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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@858 a592a061-630c-0410-9148-cb99ea01b6c8
110 lines
2.0 KiB
C++
110 lines
2.0 KiB
C++
// -*- C++ -*-
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/* This file is part of
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* ======================================================
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*
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* LyX, The Document Processor
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*
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* Copyright 1995 Matthias Ettrich
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* Copyright 1995-2000 The LyX Team.
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*
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* ====================================================== */
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#ifndef ENCODING_H
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#define ENCODING_H
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#include "LString.h"
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#include "lyxrc.h"
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typedef unsigned short int Uchar;
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class Encoding {
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public:
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///
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enum Letter_Form {
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FORM_ISOLATED,
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FORM_FINAL,
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FORM_INITIAL,
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FORM_MEDIAL
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};
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///
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Encoding(string const & l, Uchar const * e)
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: LatexName_(l) , encoding_table(e) {}
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///
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string const & LatexName() const {
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return LatexName_;
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}
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///
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Uchar ucs(unsigned char c) const {
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return encoding_table[c];
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}
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///
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static
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bool IsComposeChar_hebrew(unsigned char c);
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///
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static
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bool IsComposeChar_arabic(unsigned char c);
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///
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static
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bool is_arabic(unsigned char c);
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///
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static
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unsigned char TransformChar(unsigned char c, Letter_Form form);
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private:
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///
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string LatexName_;
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///
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Uchar const * encoding_table;
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};
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extern Encoding iso8859_1;
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extern Encoding iso8859_2;
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extern Encoding iso8859_4;
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extern Encoding iso8859_6;
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extern Encoding iso8859_7;
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extern Encoding cp1255;
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extern Encoding koi8;
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inline
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bool Encoding::IsComposeChar_hebrew(unsigned char c)
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{
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return c <= 0xd2 && c >= 0xc0 &&
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c != 0xce && c != 0xd0;
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}
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inline
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bool Encoding::IsComposeChar_arabic(unsigned char c)
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{
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return c >= 0xeb && c <= 0xf2;
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}
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extern unsigned char arabic_table[][2];
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extern unsigned char arabic_table2[][4];
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unsigned char const arabic_start = 0xc1;
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inline
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bool Encoding::is_arabic(unsigned char c)
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{
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return c >= arabic_start && arabic_table[c-arabic_start][0];
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}
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inline
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unsigned char Encoding::TransformChar(unsigned char c, Encoding::Letter_Form form)
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{
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if (!is_arabic(c))
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return c;
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if (lyxrc.font_norm == "iso10646-1")
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return arabic_table2[c-arabic_start][form];
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else
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return arabic_table[c-arabic_start][form >> 1];
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}
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#endif
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