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using System;
using System.IO;
namespace Org.BouncyCastle.Utilities.Zlib {
/// <summary>
/// Summary description for DeflaterOutputStream.
/// </summary>
[Obsolete("Use 'ZOutputStream' instead")]
public class ZDeflaterOutputStream : 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 outp;
public ZDeflaterOutputStream(Stream outp) : this(outp, 6, false) {
}
public ZDeflaterOutputStream(Stream outp, int level) : this(outp, level, false) {
}
public ZDeflaterOutputStream(Stream outp, int level, bool nowrap) {
this.outp=outp;
z.deflateInit(level, nowrap);
}
public override bool CanRead {
get {
// TODO: Add DeflaterOutputStream.CanRead getter implementation
return false;
}
}
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 true;
}
}
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) {
if(len==0)
return;
int err;
z.next_in=b;
z.next_in_index=off;
z.avail_in=len;
do{
z.next_out=buf;
z.next_out_index=0;
z.avail_out=BUFSIZE;
err=z.deflate(flushLevel);
if(err!=JZlib.Z_OK)
throw new IOException("deflating: "+z.msg);
if (z.avail_out < BUFSIZE)
{
outp.Write(buf, 0, BUFSIZE-z.avail_out);
}
}
while(z.avail_in>0 || z.avail_out==0);
}
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[] buffer, int offset, int count) {
// TODO: Add DeflaterOutputStream.Read implementation
return 0;
}
public override void Flush() {
outp.Flush();
}
public override void WriteByte(byte b) {
buf1[0]=(byte)b;
Write(buf1, 0, 1);
}
public void Finish() {
int err;
do{
z.next_out=buf;
z.next_out_index=0;
z.avail_out=BUFSIZE;
err=z.deflate(JZlib.Z_FINISH);
if(err!=JZlib.Z_STREAM_END && err != JZlib.Z_OK)
throw new IOException("deflating: "+z.msg);
if(BUFSIZE-z.avail_out>0){
outp.Write(buf, 0, BUFSIZE-z.avail_out);
}
}
while(z.avail_in>0 || z.avail_out==0);
Flush();
}
public void End() {
if(z==null)
return;
z.deflateEnd();
z.free();
z=null;
}
#if PORTABLE
protected override void Dispose(bool disposing)
{
if (disposing)
{
try{
try{Finish();}
catch (IOException) {}
}
finally{
End();
Platform.Dispose(outp);
outp=null;
}
}
base.Dispose(disposing);
}
#else
public override void Close() {
try{
try{Finish();}
catch (IOException) {}
}
finally{
End();
Platform.Dispose(outp);
outp=null;
}
}
#endif
}
}
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