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Diffstat (limited to 'src/ext/libcharsetdetect/mozilla/extensions/universalchardet/src/base/nsCharSetProber.h')
-rw-r--r-- | src/ext/libcharsetdetect/mozilla/extensions/universalchardet/src/base/nsCharSetProber.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/src/ext/libcharsetdetect/mozilla/extensions/universalchardet/src/base/nsCharSetProber.h b/src/ext/libcharsetdetect/mozilla/extensions/universalchardet/src/base/nsCharSetProber.h new file mode 100644 index 0000000..436928a --- /dev/null +++ b/src/ext/libcharsetdetect/mozilla/extensions/universalchardet/src/base/nsCharSetProber.h @@ -0,0 +1,78 @@ +/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla 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/MPL/ + * + * 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 Universal charset detector code. + * + * The Initial Developer of the Original Code is + * Netscape Communications Corporation. + * Portions created by the Initial Developer are Copyright (C) 2001 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * Shy Shalom <shooshX@gmail.com> + * + * 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 MPL, 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 MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ +#ifndef nsCharSetProber_h__ +#define nsCharSetProber_h__ + +#include "nscore.h" + +//#define DEBUG_chardet // Uncomment this for debug dump. + +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 const char* GetLangName() {return "";}; + virtual PRBool KeepEnglishLetters() {return PR_TRUE;} + virtual nsProbingState HandleData(const char* aBuf, PRUint32 aLen) = 0; + virtual nsProbingState GetState(void) = 0; + virtual void Reset(void) = 0; + virtual float GetConfidence(void) = 0; + virtual void SetOpion() = 0; + +#ifdef DEBUG_chardet + 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 PR_FALSE in case of memory allocation failure. + static PRBool FilterWithoutEnglishLetters(const char* aBuf, PRUint32 aLen, char** newBuf, PRUint32& newLen); + static PRBool FilterWithEnglishLetters(const char* aBuf, PRUint32 aLen, char** newBuf, PRUint32& newLen); + +}; + +#endif /* nsCharSetProber_h__ */ |