mirror of git://gcc.gnu.org/git/gcc.git
111 lines
3.2 KiB
Java
111 lines
3.2 KiB
Java
/* BlockOutputStream.java --
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Copyright (C) 2003, 2004 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.java.net.protocol.ftp;
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import java.io.IOException;
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import java.io.OutputStream;
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/**
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* A DTP output stream that implements the FTP block transfer mode.
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*
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* @author Chris Burdess (dog@gnu.org)
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*/
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class BlockOutputStream
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extends DTPOutputStream
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{
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static final byte RECORD = -128; // 0x80
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static final byte EOF = 64; // 0x40
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BlockOutputStream(DTP dtp, OutputStream out)
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{
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super(dtp, out);
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}
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public void write(int c)
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throws IOException
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{
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if (transferComplete)
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{
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return;
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}
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byte[] buf = new byte[]
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{
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RECORD, /* record descriptor */
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0x00, 0x01, /* one byte */
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(byte) c /* the byte */
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};
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out.write(buf, 0, 4);
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}
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public void write(byte[] b)
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throws IOException
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{
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write(b, 0, b.length);
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}
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public void write(byte[] b, int off, int len)
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throws IOException
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{
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if (transferComplete)
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{
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return;
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}
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byte[] buf = new byte[len + 3];
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buf[0] = RECORD; /* record descriptor */
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buf[1] = (byte) ((len & 0x00ff) >> 8); /* high byte of bytecount */
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buf[2] = (byte) (len & 0xff00); /* low byte of bytecount */
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System.arraycopy(b, off, buf, 3, len);
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out.write(buf, 0, len);
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}
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public void close()
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throws IOException
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{
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byte[] buf = new byte[]
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{
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EOF, /* eof descriptor */
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0x00, 0x00 /* no bytes */
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};
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out.write(buf, 0, 3);
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super.close();
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}
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}
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