/* -*-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();
}
}