @param prompt The prompt to display to the user.
* @return The password as entered by the user.
*/
public static final char[] getPassword(InputStream in, String prompt) throws IOException {
MaskingThread maskingthread = new MaskingThread(prompt);
Thread thread = new Thread(maskingthread);
thread.start();
char[] lineBuffer;
char[] buf;
int i;
buf = lineBuffer = new char[128];
int room = buf.length;
int offset = 0;
int c;
loop:
while (true) {
c = in.read();
switch (c) {
case -1:
case '\n':
break loop;
case '\r':
int c2 = in.read();
if ((c2 != '\n') && (c2 != -1)) {
if (!(in instanceof PushbackInputStream)) {
in = new PushbackInputStream(in);
}
((PushbackInputStream) in).unread(c2);
} else {
break loop;
}
default:
if (--room < 0) {
buf = new char[offset + 128];
room = buf.length - offset - 1;
System.arraycopy(lineBuffer, 0, buf, 0, offset);
Arrays.fill(lineBuffer, ' ');
lineBuffer = buf;
}
buf[offset++] = (char) c;
break;
}
}
maskingthread.stopMasking();
System.out.print("\010");
// Code to clear doskey on win nt/2000 - Alt+F7
String os = System.getProperty("os.name");
if (os != null && os.toLowerCase().startsWith("windows")) {
try {
java.awt.Robot robot = new java.awt.Robot();
robot.keyPress(java.awt.event.KeyEvent.VK_ALT);
robot.keyPress(java.awt.event.KeyEvent.VK_F7);
robot.keyRelease(java.awt.event.KeyEvent.VK_F7);
robot.keyRelease(java.awt.event.KeyEvent.VK_ALT);
} catch (Exception ignore) {
logger.warning("Could not clears command history: " + ignore);
}
}
if (offset == 0) {
return null;
}
char[] ret = new char[offset];
System.arraycopy(buf, 0, ret, 0, offset);
Arrays.fill(buf, ' ');
return ret;
}
