intl/chardet/src/nsDebugDetector.cpp

   1 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
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  15  * The Original Code is mozilla.org code.
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  17  * The Initial Developer of the Original Code is
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  19  * Portions created by the Initial Developer are Copyright (C) 1998
  20  * the Initial Developer. All Rights Reserved.
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  22  * Contributor(s):
  23  *   Pierre Phaneuf <pp@ludusdesign.com>
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  25  * Alternatively, the contents of this file may be used under the terms of
  26  * either of the GNU General Public License Version 2 or later (the "GPL"),
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  37  * ***** END LICENSE BLOCK ***** */
  38
  39 #include "nsDebugDetector.h"
  40 #include "pratom.h"
  41 #include "nsCharDetDll.h"
  42
  43
  44 #define REPORT_CHARSET "ISO-8859-7"
  45 #define REPORT_CONFIDENT  eSureAnswer
  46
  47 //--------------------------------------------------------------------
  48 nsDebugDetector::nsDebugDetector( nsDebugDetectorSel aSel)
  49 {
  50   mSel = aSel;
  51   mBlks = 0;
  52   mObserver = nsnull;
  53   mStop = PR_FALSE;
  54 }
  55 //--------------------------------------------------------------------
  56 nsDebugDetector::~nsDebugDetector()
  57 {
  58 }
  59 //--------------------------------------------------------------------
  60 NS_IMETHODIMP nsDebugDetector::Init(nsICharsetDetectionObserver* aObserver)
  61 {
  62   NS_ASSERTION(mObserver == nsnull , "Init twice");
  63   if(nsnull == aObserver)
  64      return NS_ERROR_ILLEGAL_VALUE;
  65
  66   mObserver = aObserver;
  67   return NS_OK;
  68 }
  69 //--------------------------------------------------------------------
  70
  71 NS_IMETHODIMP nsDebugDetector::DoIt(const char* aBytesArray, PRUint32 aLen, PRBool* oDontFeedMe)
  72 {
  73   NS_ASSERTION(mObserver != nsnull , "have not init yet");
  74   NS_ASSERTION(mStop == PR_FALSE , "don't call DoIt if we return PR_TRUE in oDontFeedMe");
  75
  76   if((nsnull == aBytesArray) || (nsnull == oDontFeedMe))
  77      return NS_ERROR_ILLEGAL_VALUE;
  78
  79   mBlks++;
  80   if((k1stBlk == mSel) && (1 == mBlks)) {
  81      *oDontFeedMe = mStop = PR_TRUE;
  82      Report();
  83   } else if((k2ndBlk == mSel) && (2 == mBlks)) {
  84      *oDontFeedMe = mStop = PR_TRUE;
  85      Report();
  86   } else {
  87      *oDontFeedMe = mStop = PR_FALSE;
  88   }
  89
  90   return NS_OK;
  91 }
  92
  93 //--------------------------------------------------------------------
  94 NS_IMETHODIMP nsDebugDetector::Done()
  95 {
  96   NS_ASSERTION(mObserver != nsnull , "have not init yet");
  97   if(klastBlk == mSel)
  98      Report();
  99   return NS_OK;
 100 }
 101 //--------------------------------------------------------------------
 102 void nsDebugDetector::Report()
 103 {
 104   mObserver->Notify( REPORT_CHARSET, REPORT_CONFIDENT);
 105 }
 106
 107
 108 NS_IMPL_ISUPPORTS1(nsDebugDetector, nsICharsetDetector)
 109