DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Implementation

Untracked file

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: NPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Netscape 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/NPL/
 *
 * 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):
 *
 *
 * 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 NPL, 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
 * the terms of any one of the NPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include "nsIConverterInputStream.h"
#include "nsString.h"

#include "nsCOMPtr.h"
#include "nsIUnicodeDecoder.h"
#include "nsIByteBuffer.h"
#include "nsIUnicharBuffer.h"

#define NS_CONVERTERINPUTSTREAM_CONTRACTID "@mozilla.org/intl/converter-input-stream;1"

// {2BC2AD62-AD5D-4b7b-A9DB-F74AE203C527}
#define NS_CONVERTERINPUTSTREAM_CID \
  { 0x2bc2ad62, 0xad5d, 0x4b7b, \
   { 0xa9, 0xdb, 0xf7, 0x4a, 0xe2, 0x3, 0xc5, 0x27 } }



class nsConverterInputStream : nsIConverterInputStream {

 public:
    NS_DECL_ISUPPORTS
    NS_IMETHOD Read(PRUnichar* aBuf,
                    PRUint32 aCount,
                    PRUint32 *aReadCount);
    NS_IMETHOD Close();
    NS_IMETHOD Init(nsIInputStream* aStream, const char *aCharset,
                    PRInt32 aBufferSize, PRBool aRecoverFromErrors);
    NS_IMETHOD ReadSegments(nsWriteUnicharSegmentFun aWriter,
                            void* aClosure,
                            PRUint32 aCount, PRUint32* aReadCount);

    nsConverterInputStream() :
        mLastErrorCode(NS_OK),
        mLeftOverBytes(0),
        mUnicharDataOffset(0),
        mUnicharDataLength(0),
        mRecoverFromErrors(PR_FALSE) { }
    
    virtual ~nsConverterInputStream() {}

 private:


    PRUint32 Fill(nsresult *aErrorCode);
    
    nsCOMPtr<nsIUnicodeDecoder> mConverter;
    nsCOMPtr<nsIByteBuffer> mByteData;
    nsCOMPtr<nsIUnicharBuffer> mUnicharData;
    nsCOMPtr<nsIInputStream> mInput;

    nsresult mLastErrorCode;
    PRUint32 mLeftOverBytes;
    PRUint32 mUnicharDataOffset;
    PRUint32 mUnicharDataLength;
    PRBool   mRecoverFromErrors;
    
};