source/iso646fi.cpp

   1 /* $Id$
   2
   3 This file is part of libmspstrings
   4 Copyright © 2006-2007 Mikko Rasa
   5 Distributed under the LGPL
   6 */
   7
   8 #include "iso646fi.h"
   9
  10 using namespace std;
  11
  12 namespace Msp {
  13 namespace Codecs {
  14
  15 void Iso646Fi::Encoder::encode_char(UnicodeChar ch, string &buf)
  16 {
  17         if((ch>=0 && ch<=0x5A) || ch==0x5F || (ch>=0x61 && ch<=0x7A))
  18                 buf+=ch;
  19         else if(ch==0xC4)
  20                 buf+=0x5B;
  21         else if(ch==0xC5)
  22                 buf+=0x5D;
  23         else if(ch==0xD6)
  24                 buf+=0x5C;
  25         else if(ch==0xDC)
  26                 buf+=0x5E;
  27         else if(ch==0xE4)
  28                 buf+=0x7B;
  29         else if(ch==0xE5)
  30                 buf+=0x7D;
  31         else if(ch==0xE9)
  32                 buf+=0x60;
  33         else if(ch==0xF6)
  34                 buf+=0x7C;
  35         else if(ch==0xFC)
  36                 buf+=0x7E;
  37         else
  38                 error(ch, buf, "Can't express character in ISO-646-FI");
  39 }
  40
  41 void Iso646Fi::Encoder::transliterate(UnicodeChar, string &buf)
  42 {
  43         buf+='?';
  44 }
  45
  46
  47 UnicodeChar Iso646Fi::Decoder::decode_char(const string &str, string::const_iterator &i)
  48 {
  49         if(i==str.end())
  50                 return error("No input");
  51
  52         unsigned char ch=*i;
  53         UnicodeChar result=-1;
  54         if(ch==0x5B)
  55                 result=0xC4;
  56         else if(ch==0x5C)
  57                 result=0xD6;
  58         else if(ch==0x5D)
  59                 result=0xC5;
  60         else if(ch==0x5E)
  61                 result=0xDC;
  62         else if(ch==0x60)
  63                 result=0xE9;
  64         else if(ch==0x7B)
  65                 result=0xE4;
  66         else if(ch==0x7C)
  67                 result=0xF6;
  68         else if(ch==0x7D)
  69                 result=0xE5;
  70         else if(ch==0x7E)
  71                 result=0xFC;
  72         else if(ch<=0x7F)
  73                 result=ch;
  74         else
  75                 result=error("Undefined ISO-646-FI character");
  76
  77         ++i;
  78         return result;
  79 }
  80
  81 } // namespace Codecs
  82 } // namespace Msp