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lightning-sunbird  0.9+nobinonly
nsDebugDetector.cpp
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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  *   Pierre Phaneuf <pp@ludusdesign.com>
00024  *
00025  * Alternatively, the contents of this file may be used under the terms of
00026  * either of the GNU General Public License Version 2 or later (the "GPL"),
00027  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00028  * in which case the provisions of the GPL or the LGPL are applicable instead
00029  * of those above. If you wish to allow use of your version of this file only
00030  * under the terms of either the GPL or the LGPL, and not to allow others to
00031  * use your version of this file under the terms of the MPL, indicate your
00032  * decision by deleting the provisions above and replace them with the notice
00033  * and other provisions required by the GPL or the LGPL. If you do not delete
00034  * the provisions above, a recipient may use your version of this file under
00035  * the terms of any one of the MPL, the GPL or the LGPL.
00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 
00039 #include "nsDebugDetector.h"
00040 #include "pratom.h"
00041 #include "nsCharDetDll.h"
00042 
00043 
00044 #define REPORT_CHARSET "ISO-8859-7"
00045 #define REPORT_CONFIDENT  eSureAnswer
00046 
00047 //--------------------------------------------------------------------
00048 nsDebugDetector::nsDebugDetector( nsDebugDetectorSel aSel)
00049 {
00050   mSel = aSel;
00051   mBlks = 0;
00052   mObserver = nsnull;
00053   mStop = PR_FALSE;
00054 }
00055 //--------------------------------------------------------------------
00056 nsDebugDetector::~nsDebugDetector()
00057 {
00058 }
00059 //--------------------------------------------------------------------
00060 NS_IMETHODIMP nsDebugDetector::Init(nsICharsetDetectionObserver* aObserver)
00061 {
00062   NS_ASSERTION(mObserver == nsnull , "Init twice");
00063   if(nsnull == aObserver)
00064      return NS_ERROR_ILLEGAL_VALUE;
00065 
00066   mObserver = aObserver;
00067   return NS_OK;
00068 }
00069 //--------------------------------------------------------------------
00070 
00071 NS_IMETHODIMP nsDebugDetector::DoIt(const char* aBytesArray, PRUint32 aLen, PRBool* oDontFeedMe)
00072 {
00073   NS_ASSERTION(mObserver != nsnull , "have not init yet");
00074   NS_ASSERTION(mStop == PR_FALSE , "don't call DoIt if we return PR_TRUE in oDontFeedMe");
00075 
00076   if((nsnull == aBytesArray) || (nsnull == oDontFeedMe))
00077      return NS_ERROR_ILLEGAL_VALUE;
00078 
00079   mBlks++;
00080   if((k1stBlk == mSel) && (1 == mBlks)) {
00081      *oDontFeedMe = mStop = PR_TRUE;
00082      Report();
00083   } else if((k2ndBlk == mSel) && (2 == mBlks)) {
00084      *oDontFeedMe = mStop = PR_TRUE;
00085      Report();
00086   } else {
00087      *oDontFeedMe = mStop = PR_FALSE;
00088   }
00089    
00090   return NS_OK;
00091 }
00092 
00093 //--------------------------------------------------------------------
00094 NS_IMETHODIMP nsDebugDetector::Done()
00095 {
00096   NS_ASSERTION(mObserver != nsnull , "have not init yet");
00097   if(klastBlk == mSel)
00098      Report();
00099   return NS_OK;
00100 }
00101 //--------------------------------------------------------------------
00102 void nsDebugDetector::Report()
00103 {
00104   mObserver->Notify( REPORT_CHARSET, REPORT_CONFIDENT);
00105 }
00106 
00107 
00108 NS_IMPL_ISUPPORTS1(nsDebugDetector, nsICharsetDetector)
00109