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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.Consumer;
/**
* @author Julien Viet
*/
public class TtyOutputMode implements Consumer {
private final Consumer readHandler;
public TtyOutputMode(Consumer readHandler) {
this.readHandler = readHandler;
}
@Override
public void accept(int[] data) {
if (readHandler != null && data.length > 0) {
int prev = 0;
int ptr = 0;
while (ptr < data.length) {
// Simple implementation that works only on system that uses /n as line terminator
// equivalent to 'stty onlcr'
int cp = data[ptr];
if (cp == '\n') {
if (ptr > prev) {
sendChunk(data, prev, ptr);
}
readHandler.accept(new int[]{'\r','\n'});
prev = ++ptr;
} else {
ptr++;
}
}
if (ptr > prev) {
sendChunk(data, prev, ptr);
}
}
}
private void sendChunk(int[] data, int prev, int ptr) {
int len = ptr - prev;
int[] buf = new int[len];
System.arraycopy(data, prev, buf, 0, len);
readHandler.accept(buf);
}
}