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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* -*- C++ -*-
* Copyright (C) 1998 <developer@mozilla.org>
*
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef nsCharSetProber_h__
#define nsCharSetProber_h__
#include "qencodingprober.h"
namespace qencodingprober {
typedef enum {
eDetecting = 0, //We are still detecting, no sure answer yet, but caller can ask for confidence.
eFoundIt = 1, //That's a positive answer
eNotMe = 2 //Negative answer
} nsProbingState;
#define SHORTCUT_THRESHOLD (float)0.95
class nsCharSetProber {
public:
virtual ~nsCharSetProber() {};
virtual const char* GetCharSetName() = 0;
virtual nsProbingState HandleData(const char* aBuf, unsigned int aLen) = 0;
virtual nsProbingState GetState(void) = 0;
virtual void Reset(void) = 0;
virtual float GetConfidence(void) = 0;
virtual void SetOpion() = 0;
#ifdef DEBUG_PROBE
virtual void DumpStatus() {};
#endif
// Helper functions used in the Latin1 and Group probers.
// both functions Allocate a new buffer for newBuf. This buffer should be
// freed by the caller using PR_FREEIF.
// Both functions return false in case of memory allocation failure.
static bool FilterWithoutEnglishLetters(const char* aBuf, unsigned int aLen, char** newBuf, unsigned int& newLen);
static bool FilterWithEnglishLetters(const char* aBuf, unsigned int aLen, char** newBuf, unsigned int& newLen);
};
}
#endif /* nsCharSetProber_h__ */
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