/* -*-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.*;
/**
* ZInputStream
*
* @deprecated use DeflaterOutputStream or InflaterInputStream
*/
@
Deprecated
public class
ZInputStream extends
FilterInputStream {
protected int
flush=
JZlib.
Z_NO_FLUSH;
protected boolean
compress;
protected
InputStream in=null;
protected
Deflater deflater;
protected
InflaterInputStream iis;
public
ZInputStream(
InputStream in) throws
IOException {
this(
in, false);
}
public
ZInputStream(
InputStream in, boolean
nowrap) throws
IOException {
super(
in);
iis = new
InflaterInputStream(
in,
nowrap);
compress=false;
}
public
ZInputStream(
InputStream in, int
level) throws
IOException {
super(
in);
this.
in=
in;
deflater = new
Deflater();
deflater.
init(
level);
compress=true;
}
private byte[]
buf1 = new byte[1];
public int
read() throws
IOException {
if(
read(
buf1, 0, 1)==-1) return -1;
return(
buf1[0]&0xFF);
}
private byte[]
buf = new byte[512];
public int
read(byte[]
b, int
off, int
len) throws
IOException {
if(
compress){
deflater.
setOutput(
b,
off,
len);
while(true){
int
datalen =
in.
read(
buf, 0,
buf.length);
if(
datalen == -1) return -1;
deflater.
setInput(
buf, 0,
datalen, true);
int
err =
deflater.
deflate(
flush);
if(
deflater.
next_out_index>0)
return
deflater.
next_out_index;
if(
err ==
JZlib.
Z_STREAM_END)
return 0;
if(
err ==
JZlib.
Z_STREAM_ERROR ||
err ==
JZlib.
Z_DATA_ERROR){
throw new
ZStreamException("deflating: "+
deflater.
msg);
}
}
}
else{
return
iis.
read(
b,
off,
len);
}
}
public long
skip(long
n) throws
IOException {
int
len=512;
if(
n<
len)
len=(int)
n;
byte[]
tmp=new byte[
len];
return((long)
read(
tmp));
}
public int
getFlushMode() {
return
flush;
}
public void
setFlushMode(int
flush) {
this.
flush=
flush;
}
public long
getTotalIn() {
if(
compress) return
deflater.
total_in;
else return
iis.
getTotalIn();
}
public long
getTotalOut() {
if(
compress) return
deflater.
total_out;
else return
iis.
getTotalOut();
}
public void
close() throws
IOException{
if(
compress)
deflater.
end();
else
iis.
close();
}
}