michael@0: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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: #ifndef nsUnicharStreamLoader_h__
michael@0: #define nsUnicharStreamLoader_h__
michael@0: 
michael@0: #include "nsIChannel.h"
michael@0: #include "nsIUnicharStreamLoader.h"
michael@0: #include "nsIUnicodeDecoder.h"
michael@0: #include "nsCOMPtr.h"
michael@0: #include "nsString.h"
michael@0: 
michael@0: class nsIInputStream;
michael@0: 
michael@0: class nsUnicharStreamLoader : public nsIUnicharStreamLoader
michael@0: {
michael@0: public:
michael@0:   NS_DECL_ISUPPORTS
michael@0:   NS_DECL_NSIUNICHARSTREAMLOADER
michael@0:   NS_DECL_NSIREQUESTOBSERVER
michael@0:   NS_DECL_NSISTREAMLISTENER
michael@0: 
michael@0:   nsUnicharStreamLoader() {}
michael@0:   virtual ~nsUnicharStreamLoader() {}
michael@0: 
michael@0:   static nsresult Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
michael@0: 
michael@0: protected:
michael@0:   nsresult DetermineCharset();
michael@0: 
michael@0:   /**
michael@0:    * callback method used for ReadSegments
michael@0:    */
michael@0:   static NS_METHOD WriteSegmentFun(nsIInputStream *, void *, const char *,
michael@0:                                    uint32_t, uint32_t, uint32_t *);
michael@0: 
michael@0:   nsCOMPtr<nsIUnicharStreamLoaderObserver> mObserver;
michael@0:   nsCOMPtr<nsIUnicodeDecoder>              mDecoder;
michael@0:   nsCOMPtr<nsISupports>                    mContext;
michael@0:   nsCOMPtr<nsIChannel>                     mChannel;
michael@0:   nsCString                                mCharset;
michael@0: 
michael@0:   // This holds the first up-to-512 bytes of the raw stream.
michael@0:   // It will be passed to the OnDetermineCharset callback.
michael@0:   nsCString                                mRawData;
michael@0: 
michael@0:   // This holds the complete contents of the stream so far, after
michael@0:   // decoding to UTF-16.  It will be passed to the OnStreamComplete
michael@0:   // callback.
michael@0:   nsString                                 mBuffer;
michael@0: };
michael@0: 
michael@0: #endif // nsUnicharStreamLoader_h__