jaroslav@694: /* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
jaroslav@694: /*
jaroslav@694: Copyright (c) 2000-2011 ymnk, JCraft,Inc. All rights reserved.
jaroslav@694: 
jaroslav@694: Redistribution and use in source and binary forms, with or without
jaroslav@694: modification, are permitted provided that the following conditions are met:
jaroslav@694: 
jaroslav@694:   1. Redistributions of source code must retain the above copyright notice,
jaroslav@694:      this list of conditions and the following disclaimer.
jaroslav@694: 
jaroslav@694:   2. Redistributions in binary form must reproduce the above copyright 
jaroslav@694:      notice, this list of conditions and the following disclaimer in 
jaroslav@694:      the documentation and/or other materials provided with the distribution.
jaroslav@694: 
jaroslav@694:   3. The names of the authors may not be used to endorse or promote products
jaroslav@694:      derived from this software without specific prior written permission.
jaroslav@694: 
jaroslav@694: THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
jaroslav@694: INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
jaroslav@694: FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
jaroslav@694: INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
jaroslav@694: INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
jaroslav@694: LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
jaroslav@694: OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
jaroslav@694: LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
jaroslav@694: NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
jaroslav@694: EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
jaroslav@694:  */
jaroslav@694: /*
jaroslav@694:  * This program is based on zlib-1.1.3, so all credit should go authors
jaroslav@694:  * Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
jaroslav@694:  * and contributors of zlib.
jaroslav@694:  */
jaroslav@694: 
jaroslav@694: package org.apidesign.bck2brwsr.emul.zip;
jaroslav@694: 
jaroslav@694: import org.apidesign.bck2brwsr.emul.lang.System;
jaroslav@694: 
jaroslav@694: /**
jaroslav@694:  * ZStream
jaroslav@694:  *
jaroslav@694:  * @deprecated  Not for public use in the future.
jaroslav@694:  */
jaroslav@694: @Deprecated
jaroslav@694: class ZStream{
jaroslav@694: 
jaroslav@694:   static final private int MAX_WBITS=15;        // 32K LZ77 window
jaroslav@694:   static final private int DEF_WBITS=MAX_WBITS;
jaroslav@694: 
jaroslav@694:   static final private int Z_NO_FLUSH=0;
jaroslav@694:   static final private int Z_PARTIAL_FLUSH=1;
jaroslav@694:   static final private int Z_SYNC_FLUSH=2;
jaroslav@694:   static final private int Z_FULL_FLUSH=3;
jaroslav@694:   static final private int Z_FINISH=4;
jaroslav@694: 
jaroslav@694:   static final private int MAX_MEM_LEVEL=9;
jaroslav@694: 
jaroslav@694:   static final private int Z_OK=0;
jaroslav@694:   static final private int Z_STREAM_END=1;
jaroslav@694:   static final private int Z_NEED_DICT=2;
jaroslav@694:   static final private int Z_ERRNO=-1;
jaroslav@694:   static final private int Z_STREAM_ERROR=-2;
jaroslav@694:   static final private int Z_DATA_ERROR=-3;
jaroslav@694:   static final private int Z_MEM_ERROR=-4;
jaroslav@694:   static final private int Z_BUF_ERROR=-5;
jaroslav@694:   static final private int Z_VERSION_ERROR=-6;
jaroslav@694: 
jaroslav@694:   public byte[] next_in;     // next input byte
jaroslav@694:   public int next_in_index;
jaroslav@694:   public int avail_in;       // number of bytes available at next_in
jaroslav@694:   public long total_in;      // total nb of input bytes read so far
jaroslav@694: 
jaroslav@694:   public byte[] next_out;    // next output byte should be put there
jaroslav@694:   public int next_out_index;
jaroslav@694:   public int avail_out;      // remaining free space at next_out
jaroslav@694:   public long total_out;     // total nb of bytes output so far
jaroslav@694: 
jaroslav@694:   public String msg;
jaroslav@694: 
jaroslav@694:   Inflate istate; 
jaroslav@694: 
jaroslav@694:   int data_type; // best guess about the data type: ascii or binary
jaroslav@694: 
jaroslav@694:   Checksum adler;
jaroslav@694: 
jaroslav@694:   public ZStream(){
jaroslav@694:     this(new Adler32());
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public ZStream(Checksum adler){
jaroslav@694:     this.adler=adler;
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public int inflateInit(){
jaroslav@694:     return inflateInit(DEF_WBITS);
jaroslav@694:   }
jaroslav@694:   public int inflateInit(boolean nowrap){
jaroslav@694:     return inflateInit(DEF_WBITS, nowrap);
jaroslav@694:   }
jaroslav@694:   public int inflateInit(int w){
jaroslav@694:     return inflateInit(w, false);
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public int inflateInit(int w, boolean nowrap){
jaroslav@694:     istate=new Inflate(this);
jaroslav@694:     return istate.inflateInit(nowrap?-w:w);
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public int inflate(int f){
jaroslav@694:     if(istate==null) return Z_STREAM_ERROR;
jaroslav@694:     return istate.inflate(f);
jaroslav@694:   }
jaroslav@694:   public int inflateEnd(){
jaroslav@694:     if(istate==null) return Z_STREAM_ERROR;
jaroslav@694:     int ret=istate.inflateEnd();
jaroslav@694: //    istate = null;
jaroslav@694:     return ret;
jaroslav@694:   }
jaroslav@694:   
jaroslav@694:   public int inflateSync(){
jaroslav@694:     if(istate == null)
jaroslav@694:       return Z_STREAM_ERROR;
jaroslav@694:     return istate.inflateSync();
jaroslav@694:   }
jaroslav@694:   public int inflateSyncPoint(){
jaroslav@694:     if(istate == null)
jaroslav@694:       return Z_STREAM_ERROR;
jaroslav@694:     return istate.inflateSyncPoint();
jaroslav@694:   }
jaroslav@694:   public int inflateSetDictionary(byte[] dictionary, int dictLength){
jaroslav@694:     if(istate == null)
jaroslav@694:       return Z_STREAM_ERROR;
jaroslav@694:     return istate.inflateSetDictionary(dictionary, dictLength);
jaroslav@694:   }
jaroslav@694:   public boolean inflateFinished(){
jaroslav@694:     return istate.mode==12 /*DONE*/;
jaroslav@694:   }
jaroslav@694: 
jaroslav@694: 
jaroslav@694:   public long getAdler(){
jaroslav@694:     return adler.getValue();
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public void free(){
jaroslav@694:     next_in=null;
jaroslav@694:     next_out=null;
jaroslav@694:     msg=null;
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public void setOutput(byte[] buf){
jaroslav@694:     setOutput(buf, 0, buf.length); 
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public void setOutput(byte[] buf, int off, int len){
jaroslav@694:     next_out = buf;
jaroslav@694:     next_out_index = off;
jaroslav@694:     avail_out = len;
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public void setInput(byte[] buf){
jaroslav@694:     setInput(buf, 0, buf.length, false); 
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public void setInput(byte[] buf, boolean append){
jaroslav@694:     setInput(buf, 0, buf.length, append); 
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public void setInput(byte[] buf, int off, int len, boolean append){
jaroslav@694:     if(len<=0 && append && next_in!=null) return;
jaroslav@694: 
jaroslav@694:     if(avail_in>0 && append){  
jaroslav@694:       byte[] tmp = new byte[avail_in+len];
jaroslav@694:       System.arraycopy(next_in, next_in_index, tmp, 0, avail_in);
jaroslav@694:       System.arraycopy(buf, off, tmp, avail_in, len);
jaroslav@694:       next_in=tmp;
jaroslav@694:       next_in_index=0;
jaroslav@694:       avail_in+=len;
jaroslav@694:     }
jaroslav@694:     else{
jaroslav@694:       next_in=buf;
jaroslav@694:       next_in_index=off;
jaroslav@694:       avail_in=len;
jaroslav@694:     }
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public byte[] getNextIn(){
jaroslav@694:     return next_in;
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public void setNextIn(byte[] next_in){
jaroslav@694:     this.next_in = next_in;
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public int getNextInIndex(){
jaroslav@694:     return next_in_index;
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public void setNextInIndex(int next_in_index){
jaroslav@694:     this.next_in_index = next_in_index;
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public int getAvailIn(){
jaroslav@694:     return avail_in;
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public void setAvailIn(int avail_in){
jaroslav@694:     this.avail_in = avail_in;
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public byte[] getNextOut(){
jaroslav@694:     return next_out;
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public void setNextOut(byte[] next_out){
jaroslav@694:     this.next_out = next_out;
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public int getNextOutIndex(){
jaroslav@694:     return next_out_index;
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public void setNextOutIndex(int next_out_index){
jaroslav@694:     this.next_out_index = next_out_index;
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public int getAvailOut(){
jaroslav@694:     return avail_out;
jaroslav@694: 
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public void setAvailOut(int avail_out){
jaroslav@694:     this.avail_out = avail_out;
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public long getTotalOut(){
jaroslav@694:     return total_out;
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public long getTotalIn(){
jaroslav@694:     return total_in;
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   public String getMessage(){
jaroslav@694:     return msg;
jaroslav@694:   }
jaroslav@694: 
jaroslav@694:   /**
jaroslav@694:    * Those methods are expected to be override by Inflater and Deflater.
jaroslav@694:    * In the future, they will become abstract methods.
jaroslav@694:    */ 
jaroslav@694:   public int end(){ return Z_OK; }
jaroslav@694:   public boolean finished(){ return false; }
jaroslav@694: }