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