source/windows1252.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 "windows1252.h"
   9
  10 using namespace std;
  11
  12 namespace {
  13
  14 unsigned short table[32]=
  15 {
  16         0x20AC, 0,      0x201A, 0x0192, 0x201E, 0x2026, 0x2020, 0x2021,
  17         0x02C6, 0x2030, 0x0160, 0x2039, 0x0152, 0,      0x017D, 0,
  18         0,      0x2018, 0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014,
  19         0x02DC, 0x2122, 0x0161, 0x203A, 0x0153, 0,      0x017E, 0x0178
  20 };
  21
  22 }
  23
  24 namespace Msp {
  25
  26 void Windows1252::Encoder::encode_char(wchar_t c_)
  27 {
  28         int c=c_;
  29         if((c>=0 && c<=0x7F) || (c>=0xA0 && c<=0xFF))
  30                 append(c);
  31         else
  32         {
  33                 unsigned i;
  34                 for(i=0; i<32; ++i)
  35                         if(table[i]==c)
  36                         {
  37                                 append(c);
  38                                 break;
  39                         }
  40
  41                 if(i==32)
  42                         error("Can't express character in Windows-1252");
  43         }
  44 }
  45
  46 void Windows1252::Decoder::decode_char(const string &str, string::const_iterator &i)
  47 {
  48         if(i==str.end())
  49                 return;
  50         else
  51         {
  52                 int c=static_cast<unsigned char>(*i++);
  53                 if(c>=0x80 && c<=0x9F)
  54                 {
  55                         c-=0x80;
  56                         if(table[c]==0)
  57                                 error("Invalid Windows-1252 string (undefined character)");
  58                         append(table[c]);
  59                 }
  60                 else
  61                         append(c);
  62         }
  63 }
  64
  65 } // namespace Msp