michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #if !defined (__nsHTTPCompressConv__h__)
michael@0: #define	__nsHTTPCompressConv__h__	1
michael@0: 
michael@0: #include "nsIStreamConverter.h"
michael@0: #include "nsCOMPtr.h"
michael@0: 
michael@0: #include "zlib.h"
michael@0: 
michael@0: class nsIStringInputStream;
michael@0: 
michael@0: #define NS_HTTPCOMPRESSCONVERTER_CID                \
michael@0: {                                                   \
michael@0:     /* 66230b2b-17fa-4bd3-abf4-07986151022d */      \
michael@0:     0x66230b2b,                                     \
michael@0:     0x17fa,                                         \
michael@0:     0x4bd3,                                         \
michael@0:     {0xab, 0xf4, 0x07, 0x98, 0x61, 0x51, 0x02, 0x2d}\
michael@0: }
michael@0: 
michael@0: 
michael@0: #define	HTTP_DEFLATE_TYPE		"deflate"
michael@0: #define	HTTP_GZIP_TYPE	        "gzip"
michael@0: #define	HTTP_X_GZIP_TYPE	    "x-gzip"
michael@0: #define	HTTP_COMPRESS_TYPE	    "compress"
michael@0: #define	HTTP_X_COMPRESS_TYPE	"x-compress"
michael@0: #define	HTTP_IDENTITY_TYPE	    "identity"
michael@0: #define	HTTP_UNCOMPRESSED_TYPE	"uncompressed"
michael@0: 
michael@0: typedef enum    {
michael@0:         HTTP_COMPRESS_GZIP,
michael@0:         HTTP_COMPRESS_DEFLATE,
michael@0:         HTTP_COMPRESS_COMPRESS,
michael@0:         HTTP_COMPRESS_IDENTITY
michael@0:     }   CompressMode;
michael@0: 
michael@0: class nsHTTPCompressConv	: public nsIStreamConverter	{
michael@0: public:
michael@0:     // nsISupports methods
michael@0:     NS_DECL_THREADSAFE_ISUPPORTS
michael@0: 
michael@0: 	NS_DECL_NSIREQUESTOBSERVER
michael@0:     NS_DECL_NSISTREAMLISTENER
michael@0: 
michael@0:     // nsIStreamConverter methods
michael@0:     NS_DECL_NSISTREAMCONVERTER
michael@0: 
michael@0: 
michael@0:     nsHTTPCompressConv ();
michael@0:     virtual ~nsHTTPCompressConv ();
michael@0: 
michael@0: private:
michael@0: 
michael@0:     nsIStreamListener   *mListener; // this guy gets the converted data via his OnDataAvailable ()
michael@0: 	CompressMode        mMode;
michael@0: 
michael@0:     unsigned char *mOutBuffer;
michael@0:     unsigned char *mInpBuffer;
michael@0: 
michael@0:     uint32_t	mOutBufferLen;
michael@0:     uint32_t	mInpBufferLen;
michael@0: 	
michael@0:     nsCOMPtr<nsISupports>   mAsyncConvContext;
michael@0:     nsCOMPtr<nsIStringInputStream>  mStream;
michael@0: 
michael@0:     nsresult do_OnDataAvailable (nsIRequest *request, nsISupports *aContext,
michael@0:                                  uint64_t aSourceOffset, const char *buffer,
michael@0:                                  uint32_t aCount);
michael@0: 
michael@0:     bool        mCheckHeaderDone;
michael@0:     bool        mStreamEnded;
michael@0:     bool        mStreamInitialized;
michael@0:     bool        mDummyStreamInitialised;
michael@0: 
michael@0:     z_stream d_stream;
michael@0:     unsigned mLen, hMode, mSkipCount, mFlags;
michael@0: 
michael@0:     uint32_t check_header (nsIInputStream *iStr, uint32_t streamLen, nsresult *rv);
michael@0: };
michael@0: 
michael@0: 
michael@0: #endif