/* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
/*
Copyright (c) 2000-2011 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.
*/
/*
* This program is based on zlib-1.1.3, so all credit should go authors
* Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
* and contributors of zlib.
*/
package com.jcraft.jzlib;
/**
* ZStream
*
* @deprecated Not for public use in the future.
*/
@
Deprecated
public class
ZStream{
static final private int
MAX_WBITS=15; // 32K LZ77 window
static final private int
DEF_WBITS=
MAX_WBITS;
static final private int
Z_NO_FLUSH=0;
static final private int
Z_PARTIAL_FLUSH=1;
static final private int
Z_SYNC_FLUSH=2;
static final private int
Z_FULL_FLUSH=3;
static final private int
Z_FINISH=4;
static final private int
MAX_MEM_LEVEL=9;
static final private int
Z_OK=0;
static final private int
Z_STREAM_END=1;
static final private int
Z_NEED_DICT=2;
static final private int
Z_ERRNO=-1;
static final private int
Z_STREAM_ERROR=-2;
static final private int
Z_DATA_ERROR=-3;
static final private int
Z_MEM_ERROR=-4;
static final private int
Z_BUF_ERROR=-5;
static final private int
Z_VERSION_ERROR=-6;
public byte[]
next_in; // next input byte
public int
next_in_index;
public int
avail_in; // number of bytes available at next_in
public long
total_in; // total nb of input bytes read so far
public byte[]
next_out; // next output byte should be put there
public int
next_out_index;
public int
avail_out; // remaining free space at next_out
public long
total_out; // total nb of bytes output so far
public
String msg;
Deflate dstate;
Inflate istate;
int
data_type; // best guess about the data type: ascii or binary
Checksum adler;
public
ZStream(){
this(new
Adler32());
}
public
ZStream(
Checksum adler){
this.
adler=
adler;
}
public int
inflateInit(){
return
inflateInit(
DEF_WBITS);
}
public int
inflateInit(boolean
nowrap){
return
inflateInit(
DEF_WBITS,
nowrap);
}
public int
inflateInit(int
w){
return
inflateInit(
w, false);
}
public int
inflateInit(
JZlib.
WrapperType wrapperType) {
return
inflateInit(
DEF_WBITS,
wrapperType);
}
public int
inflateInit(int
w,
JZlib.
WrapperType wrapperType) {
boolean
nowrap = false;
if(
wrapperType ==
JZlib.
W_NONE){
nowrap = true;
}
else if(
wrapperType ==
JZlib.
W_GZIP) {
w += 16;
}
else if(
wrapperType ==
JZlib.
W_ANY) {
w |=
Inflate.
INFLATE_ANY;
}
else if(
wrapperType ==
JZlib.
W_ZLIB) {
}
return
inflateInit(
w,
nowrap);
}
public int
inflateInit(int
w, boolean
nowrap){
istate=new
Inflate(this);
return
istate.
inflateInit(
nowrap?-
w:
w);
}
public int
inflate(int
f){
if(
istate==null) return
Z_STREAM_ERROR;
return
istate.
inflate(
f);
}
public int
inflateEnd(){
if(
istate==null) return
Z_STREAM_ERROR;
int
ret=
istate.
inflateEnd();
// istate = null;
return
ret;
}
public int
inflateSync(){
if(
istate == null)
return
Z_STREAM_ERROR;
return
istate.
inflateSync();
}
public int
inflateSyncPoint(){
if(
istate == null)
return
Z_STREAM_ERROR;
return
istate.
inflateSyncPoint();
}
public int
inflateSetDictionary(byte[]
dictionary, int
dictLength){
if(
istate == null)
return
Z_STREAM_ERROR;
return
istate.
inflateSetDictionary(
dictionary,
dictLength);
}
public boolean
inflateFinished(){
return
istate.
mode==12 /*DONE*/;
}
public int
deflateInit(int
level){
return
deflateInit(
level,
MAX_WBITS);
}
public int
deflateInit(int
level, boolean
nowrap){
return
deflateInit(
level,
MAX_WBITS,
nowrap);
}
public int
deflateInit(int
level, int
bits){
return
deflateInit(
level,
bits, false);
}
public int
deflateInit(int
level, int
bits, int
memlevel,
JZlib.
WrapperType wrapperType){
if(
bits < 9 ||
bits > 15){
return
Z_STREAM_ERROR;
}
if(
wrapperType ==
JZlib.
W_NONE) {
bits *= -1;
}
else if(
wrapperType ==
JZlib.
W_GZIP) {
bits += 16;
}
else if(
wrapperType ==
JZlib.
W_ANY) {
return
Z_STREAM_ERROR;
}
else if(
wrapperType ==
JZlib.
W_ZLIB) {
}
return this.
deflateInit(
level,
bits,
memlevel);
}
public int
deflateInit(int
level, int
bits, int
memlevel){
dstate=new
Deflate(this);
return
dstate.
deflateInit(
level,
bits,
memlevel);
}
public int
deflateInit(int
level, int
bits, boolean
nowrap){
dstate=new
Deflate(this);
return
dstate.
deflateInit(
level,
nowrap?-
bits:
bits);
}
public int
deflate(int
flush){
if(
dstate==null){
return
Z_STREAM_ERROR;
}
return
dstate.
deflate(
flush);
}
public int
deflateEnd(){
if(
dstate==null) return
Z_STREAM_ERROR;
int
ret=
dstate.
deflateEnd();
dstate=null;
return
ret;
}
public int
deflateParams(int
level, int
strategy){
if(
dstate==null) return
Z_STREAM_ERROR;
return
dstate.
deflateParams(
level,
strategy);
}
public int
deflateSetDictionary (byte[]
dictionary, int
dictLength){
if(
dstate == null)
return
Z_STREAM_ERROR;
return
dstate.
deflateSetDictionary(
dictionary,
dictLength);
}
// Flush as much pending output as possible. All deflate() output goes
// through this function so some applications may wish to modify it
// to avoid allocating a large strm->next_out buffer and copying into it.
// (See also read_buf()).
void
flush_pending(){
int
len=
dstate.
pending;
if(
len>
avail_out)
len=
avail_out;
if(
len==0) return;
if(
dstate.
pending_buf.length<=
dstate.
pending_out ||
next_out.length<=
next_out_index ||
dstate.
pending_buf.length<(
dstate.
pending_out+
len) ||
next_out.length<(
next_out_index+
len)){
//System.out.println(dstate.pending_buf.length+", "+dstate.pending_out+
// ", "+next_out.length+", "+next_out_index+", "+len);
//System.out.println("avail_out="+avail_out);
}
System.
arraycopy(
dstate.
pending_buf,
dstate.
pending_out,
next_out,
next_out_index,
len);
next_out_index+=
len;
dstate.
pending_out+=
len;
total_out+=
len;
avail_out-=
len;
dstate.
pending-=
len;
if(
dstate.
pending==0){
dstate.
pending_out=0;
}
}
// Read a new buffer from the current input stream, update the adler32
// and total number of bytes read. All deflate() input goes through
// this function so some applications may wish to modify it to avoid
// allocating a large strm->next_in buffer and copying from it.
// (See also flush_pending()).
int
read_buf(byte[]
buf, int
start, int
size) {
int
len=
avail_in;
if(
len>
size)
len=
size;
if(
len==0) return 0;
avail_in-=
len;
if(
dstate.
wrap!=0) {
adler.
update(
next_in,
next_in_index,
len);
}
System.
arraycopy(
next_in,
next_in_index,
buf,
start,
len);
next_in_index +=
len;
total_in +=
len;
return
len;
}
public long
getAdler(){
return
adler.
getValue();
}
public void
free(){
next_in=null;
next_out=null;
msg=null;
}
public void
setOutput(byte[]
buf){
setOutput(
buf, 0,
buf.length);
}
public void
setOutput(byte[]
buf, int
off, int
len){
next_out =
buf;
next_out_index =
off;
avail_out =
len;
}
public void
setInput(byte[]
buf){
setInput(
buf, 0,
buf.length, false);
}
public void
setInput(byte[]
buf, boolean
append){
setInput(
buf, 0,
buf.length,
append);
}
public void
setInput(byte[]
buf, int
off, int
len, boolean
append){
if(
len<=0 &&
append &&
next_in!=null) return;
if(
avail_in>0 &&
append){
byte[]
tmp = new byte[
avail_in+
len];
System.
arraycopy(
next_in,
next_in_index,
tmp, 0,
avail_in);
System.
arraycopy(
buf,
off,
tmp,
avail_in,
len);
next_in=
tmp;
next_in_index=0;
avail_in+=
len;
}
else{
next_in=
buf;
next_in_index=
off;
avail_in=
len;
}
}
public byte[]
getNextIn(){
return
next_in;
}
public void
setNextIn(byte[]
next_in){
this.
next_in =
next_in;
}
public int
getNextInIndex(){
return
next_in_index;
}
public void
setNextInIndex(int
next_in_index){
this.
next_in_index =
next_in_index;
}
public int
getAvailIn(){
return
avail_in;
}
public void
setAvailIn(int
avail_in){
this.
avail_in =
avail_in;
}
public byte[]
getNextOut(){
return
next_out;
}
public void
setNextOut(byte[]
next_out){
this.
next_out =
next_out;
}
public int
getNextOutIndex(){
return
next_out_index;
}
public void
setNextOutIndex(int
next_out_index){
this.
next_out_index =
next_out_index;
}
public int
getAvailOut(){
return
avail_out;
}
public void
setAvailOut(int
avail_out){
this.
avail_out =
avail_out;
}
public long
getTotalOut(){
return
total_out;
}
public long
getTotalIn(){
return
total_in;
}
public
String getMessage(){
return
msg;
}
/**
* Those methods are expected to be override by Inflater and Deflater.
* In the future, they will become abstract methods.
*/
public int
end(){ return
Z_OK; }
public boolean
finished(){ return false; }
}