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KMIME Library

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kmime_charfreq.h
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1/* -*- c++ -*-
2 kmime_charfreq.h
3
4 KMime, the KDE Internet mail/usenet news message library.
5 Copyright (c) 2001-2002 Marc Mutz <mutz@kde.org>
6
7 This library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Library General Public
9 License as published by the Free Software Foundation; either
10 version 2 of the License, or (at your option) any later version.
11
12 This library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Library General Public License for more details.
16
17 You should have received a copy of the GNU Library General Public License
18 along with this library; see the file COPYING.LIB. If not, write to
19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA.
21*/
57#ifndef __KMIME_CHARFREQ_H__
58#define __KMIME_CHARFREQ_H__
59
60#include <QtCore/QByteArray>
61#include "kmime_export.h"
62#undef None
63
64namespace KMime {
65
78class KMIME_EXPORT CharFreq
79{
80 public:
87 explicit CharFreq( const QByteArray &buf );
88
96 CharFreq( const char *buf, size_t len );
97
101 enum Type {
102 None = 0,
103 EightBitData,
104 Binary = EightBitData,
105 SevenBitData,
106 EightBitText,
107 SevenBitText
108 };
109
113 Type type() const;
114
118 bool isEightBitData() const;
119
123 bool isEightBitText() const;
124
128 bool isSevenBitData() const;
129
133 bool isSevenBitText() const;
134
139 bool hasTrailingWhitespace() const;
140
144 bool hasLeadingFrom() const;
145
150 float printableRatio() const;
151
156 float controlCodesRatio() const;
157
158 private:
159 //@cond PRIVATE
160 uint mNUL; // count of NUL chars
161 uint mCTL; // count of CTLs (incl. DEL, excl. CR, LF, HT)
162 uint mCR; // count of CR chars
163 uint mLF; // count of LF chars
164 uint mCRLF; // count of LFs, preceded by CRs
165 uint mPrintable; // count of printable US-ASCII chars (SPC..~)
166 uint mEightBit; // count of other latin1 chars (those with 8th bit set)
167 uint mTotal; // count of all chars
168 uint mLineMin; // minimum line length
169 uint mLineMax; // maximum line length
170 bool mTrailingWS; // does the buffer contain trailing whitespace?
171 bool mLeadingFrom; // does the buffer contain lines starting with "From "?
172 //@endcond
173
180 void count( const char *buf, size_t len );
181};
182
183} // namespace KMime
184
185#endif /* __KMIME_CHARFREQ_H__ */
KMime::CharFreq
A class for performing basic data typing using frequency count heuristics.
Definition: kmime_charfreq.h:79
KMime::CharFreq::Type
Type
The different types of data.
Definition: kmime_charfreq.h:101
KMime::CharFreq::EightBitData
@ EightBitData
8bit binary
Definition: kmime_charfreq.h:103
KMime::CharFreq::SevenBitData
@ SevenBitData
7bit binary
Definition: kmime_charfreq.h:105
KMime::CharFreq::EightBitText
@ EightBitText
8bit text
Definition: kmime_charfreq.h:106
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