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using System;
using System.IO;
namespace Org.BouncyCastle.Utilities.Zlib {
/// <summary>
/// Summary description for DeflaterOutputStream.
/// </summary>
[Obsolete("Use 'ZInputStream' instead")]
public class ZInflaterInputStream : Stream {
protected ZStream z=new ZStream();
protected int flushLevel=JZlib.Z_NO_FLUSH;
private const int BUFSIZE = 4192;
protected byte[] buf=new byte[BUFSIZE];
private byte[] buf1=new byte[1];
protected Stream inp=null;
private bool nomoreinput=false;
public ZInflaterInputStream(Stream inp) : this(inp, false) {
}
public ZInflaterInputStream(Stream inp, bool nowrap) {
this.inp=inp;
z.inflateInit(nowrap);
z.next_in=buf;
z.next_in_index=0;
z.avail_in=0;
}
public override bool CanRead {
get {
// TODO: Add DeflaterOutputStream.CanRead getter implementation
return true;
}
}
public override bool CanSeek {
get {
// TODO: Add DeflaterOutputStream.CanSeek getter implementation
return false;
}
}
public override bool CanWrite {
get {
// TODO: Add DeflaterOutputStream.CanWrite getter implementation
return false;
}
}
public override long Length {
get {
// TODO: Add DeflaterOutputStream.Length getter implementation
return 0;
}
}
public override long Position {
get {
// TODO: Add DeflaterOutputStream.Position getter implementation
return 0;
}
set {
// TODO: Add DeflaterOutputStream.Position setter implementation
}
}
public override void Write(byte[] b, int off, int len) {
}
public override long Seek(long offset, SeekOrigin origin) {
// TODO: Add DeflaterOutputStream.Seek implementation
return 0;
}
public override void SetLength(long value) {
// TODO: Add DeflaterOutputStream.SetLength implementation
}
public override int Read(byte[] b, int off, int len) {
if(len==0)
return(0);
int err;
z.next_out=b;
z.next_out_index=off;
z.avail_out=len;
do {
if((z.avail_in==0)&&(!nomoreinput)) { // if buffer is empty and more input is avaiable, refill it
z.next_in_index=0;
z.avail_in=inp.Read(buf, 0, BUFSIZE);//(BUFSIZE<z.avail_out ? BUFSIZE : z.avail_out));
if(z.avail_in<=0) {
z.avail_in=0;
nomoreinput=true;
}
}
err=z.inflate(flushLevel);
if(nomoreinput&&(err==JZlib.Z_BUF_ERROR))
return(0);
if(err!=JZlib.Z_OK && err!=JZlib.Z_STREAM_END)
throw new IOException("inflating: "+z.msg);
if((nomoreinput||err==JZlib.Z_STREAM_END)&&(z.avail_out==len))
return(0);
}
while(z.avail_out==len&&err==JZlib.Z_OK);
//System.err.print("("+(len-z.avail_out)+")");
return(len-z.avail_out);
}
public override void Flush() {
inp.Flush();
}
public override void WriteByte(byte b) {
}
public override void Close() {
inp.Close();
}
public override int ReadByte() {
if(Read(buf1, 0, 1)<=0)
return -1;
return(buf1[0]&0xFF);
}
}
}
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