src/encoding.h

   1 // -*- C++ -*-
   2 /**
   3  * \file encoding.h
   4  * This file is part of LyX, the document processor.
   5  * Licence details can be found in the file COPYING.
   6  *
   7  * \author Lars Gullik Bjønnes
   8  * \author Jean-Marc Lasgouttes
   9  *
  10  * Full author contact details are available in file CREDITS.
  11  */
  12
  13 #ifndef ENCODING_H
  14 #define ENCODING_H
  15
  16 #include <map>
  17 #include <string>
  18
  19
  20 ///
  21 typedef unsigned short int Uchar;
  22
  23 ///
  24 class Encoding {
  25 public:
  26         ///
  27         Encoding() {}
  28         ///
  29         Encoding(std::string const & n, std::string const & l, Uchar const * e)
  30                 : Name_(n), LatexName_(l) {
  31                 for (int i = 0; i < 256; ++i)
  32                         encoding_table[i] = e[i];
  33         }
  34         ///
  35         std::string const & Name() const {
  36                 return Name_;
  37         }
  38         ///
  39         std::string const & LatexName() const {
  40                 return LatexName_;
  41         }
  42         ///
  43         Uchar ucs(unsigned char c) const {
  44                 return encoding_table[c];
  45         }
  46 private:
  47         ///
  48         std::string Name_;
  49         ///
  50         std::string LatexName_;
  51         ///
  52         Uchar encoding_table[256];
  53 };
  54
  55 extern Encoding symbol_encoding;
  56
  57 class Encodings {
  58 public:
  59         ///
  60         typedef std::map<std::string, Encoding> EncodingList;
  61         ///
  62         Encodings();
  63         ///
  64         void read(std::string const & filename);
  65         ///
  66         Encoding const * getEncoding(std::string const & encoding) const;
  67         ///
  68         Encoding const * symbol_encoding() {
  69                 return &symbol_encoding_;
  70         }
  71
  72         ///
  73         enum Letter_Form {
  74                 ///
  75                 FORM_ISOLATED,
  76                 ///
  77                 FORM_FINAL,
  78                 ///
  79                 FORM_INITIAL,
  80                 ///
  81                 FORM_MEDIAL
  82         };
  83         ///
  84         static
  85         bool IsComposeChar_hebrew(unsigned char c);
  86         ///
  87         static
  88         bool IsComposeChar_arabic(unsigned char c);
  89         ///
  90         static
  91         bool is_arabic_special(unsigned char c);
  92         ///
  93         static
  94         bool is_arabic(unsigned char c);
  95         ///
  96         static
  97         unsigned char TransformChar(unsigned char c, Letter_Form form);
  98
  99 private:
 100         ///
 101         EncodingList encodinglist;
 102         ///
 103         Encoding symbol_encoding_;
 104 };
 105
 106 extern Encodings encodings;
 107
 108 #endif