kmime_charfreq.h

/*
    kmime_charfreq.h
 
    KMime, the KDE internet mail/usenet news message library.
    Copyright (c) 2001-2002 Marc Mutz <mutz@kde.org>
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software Foundation,
    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, US
*/
#ifndef __KMIME_CHARFREQ_H__
#define __KMIME_CHARFREQ_H__
 
#include <tqcstring.h>
#include <tdemacros.h>
#undef None
 
namespace KMime {
 
class TDE_EXPORT CharFreq {
public:
  CharFreq( const TQByteArray & buf );
  CharFreq( const char * buf, size_t len );
 
  enum Type { None = 0, EightBitData, Binary = EightBitData,
          SevenBitData, EightBitText, SevenBitText };
 
  Type type() const;
  bool isEightBitData() const;
  bool isEightBitText() const;
  bool isSevenBitData() const;
  bool isSevenBitText() const;
  bool hasTrailingWhitespace() const;
  bool hasLeadingFrom() const;
  float printableRatio() const;
  float controlCodesRatio() const;
 
protected:
  uint NUL;       // count of NUL chars
  uint CTL;       // count of CTLs (incl. DEL, excl. CR, LF, HT)
  uint CR, LF;    // count of CRs and LFs
  uint CRLF;      // count of LFs, preceded by CRs
  uint printable; // count of printable US-ASCII chars (SPC..~)
  uint eightBit;  // count of other latin1 chars (those with 8th bit set)
  uint total;
  uint lineMin;
  uint lineMax;
  bool mTrailingWS;  // does the buffer contain trailing whitespace?
  bool mLeadingFrom; // does the buffer contain lines starting with "From "?
 
private:
  void count( const char * buf, size_t len );
};
 
} // namespace KMime
 
#endif /* __KMIME_CHARFREQ_H__ */