1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/extensions/universalchardet/src/base/nsCharSetProber.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,42 @@
1.4 +/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +#ifndef nsCharSetProber_h__
1.9 +#define nsCharSetProber_h__
1.10 +
1.11 +#include "nscore.h"
1.12 +
1.13 +//#define DEBUG_chardet // Uncomment this for debug dump.
1.14 +
1.15 +typedef enum {
1.16 + eDetecting = 0, //We are still detecting, no sure answer yet, but caller can ask for confidence.
1.17 + eFoundIt = 1, //That's a positive answer
1.18 + eNotMe = 2 //Negative answer
1.19 +} nsProbingState;
1.20 +
1.21 +#define SHORTCUT_THRESHOLD (float)0.95
1.22 +
1.23 +class nsCharSetProber {
1.24 +public:
1.25 + virtual ~nsCharSetProber() {}
1.26 + virtual const char* GetCharSetName() = 0;
1.27 + virtual nsProbingState HandleData(const char* aBuf, uint32_t aLen) = 0;
1.28 + virtual nsProbingState GetState(void) = 0;
1.29 + virtual void Reset(void) = 0;
1.30 + virtual float GetConfidence(void) = 0;
1.31 +
1.32 +#ifdef DEBUG_chardet
1.33 + virtual void DumpStatus() {};
1.34 +#endif
1.35 +
1.36 + // Helper functions used in the Latin1 and Group probers.
1.37 + // both functions Allocate a new buffer for newBuf. This buffer should be
1.38 + // freed by the caller using PR_FREEIF.
1.39 + // Both functions return false in case of memory allocation failure.
1.40 + static bool FilterWithoutEnglishLetters(const char* aBuf, uint32_t aLen, char** newBuf, uint32_t& newLen);
1.41 + static bool FilterWithEnglishLetters(const char* aBuf, uint32_t aLen, char** newBuf, uint32_t& newLen);
1.42 +
1.43 +};
1.44 +
1.45 +#endif /* nsCharSetProber_h__ */
