diff options
Diffstat (limited to 'plugins/org.eclipse.net4j.buddies.common/src/org/eclipse/net4j/buddies/internal/common/protocol/ProtocolUtil.java')
| -rw-r--r-- | plugins/org.eclipse.net4j.buddies.common/src/org/eclipse/net4j/buddies/internal/common/protocol/ProtocolUtil.java | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/plugins/org.eclipse.net4j.buddies.common/src/org/eclipse/net4j/buddies/internal/common/protocol/ProtocolUtil.java b/plugins/org.eclipse.net4j.buddies.common/src/org/eclipse/net4j/buddies/internal/common/protocol/ProtocolUtil.java new file mode 100644 index 0000000000..674bfc6b0c --- /dev/null +++ b/plugins/org.eclipse.net4j.buddies.common/src/org/eclipse/net4j/buddies/internal/common/protocol/ProtocolUtil.java @@ -0,0 +1,225 @@ +/*************************************************************************** + * Copyright (c) 2004 - 2008 Eike Stepper, Germany. + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * Eike Stepper - initial API and implementation + **************************************************************************/ +package org.eclipse.net4j.buddies.internal.common.protocol; + +import org.eclipse.net4j.buddies.common.IAccount; +import org.eclipse.net4j.buddies.common.IBuddy; +import org.eclipse.net4j.buddies.common.IBuddyContainer; +import org.eclipse.net4j.buddies.common.IMessage; +import org.eclipse.net4j.util.WrappedException; +import org.eclipse.net4j.util.io.ExtendedDataInputStream; +import org.eclipse.net4j.util.io.ExtendedDataOutputStream; + +import java.io.IOException; +import java.io.ObjectInputStream; +import java.io.ObjectOutputStream; +import java.io.ObjectStreamClass; +import java.util.Collection; +import java.util.HashSet; +import java.util.Set; + +/** + * @author Eike Stepper + */ +public final class ProtocolUtil +{ + private ProtocolUtil() + { + } + + public static void writeBuddies(ExtendedDataOutputStream out, Collection<IBuddy> buddies) throws IOException + { + if (buddies == null) + { + out.writeInt(0); + } + else + { + out.writeInt(buddies.size()); + for (IBuddy buddy : buddies) + { + out.writeString(buddy.getUserID()); + } + } + } + + public static Set<IBuddy> readBuddies(ExtendedDataInputStream in, IBuddyContainer buddyContainer) throws IOException + { + int size = in.readInt(); + Set<IBuddy> buddies = new HashSet<IBuddy>(); + for (int i = 0; i < size; i++) + { + String userID = in.readString(); + IBuddy buddy = buddyContainer.getBuddy(userID); + if (buddy != null) + { + buddies.add(buddy); + } + } + return buddies; + } + + public static String[] readUserIDs(ExtendedDataInputStream in) throws IOException + { + int size = in.readInt(); + String[] userIDs = new String[size]; + for (int i = 0; i < size; i++) + { + userIDs[i] = in.readString(); + } + + return userIDs; + } + + public static void writeAccount(ExtendedDataOutputStream out, IAccount account) throws IOException + { + if (account != null) + { + out.writeBoolean(true); + ObjectOutputStream oos = new ObjectOutputStream(out); + oos.writeObject(account); + } + else + { + out.writeBoolean(false); + } + } + + public static IAccount readAccount(ExtendedDataInputStream in) throws IOException + { + boolean exists = in.readBoolean(); + if (!exists) + { + return null; + } + + try + { + ObjectInputStream ois = new ObjectInputStream(in); + return (IAccount)ois.readObject(); + } + catch (IOException ex) + { + throw ex; + } + catch (Exception ex) + { + throw WrappedException.wrap(ex); + } + } + + public static void writeState(ExtendedDataOutputStream out, IBuddy.State state) throws IOException + { + switch (state) + { + case AVAILABLE: + out.writeByte(ProtocolConstants.STATE_AVAILABLE); + break; + + case LONESOME: + out.writeByte(ProtocolConstants.STATE_LONESOME); + break; + + case AWAY: + out.writeByte(ProtocolConstants.STATE_AWAY); + break; + + case DO_NOT_DISTURB: + out.writeByte(ProtocolConstants.STATE_DO_NOT_DISTURB); + break; + + default: + throw new IllegalArgumentException("Illegal state: " + state); + } + } + + public static IBuddy.State readState(ExtendedDataInputStream in) throws IOException + { + byte state = in.readByte(); + switch (state) + { + case ProtocolConstants.STATE_AVAILABLE: + return IBuddy.State.AVAILABLE; + + case ProtocolConstants.STATE_LONESOME: + return IBuddy.State.LONESOME; + + case ProtocolConstants.STATE_AWAY: + return IBuddy.State.AWAY; + + case ProtocolConstants.STATE_DO_NOT_DISTURB: + return IBuddy.State.DO_NOT_DISTURB; + + default: + throw new IllegalArgumentException("Illegal state: " + state); + } + } + + public static void writeFacilityTypes(ExtendedDataOutputStream out, String[] facilityTypes) throws IOException + { + if (facilityTypes == null) + { + out.writeInt(0); + } + else + { + out.writeInt(facilityTypes.length); + for (String facilityType : facilityTypes) + { + out.writeString(facilityType); + } + } + } + + public static String[] readFacilityTypes(ExtendedDataInputStream in) throws IOException + { + int size = in.readInt(); + String[] facilityTypes = new String[size]; + for (int i = 0; i < size; i++) + { + facilityTypes[i] = in.readString(); + } + + return facilityTypes; + } + + public static void writeMessage(ExtendedDataOutputStream out, IMessage message) throws IOException + { + ObjectOutputStream oos = new ObjectOutputStream(out); + oos.writeObject(message); + } + + public static IMessage readMessage(ExtendedDataInputStream in, final ClassLoader classLoader) throws IOException + { + try + { + ObjectInputStream ois = new ObjectInputStream(in) + { + @Override + protected Class<?> resolveClass(ObjectStreamClass desc) throws IOException, ClassNotFoundException + { + String className = desc.getName(); + return classLoader.loadClass(className); + } + }; + + return (IMessage)ois.readObject(); + } + catch (IOException ex) + { + throw ex; + } + catch (Exception ex) + { + throw WrappedException.wrap(ex); + } + } +} |