gecko-dev/netwerk/streamconv/converters/nsHTTPCompressConv.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* David Dick <ddick@cpan.org>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
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*
* ***** END LICENSE BLOCK ***** */
#if !defined (__nsHTTPCompressConv__h__)
#define __nsHTTPCompressConv__h__ 1
#include "nsIStreamConverter.h"
#include "nsIStringStream.h"
#include "nsCOMPtr.h"
#include "zlib.h"
#define NS_HTTPCOMPRESSCONVERTER_CID \
{ \
/* 66230b2b-17fa-4bd3-abf4-07986151022d */ \
0x66230b2b, \
0x17fa, \
0x4bd3, \
{0xab, 0xf4, 0x07, 0x98, 0x61, 0x51, 0x02, 0x2d}\
}
#define HTTP_DEFLATE_TYPE "deflate"
#define HTTP_GZIP_TYPE "gzip"
#define HTTP_X_GZIP_TYPE "x-gzip"
#define HTTP_COMPRESS_TYPE "compress"
#define HTTP_X_COMPRESS_TYPE "x-compress"
#define HTTP_IDENTITY_TYPE "identity"
#define HTTP_UNCOMPRESSED_TYPE "uncompressed"
typedef enum {
HTTP_COMPRESS_GZIP,
HTTP_COMPRESS_DEFLATE,
HTTP_COMPRESS_COMPRESS,
HTTP_COMPRESS_IDENTITY
} CompressMode;
class nsHTTPCompressConv : public nsIStreamConverter {
public:
// nsISupports methods
NS_DECL_ISUPPORTS
NS_DECL_NSIREQUESTOBSERVER
NS_DECL_NSISTREAMLISTENER
// nsIStreamConverter methods
NS_DECL_NSISTREAMCONVERTER
nsHTTPCompressConv ();
virtual ~nsHTTPCompressConv ();
private:
nsIStreamListener *mListener; // this guy gets the converted data via his OnDataAvailable ()
CompressMode mMode;
unsigned char *mOutBuffer;
unsigned char *mInpBuffer;
PRUint32 mOutBufferLen;
PRUint32 mInpBufferLen;
nsCOMPtr<nsISupports> mAsyncConvContext;
nsCOMPtr<nsIStringInputStream> mStream;
nsresult do_OnDataAvailable (nsIRequest *request, nsISupports *aContext,
PRUint32 aSourceOffset, const char *buffer,
PRUint32 aCount);
PRBool mCheckHeaderDone;
PRBool mStreamEnded;
PRBool mStreamInitialized;
PRBool mDummyStreamInitialised;
z_stream d_stream;
unsigned mLen, hMode, mSkipCount, mFlags;
PRUint32 check_header (nsIInputStream *iStr, PRUint32 streamLen, nsresult *rv);
};
#endif