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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#ifndef _nsDeflateConverter_h_
#define _nsDeflateConverter_h_
#include "nsIStreamConverter.h"
#include "nsCOMPtr.h"
#include "nsIPipe.h"
#include "zlib.h"
#include "mozilla/Attributes.h"
#define DEFLATECONVERTER_CID { 0x461cd5dd, 0x73c6, 0x47a4, \
{ 0x8c, 0xc3, 0x60, 0x3b, 0x37, 0xd8, 0x4a, 0x61 } }
#define ZIP_BUFLEN (4 * 1024 - 1)
class nsDeflateConverter final : public nsIStreamConverter
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIREQUESTOBSERVER
NS_DECL_NSISTREAMLISTENER
NS_DECL_NSISTREAMCONVERTER
nsDeflateConverter()
{
// 6 is Z_DEFAULT_COMPRESSION but we need the actual value
mLevel = 6;
}
explicit nsDeflateConverter(int32_t level)
{
mLevel = level;
}
private:
~nsDeflateConverter()
{
}
enum WrapMode {
WRAP_ZLIB,
WRAP_GZIP,
WRAP_NONE
};
WrapMode mWrapMode;
uint64_t mOffset;
int32_t mLevel;
nsCOMPtr<nsIStreamListener> mListener;
nsCOMPtr<nsISupports> mContext;
z_stream mZstream;
unsigned char mWriteBuffer[ZIP_BUFLEN];
nsresult Init();
nsresult PushAvailableData(nsIRequest *aRequest, nsISupports *aContext);
};
#endif
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