127 lines
3.7 KiB
Java
127 lines
3.7 KiB
Java
/* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
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/*
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Copyright (c) 2011 ymnk, JCraft,Inc. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the distribution.
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3. The names of the authors may not be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
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INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package com.jcraft.jzlib;
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import java.io.*;
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/**
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* ZInputStream
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*
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* @deprecated use DeflaterOutputStream or InflaterInputStream
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*/
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@Deprecated
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public class ZInputStream extends FilterInputStream {
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protected int flush=JZlib.Z_NO_FLUSH;
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protected boolean compress;
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protected InputStream in=null;
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protected Deflater deflater;
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protected InflaterInputStream iis;
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public ZInputStream(InputStream in) throws IOException {
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this(in, false);
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}
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public ZInputStream(InputStream in, boolean nowrap) throws IOException {
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super(in);
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iis = new InflaterInputStream(in, nowrap);
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compress=false;
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}
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public ZInputStream(InputStream in, int level) throws IOException {
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super(in);
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this.in=in;
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deflater = new Deflater();
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deflater.init(level);
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compress=true;
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}
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private byte[] buf1 = new byte[1];
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public int read() throws IOException {
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if(read(buf1, 0, 1)==-1) return -1;
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return(buf1[0]&0xFF);
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}
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private byte[] buf = new byte[512];
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public int read(byte[] b, int off, int len) throws IOException {
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if(compress){
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deflater.setOutput(b, off, len);
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while(true){
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int datalen = in.read(buf, 0, buf.length);
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if(datalen == -1) return -1;
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deflater.setInput(buf, 0, datalen, true);
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int err = deflater.deflate(flush);
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if(deflater.next_out_index>0)
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return deflater.next_out_index;
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if(err == JZlib.Z_STREAM_END)
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return 0;
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if(err == JZlib.Z_STREAM_ERROR ||
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err == JZlib.Z_DATA_ERROR){
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throw new ZStreamException("deflating: "+deflater.msg);
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}
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}
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}
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else{
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return iis.read(b, off, len);
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}
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}
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public long skip(long n) throws IOException {
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int len=512;
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if(n<len)
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len=(int)n;
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byte[] tmp=new byte[len];
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return((long)read(tmp));
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}
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public int getFlushMode() {
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return flush;
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}
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public void setFlushMode(int flush) {
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this.flush=flush;
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}
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public long getTotalIn() {
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if(compress) return deflater.total_in;
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else return iis.getTotalIn();
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}
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public long getTotalOut() {
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if(compress) return deflater.total_out;
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else return iis.getTotalOut();
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}
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public void close() throws IOException{
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if(compress) deflater.end();
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else iis.close();
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}
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}
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