91 lines
3.2 KiB
Java
91 lines
3.2 KiB
Java
/* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
|
|
/*
|
|
Copyright (c) 2011 ymnk, JCraft,Inc. All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are met:
|
|
|
|
1. Redistributions of source code must retain the above copyright notice,
|
|
this list of conditions and the following disclaimer.
|
|
|
|
2. Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in
|
|
the documentation and/or other materials provided with the distribution.
|
|
|
|
3. The names of the authors may not be used to endorse or promote products
|
|
derived from this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
|
|
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
|
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
|
|
INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
|
|
OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
|
|
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
package com.jcraft.jzlib;
|
|
import java.io.*;
|
|
|
|
public class GZIPOutputStream extends DeflaterOutputStream {
|
|
|
|
public GZIPOutputStream(OutputStream out) throws IOException {
|
|
this(out, DEFAULT_BUFSIZE);
|
|
}
|
|
|
|
public GZIPOutputStream(OutputStream out, int size) throws IOException {
|
|
this(out, size, true);
|
|
}
|
|
|
|
public GZIPOutputStream(OutputStream out,
|
|
int size,
|
|
boolean close_out) throws IOException {
|
|
this(out,
|
|
new Deflater(JZlib.Z_DEFAULT_COMPRESSION, 15+16),
|
|
size, close_out);
|
|
mydeflater=true;
|
|
}
|
|
|
|
public GZIPOutputStream(OutputStream out,
|
|
Deflater deflater,
|
|
int size,
|
|
boolean close_out) throws IOException{
|
|
super(out, deflater, size, close_out);
|
|
}
|
|
|
|
|
|
private void check() throws GZIPException {
|
|
if(deflater.dstate.status != 42 /*INIT_STATUS*/)
|
|
throw new GZIPException("header is already written.");
|
|
}
|
|
|
|
public void setModifiedTime(long mtime) throws GZIPException {
|
|
check();
|
|
deflater.dstate.getGZIPHeader().setModifiedTime(mtime);
|
|
}
|
|
|
|
public void setOS(int os) throws GZIPException {
|
|
check();
|
|
deflater.dstate.getGZIPHeader().setOS(os);
|
|
}
|
|
|
|
public void setName(String name) throws GZIPException {
|
|
check();
|
|
deflater.dstate.getGZIPHeader().setName(name);
|
|
}
|
|
|
|
public void setComment(String comment) throws GZIPException {
|
|
check();
|
|
deflater.dstate.getGZIPHeader().setComment(comment);
|
|
}
|
|
|
|
public long getCRC() throws GZIPException {
|
|
if(deflater.dstate.status != 666 /*FINISH_STATE*/)
|
|
throw new GZIPException("checksum is not calculated yet.");
|
|
return deflater.dstate.getGZIPHeader().getCRC();
|
|
}
|
|
}
|