view app/src/main/java/ch/ethz/ssh2/channel/ChannelInputStream.java @ 493:0a17c6e7cb0f
stable-1.9.4-3
improve Makefile
author |
Carl Byington <carl@five-ten-sg.com> |
date |
Tue, 15 Feb 2022 14:07:00 -0800 (2022-02-15) |
parents |
d29cce60f393 |
children |
|
line source
/*
* Copyright (c) 2006-2011 Christian Plattner. All rights reserved.
* Please refer to the LICENSE.txt for licensing details.
*/
package ch.ethz.ssh2.channel;
import java.io.IOException;
import java.io.InputStream;
/**
* ChannelInputStream.
*
* @author Christian Plattner
* @version 2.50, 03/15/10
*/
public final class ChannelInputStream extends InputStream {
Channel c;
boolean isClosed = false;
boolean isEOF = false;
boolean extendedFlag = false;
ChannelInputStream(Channel c, boolean isExtended) {
this.c = c;
this.extendedFlag = isExtended;
}
@Override
public int available() throws IOException {
if (isEOF)
return 0;
int avail = c.cm.getAvailable(c, extendedFlag);
/* We must not return -1 on EOF */
return (avail > 0) ? avail : 0;
}
@Override
public void close() throws IOException {
isClosed = true;
}
@Override
public int read(byte[] b, int off, int len) throws IOException {
if (b == null)
throw new NullPointerException();
if ((off < 0) || (len < 0) || ((off + len) > b.length) || ((off + len) < 0) || (off > b.length))
throw new IndexOutOfBoundsException();
if (len == 0)
return 0;
if (isEOF)
return -1;
int ret = c.cm.getChannelData(c, extendedFlag, b, off, len);
if (ret == -1) {
isEOF = true;
}
return ret;
}
@Override
public int read(byte[] b) throws IOException {
return read(b, 0, b.length);
}
@Override
public int read() throws IOException {
/* Yes, this stream is pure and unbuffered, a single byte read() is slow */
final byte b[] = new byte[1];
int ret = read(b, 0, 1);
if (ret != 1)
return -1;
return b[0] & 0xff;
}
}