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An open source terminal daemon library providing terminal handling in Java,
back ported to Alibaba by core engine team to support running on JDK 6+.
/*
* Copyright 2015 Julien Viet
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.termd.core.tty;
import io.termd.core.function.BiConsumer;
import io.termd.core.function.Consumer;
/**
* @author Julien Viet
*/
public class TtyEventDecoder implements Consumer {
private Consumer readHandler;
private BiConsumer eventHandler;
private final int vintr;
private final int veof;
private final int vsusp;
public TtyEventDecoder(int vintr, int vsusp, int veof) {
this.vintr = vintr;
this.vsusp = vsusp;
this.veof = veof;
}
public Consumer getReadHandler() {
return readHandler;
}
public TtyEventDecoder setReadHandler(Consumer readHandler) {
this.readHandler = readHandler;
return this;
}
public BiConsumer getEventHandler() {
return eventHandler;
}
public TtyEventDecoder setEventHandler(BiConsumer eventHandler) {
this.eventHandler = eventHandler;
return this;
}
@Override
public void accept(int[] data) {
if (eventHandler != null) {
int index = 0;
while (index < data.length) {
int val = data[index];
TtyEvent event = null;
if (val == vintr) {
event = TtyEvent.INTR;
} else if (val == vsusp) {
event = TtyEvent.SUSP;
} else if (val == veof) {
event = TtyEvent.EOF;
}
if (event != null) {
if (eventHandler != null) {
if (readHandler != null) {
int[] a = new int[index];
if (index > 0) {
System.arraycopy(data, 0, a, 0, index);
readHandler.accept(a);
}
}
eventHandler.accept(event, val);
int[] a = new int[data.length - index - 1];
System.arraycopy(data, index + 1, a, 0, a.length);
data = a;
index = 0;
continue;
}
}
index++;
}
}
if (readHandler != null && data.length > 0) {
readHandler.accept(data);
}
}
}