Back to index

lightning-sunbird  0.9+nobinonly
nsConverterInputStream.h
Go to the documentation of this file.
00001 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is mozilla.org code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either of the GNU General Public License Version 2 or later (the "GPL"),
00026  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
00028  * of those above. If you wish to allow use of your version of this file only
00029  * under the terms of either the GPL or the LGPL, and not to allow others to
00030  * use your version of this file under the terms of the MPL, indicate your
00031  * decision by deleting the provisions above and replace them with the notice
00032  * and other provisions required by the GPL or the LGPL. If you do not delete
00033  * the provisions above, a recipient may use your version of this file under
00034  * the terms of any one of the MPL, the GPL or the LGPL.
00035  *
00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 #include "nsIInputStream.h"
00039 #include "nsIConverterInputStream.h"
00040 #include "nsIUnicharLineInputStream.h"
00041 #include "nsString.h"
00042 #include "nsReadLine.h"
00043 
00044 #include "nsCOMPtr.h"
00045 #include "nsIUnicodeDecoder.h"
00046 #include "nsIByteBuffer.h"
00047 #include "nsIUnicharBuffer.h"
00048 
00049 #define NS_CONVERTERINPUTSTREAM_CONTRACTID "@mozilla.org/intl/converter-input-stream;1"
00050 
00051 // {2BC2AD62-AD5D-4b7b-A9DB-F74AE203C527}
00052 #define NS_CONVERTERINPUTSTREAM_CID \
00053   { 0x2bc2ad62, 0xad5d, 0x4b7b, \
00054    { 0xa9, 0xdb, 0xf7, 0x4a, 0xe2, 0x3, 0xc5, 0x27 } }
00055 
00056 
00057 
00058 class nsConverterInputStream : public nsIConverterInputStream,
00059                                public nsIUnicharLineInputStream {
00060 
00061  public:
00062     NS_DECL_ISUPPORTS
00063     NS_DECL_NSIUNICHARINPUTSTREAM
00064     NS_DECL_NSIUNICHARLINEINPUTSTREAM
00065     NS_DECL_NSICONVERTERINPUTSTREAM
00066 
00067     nsConverterInputStream() :
00068         mLastErrorCode(NS_OK),
00069         mLeftOverBytes(0),
00070         mUnicharDataOffset(0),
00071         mUnicharDataLength(0),
00072         mReplacementChar(DEFAULT_REPLACEMENT_CHARACTER),
00073         mLineBuffer(nsnull) { }
00074     
00075     virtual ~nsConverterInputStream() { Close(); }
00076 
00077  private:
00078 
00079 
00080     PRUint32 Fill(nsresult *aErrorCode);
00081     
00082     nsCOMPtr<nsIUnicodeDecoder> mConverter;
00083     nsCOMPtr<nsIByteBuffer> mByteData;
00084     nsCOMPtr<nsIUnicharBuffer> mUnicharData;
00085     nsCOMPtr<nsIInputStream> mInput;
00086 
00087     nsresult  mLastErrorCode;
00088     PRUint32  mLeftOverBytes;
00089     PRUint32  mUnicharDataOffset;
00090     PRUint32  mUnicharDataLength;
00091     PRUnichar mReplacementChar;
00092 
00093     nsLineBuffer<PRUnichar>* mLineBuffer;    
00094 };