UTF8Utils.cpp

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// Portions of this file based on utf/detail/utf8_algo.hpp
//
//  Copyright (c) 2003 Alberto Barbati
//
//  Permission to copy, use, modify, sell and distribute this software
//  is granted provided this copyright notice appears in all copies.
//  This software is provided "as is" without express or implied
//  warranty, and with no claim as to its suitability for any purpose.
#include "blocxx/BLOCXX_config.h"
#include "blocxx/UTF8Utils.hpp"
#include "blocxx/String.hpp"
#include "blocxx/Assertion.hpp"
#include "blocxx/Array.hpp"
#include "blocxx/Format.hpp"
#include "blocxx/ExceptionIds.hpp"

#include <string.h> // for strlen
#include <algorithm> // for std::lower_bound

namespace BLOCXX_NAMESPACE
{

BLOCXX_DEFINE_EXCEPTION_WITH_ID(InvalidUTF8);

namespace UTF8Utils
{
namespace {
/*
   UTF-8 sequence length table.
   This table gives the sequence length according to the value of the
   sequence leading character.
   Notice: this table is different from the one found in the official
   UTF-8 conversion program, found here
   http://www.unicode.org/Public/PROGRAMS/CVTUTF/
   This table encodes only the sequence lenghts of UTF-8 sequences
   that can encode (or possibly encode) a Unicode character according
   to Unicode 3.2 requirements.
   In particular:
   - lines from 0x80 to 0xb0 (inclusive) contains "0" because those
   values do not represent a valid leading character
   - line 0xc0 begins with two "0" because values 0xc0 and 0xc1 lead
   non-shortest sequences, that are illegal since Unicode 3.1
   - line 0xf0 has only five "4" instead of eight and lacks values
   "5" and "6" because values above 0xf4 lead sequences that cannot
   encode a Unicode character.
*/
UInt8 SequenceLengthTable[256] =
{
   /* 0x00 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x0f */
   /* 0x10 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x1f */
   /* 0x20 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x2f */
   /* 0x30 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x3f */
   /* 0x40 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x4f */
   /* 0x50 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x5f */
   /* 0x60 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x6f */
   /* 0x70 */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x7f */
   /* 0x80 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x8f */
   /* 0x90 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x9f */
   /* 0xa0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xaf */
   /* 0xb0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xbf */
   /* 0xc0 */ 0, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* 0xcf */
   /* 0xd0 */ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* 0xdf */
   /* 0xe0 */ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* 0xef */
   /* 0xf0 */ 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0  /* 0xff */
};
} // end unnamed namespace
size_t charCount(const char* utf8str)
{
   BLOCXX_ASSERT(utf8str != 0);
   const char* p = utf8str;
   size_t count = 0;
   while (*p)
   {
      // any chars 0x80-0xBF are extension bytes.  Anything else signals a new char
      UInt8 c = static_cast<UInt8>(*p);
      if (c < 0x80 || c > 0xBF)
      {
         ++count;
      }
      ++p;
   }
   return count;
}
UInt16 UTF8toUCS2(const char* utf8char)
{
   UInt32 c = UTF8toUCS4(utf8char);
   if (c > 0xFFFF)
   {
      return 0xFFFF;
   }
   else
   {
      return static_cast<UInt16>(c);
   }
}
String UCS2toUTF8(UInt16 ucs2char)
{
   // UCS2 and UCS4 are the same, only different sizes.
   return UCS4toUTF8(ucs2char);
}
UInt32 UTF8toUCS4(const char* utf8char)
{
   BLOCXX_ASSERT(utf8char != 0);
   BLOCXX_ASSERT(utf8char[0] != '\0');
   const char* p = utf8char;
   const UInt32 c0 = static_cast<UInt8>(p[0]);
   const UInt32 bad = 0xFFFFFFFF;
   switch (SequenceLengthTable[c0])
   {
      case 1:
      {
         return c0;
      }
      case 2:
      {
         // check for short (invalid) utf8 sequence
         if (p[1] == '\0')
         {
            return bad;
         }
         const UInt32 c1 = static_cast<UInt8>(p[1]);
         return ((c0 & 0x1fu) << 6) | (c1 & 0x3fu);
      }
      case 3:
      {
         // check for short (invalid) utf8 sequence
         if (p[1] == '\0' || p[2] == '\0')
         {
            return bad;
         }
         const UInt32 c1 = static_cast<UInt8>(p[1]);
         const UInt32 c2 = static_cast<UInt8>(p[2]);
         return ((c0 & 0x0fu) << 12) | ((c1 & 0x3fu) << 6) | (c2 & 0x3fu);
      }
      case 4:
      {
         // check for short (invalid) utf8 sequence
         if (p[1] == '\0' || p[2] == '\0' || p[3] == '\0')
         {
            return bad;
         }
         
         const UInt32 c1 = static_cast<UInt8>(p[1]);
         const UInt32 c2 = static_cast<UInt8>(p[2]);
         const UInt32 c3 = static_cast<UInt8>(p[3]);
         
         return ((c0 & 0x03u) << 18) | ((c1 & 0x3fu) << 12) | ((c2 & 0x3fu) << 6) | (c3 & 0x3fu);
      }
      default:
      {
         // invalid, just skip it
         break;
      }
   }
   return bad;
}

String UCS4toUTF8(UInt32 ucs4char)
{
   StringBuffer sb(5); // max 4 chars + null
   UCS4toUTF8(ucs4char, sb);
   return sb.releaseString();
}

void UCS4toUTF8(UInt32 ucs4char, StringBuffer& sb)
{
   if (ucs4char < 0x80u)
   {
      // one byte
      sb += static_cast<char>(static_cast<UInt8>(ucs4char));
   }
   else if (ucs4char < 0x800u)
   {
      sb += static_cast<char>(static_cast<UInt8>(0xc0u | (ucs4char >> 6)));
      sb += static_cast<char>(static_cast<UInt8>(0x80u | (ucs4char & 0x3fu)));
   }
   else if (ucs4char < 0x10000u)
   {
      sb += static_cast<char>(static_cast<UInt8>(0xe0u | (ucs4char >> 12)));
      sb += static_cast<char>(static_cast<UInt8>(0x80u | ((ucs4char >> 6) & 0x3fu)));
      sb += static_cast<char>(static_cast<UInt8>(0x80u | (ucs4char & 0x3fu)));
   }
   else
   {
      sb += static_cast<char>(static_cast<UInt8>(0xf0u | (ucs4char >> 18)));
      sb += static_cast<char>(static_cast<UInt8>(0x80u | ((ucs4char >> 12) & 0x3fu)));
      sb += static_cast<char>(static_cast<UInt8>(0x80u | ((ucs4char >> 6) & 0x3fu)));
      sb += static_cast<char>(static_cast<UInt8>(0x80u | (ucs4char & 0x3fu)));
   }
}

namespace
{
void UCS4toUTF8(UInt32 ucs4char, char* p)
{
   if (ucs4char < 0x80u)
   {
      // one byte
      p[0] = static_cast<char>(static_cast<UInt8>(ucs4char));
   }
   else if (ucs4char < 0x800u)
   {
      p[0] = static_cast<char>(static_cast<UInt8>(0xc0u | (ucs4char >> 6)));
      p[1] = static_cast<char>(static_cast<UInt8>(0x80u | (ucs4char & 0x3fu)));
   }
   else if (ucs4char < 0x10000u)
   {
      p[0] = static_cast<char>(static_cast<UInt8>(0xe0u | (ucs4char >> 12)));
      p[1] = static_cast<char>(static_cast<UInt8>(0x80u | ((ucs4char >> 6) & 0x3fu)));
      p[2] = static_cast<char>(static_cast<UInt8>(0x80u | (ucs4char & 0x3fu)));
   }
   else
   {
      p[0] = static_cast<char>(static_cast<UInt8>(0xf0u | (ucs4char >> 18)));
      p[1] = static_cast<char>(static_cast<UInt8>(0x80u | ((ucs4char >> 12) & 0x3fu)));
      p[2] = static_cast<char>(static_cast<UInt8>(0x80u | ((ucs4char >> 6) & 0x3fu)));
      p[3] = static_cast<char>(static_cast<UInt8>(0x80u | (ucs4char & 0x3fu)));
   }
}

Array<UInt16> StringToUCS2Common(const String& input, bool throwException)
{
   // TODO: Remove the duplication between this function and UTF8toUCS2()
   Array<UInt16> rval;
   BLOCXX_ASSERT(input.length() == ::strlen(input.c_str()));
   const UInt16 UCS2ReplacementChar = 0xFFFD;
   const char* begin = input.c_str();
   const char* end = begin + input.length();

   const char* p = begin;
   while (p < end)
   {
      const UInt32 c0 = static_cast<UInt8>(p[0]);
      switch (SequenceLengthTable[c0])
      {
         case 1:
         {
            rval.push_back(c0);
            ++p;
         }
         break;
         case 2:
         {
            // check for short (invalid) utf8 sequence
            if (p[1] == '\0')
            {
               if (throwException)
               {
                  BLOCXX_THROW(InvalidUTF8Exception, Format("Length: %1, input = %2, p = %3", 
                     static_cast<int>(SequenceLengthTable[c0]), input.c_str(), p).c_str());
               }
               else
               {
                  rval.push_back(UCS2ReplacementChar);
                  p += 2;
               }
            }
            const UInt32 c1 = static_cast<UInt8>(p[1]);
            rval.push_back(((c0 & 0x1fu) << 6) | (c1 & 0x3fu));
            p += 2;
         }
         break;
         case 3:
         {
            // check for short (invalid) utf8 sequence
            if (p[1] == '\0' || p[2] == '\0')
            {
               if (throwException)
               {
                  BLOCXX_THROW(InvalidUTF8Exception, Format("Length: %1, input = %2, p = %3", 
                     static_cast<int>(SequenceLengthTable[c0]), input.c_str(), p).c_str());
               }
               else
               {
                  rval.push_back(UCS2ReplacementChar);
                  p += 3;
               }

            }
            const UInt32 c1 = static_cast<UInt8>(p[1]);
            const UInt32 c2 = static_cast<UInt8>(p[2]);
            rval.push_back(((c0 & 0x0fu) << 12) | ((c1 & 0x3fu) << 6) | (c2 & 0x3fu));
            p += 3;
         }
         break;
         case 4:
         {
            // UCS2 can't hold a value this big
            if (throwException)
            {
               BLOCXX_THROW(InvalidUTF8Exception, Format("Length: %1, input = %2, p = %3", 
                  static_cast<int>(SequenceLengthTable[c0]), input.c_str(), p).c_str());
            }
            else
            {
               rval.push_back(UCS2ReplacementChar);
               p += 4;
            }

         }
         break;
         default:
         {
            if (throwException)
            {
               BLOCXX_THROW(InvalidUTF8Exception, Format("Length: %1, input = %2, p = %3", 
                  static_cast<int>(SequenceLengthTable[c0]), input.c_str(), p).c_str());
            }
            else
            {
               rval.push_back(UCS2ReplacementChar);
               ++p;
            }
         }
      }
   }
   return rval;
}

} // end anonymous namespace

Array<UInt16> StringToUCS2ReplaceInvalid(const String& input)
{
   return StringToUCS2Common(input, false);
}

Array<UInt16> StringToUCS2(const String& input)
{
   return StringToUCS2Common(input, true);
}

String UCS2ToString(const void* input, size_t inputLength)
{
   // start out with 1 byte/char in input, this is just big enough for a
   // standard ASCII string.  If any chars are bigger, we'll only incur 1 or
   // 2 (worse case) reallocations of the buffer.
   size_t numchars = inputLength/2;
   StringBuffer sb(numchars + 1);
   for (size_t i = 0; i < numchars; ++i)
   {
      UCS4toUTF8(reinterpret_cast<const UInt16*>(input)[i], sb);
   }
   return sb.releaseString();
}

String UCS2ToString(const Array<UInt16>& input)
{
   if (input.empty())
   {
      return String();
   }
   return UCS2ToString(&input[0], input.size() * sizeof(UInt16));
}
String UCS2ToString(const Array<char>& input)
{
   if (input.empty())
   {
      return String();
   }
   return UCS2ToString(&input[0], input.size());
}

namespace
{

int UTF8CharLen(UInt32 ucs4char)
{
   if (ucs4char < 0x80u)
   {
      return 1;
   }
   else if (ucs4char < 0x800u)
   {
      return 2;
   }
   else if (ucs4char < 0x10000u)
   {
      return 3;
   }
   else
   {
      return 4;
   }
}

template <typename TransformT>
bool transformInPlace(char* input, TransformT transformer)
{
   char* p = input;
   char* output = input;
   while (*p)
   {
      UInt32 ucs4char = UTF8toUCS4(p);
      if (ucs4char == 0xFFFFFFFF)
      {
         ++p;
         ++output;
         continue;
      }
      UInt32 newUcs4Char = transformer(ucs4char);

      const UInt32 c0 = static_cast<UInt8>(p[0]);
      int prevCharLen = SequenceLengthTable[c0];
      int newCharLen = UTF8CharLen(newUcs4Char);
      
      // can't grow the string, only shrink it. This can't happen with valid UTF8, but with invalid stuff it could.
      if (p > output)
      {
         return false;
      }

      // This is commented out, because, given the current set of data from Unicode 4.0.1, there are no
      // chars that grow when either upper or lower-cased.
      //if ((p + prevCharLen) < (output + newCharLen))
      //{
      // return false;
      //}
      UCS4toUTF8(newUcs4Char, output);
      p += prevCharLen;
      output += newCharLen;
   }
   *output = '\0'; // null terminate in case the string shrunk
   return true;
}

template <typename TransformT>
String transform(const char* input, TransformT transformer)
{
   StringBuffer rval(strlen(input));
   const char* p = input;
   while (*p)
   {
      UInt32 ucs4char = UTF8toUCS4(p);
      if (ucs4char == 0xFFFFFFFF)
      {
         rval += *p;
         ++p;
         continue;
      }

      UTF8Utils::UCS4toUTF8(transformer(ucs4char), rval);

      const UInt32 c0 = static_cast<UInt8>(p[0]);
      int prevCharLen = SequenceLengthTable[c0];
      p += prevCharLen;
   }
   return rval.releaseString();
}

// These mappings were generated by GenCaseMappings.cpp with UnicodeData.txt
// from unicode 4.0.1 and downloaded from http://www.unicode.org/Public/UNIDATA/
// Don't modify it by hand, re-run the generator if something needs to change.
struct CaseMapping
{
   UInt32 codePoint;
   UInt32 mapping;
};
const CaseMapping lowerMappings[] =
{
   {0x41, 0x61},
   {0x42, 0x62},
   {0x43, 0x63},
   {0x44, 0x64},
   {0x45, 0x65},
   {0x46, 0x66},
   {0x47, 0x67},
   {0x48, 0x68},
   {0x49, 0x69},
   {0x4a, 0x6a},
   {0x4b, 0x6b},
   {0x4c, 0x6c},
   {0x4d, 0x6d},
   {0x4e, 0x6e},
   {0x4f, 0x6f},
   {0x50, 0x70},
   {0x51, 0x71},
   {0x52, 0x72},
   {0x53, 0x73},
   {0x54, 0x74},
   {0x55, 0x75},
   {0x56, 0x76},
   {0x57, 0x77},
   {0x58, 0x78},
   {0x59, 0x79},
   {0x5a, 0x7a},
   {0xc0, 0xe0},
   {0xc1, 0xe1},
   {0xc2, 0xe2},
   {0xc3, 0xe3},
   {0xc4, 0xe4},
   {0xc5, 0xe5},
   {0xc6, 0xe6},
   {0xc7, 0xe7},
   {0xc8, 0xe8},
   {0xc9, 0xe9},
   {0xca, 0xea},
   {0xcb, 0xeb},
   {0xcc, 0xec},
   {0xcd, 0xed},
   {0xce, 0xee},
   {0xcf, 0xef},
   {0xd0, 0xf0},
   {0xd1, 0xf1},
   {0xd2, 0xf2},
   {0xd3, 0xf3},
   {0xd4, 0xf4},
   {0xd5, 0xf5},
   {0xd6, 0xf6},
   {0xd8, 0xf8},
   {0xd9, 0xf9},
   {0xda, 0xfa},
   {0xdb, 0xfb},
   {0xdc, 0xfc},
   {0xdd, 0xfd},
   {0xde, 0xfe},
   {0x100, 0x101},
   {0x102, 0x103},
   {0x104, 0x105},
   {0x106, 0x107},
   {0x108, 0x109},
   {0x10a, 0x10b},
   {0x10c, 0x10d},
   {0x10e, 0x10f},
   {0x110, 0x111},
   {0x112, 0x113},
   {0x114, 0x115},
   {0x116, 0x117},
   {0x118, 0x119},
   {0x11a, 0x11b},
   {0x11c, 0x11d},
   {0x11e, 0x11f},
   {0x120, 0x121},
   {0x122, 0x123},
   {0x124, 0x125},
   {0x126, 0x127},
   {0x128, 0x129},
   {0x12a, 0x12b},
   {0x12c, 0x12d},
   {0x12e, 0x12f},
   {0x130, 0x69},
   {0x132, 0x133},
   {0x134, 0x135},
   {0x136, 0x137},
   {0x139, 0x13a},
   {0x13b, 0x13c},
   {0x13d, 0x13e},
   {0x13f, 0x140},
   {0x141, 0x142},
   {0x143, 0x144},
   {0x145, 0x146},
   {0x147, 0x148},
   {0x14a, 0x14b},
   {0x14c, 0x14d},
   {0x14e, 0x14f},
   {0x150, 0x151},
   {0x152, 0x153},
   {0x154, 0x155},
   {0x156, 0x157},
   {0x158, 0x159},
   {0x15a, 0x15b},
   {0x15c, 0x15d},
   {0x15e, 0x15f},
   {0x160, 0x161},
   {0x162, 0x163},
   {0x164, 0x165},
   {0x166, 0x167},
   {0x168, 0x169},
   {0x16a, 0x16b},
   {0x16c, 0x16d},
   {0x16e, 0x16f},
   {0x170, 0x171},
   {0x172, 0x173},
   {0x174, 0x175},
   {0x176, 0x177},
   {0x178, 0xff},
   {0x179, 0x17a},
   {0x17b, 0x17c},
   {0x17d, 0x17e},
   {0x181, 0x253},
   {0x182, 0x183},
   {0x184, 0x185},
   {0x186, 0x254},
   {0x187, 0x188},
   {0x189, 0x256},
   {0x18a, 0x257},
   {0x18b, 0x18c},
   {0x18e, 0x1dd},
   {0x18f, 0x259},
   {0x190, 0x25b},
   {0x191, 0x192},
   {0x193, 0x260},
   {0x194, 0x263},
   {0x196, 0x269},
   {0x197, 0x268},
   {0x198, 0x199},
   {0x19c, 0x26f},
   {0x19d, 0x272},
   {0x19f, 0x275},
   {0x1a0, 0x1a1},
   {0x1a2, 0x1a3},
   {0x1a4, 0x1a5},
   {0x1a6, 0x280},
   {0x1a7, 0x1a8},
   {0x1a9, 0x283},
   {0x1ac, 0x1ad},
   {0x1ae, 0x288},
   {0x1af, 0x1b0},
   {0x1b1, 0x28a},
   {0x1b2, 0x28b},
   {0x1b3, 0x1b4},
   {0x1b5, 0x1b6},
   {0x1b7, 0x292},
   {0x1b8, 0x1b9},
   {0x1bc, 0x1bd},
   {0x1c4, 0x1c6},
   {0x1c5, 0x1c6},
   {0x1c7, 0x1c9},
   {0x1c8, 0x1c9},
   {0x1ca, 0x1cc},
   {0x1cb, 0x1cc},
   {0x1cd, 0x1ce},
   {0x1cf, 0x1d0},
   {0x1d1, 0x1d2},
   {0x1d3, 0x1d4},
   {0x1d5, 0x1d6},
   {0x1d7, 0x1d8},
   {0x1d9, 0x1da},
   {0x1db, 0x1dc},
   {0x1de, 0x1df},
   {0x1e0, 0x1e1},
   {0x1e2, 0x1e3},
   {0x1e4, 0x1e5},
   {0x1e6, 0x1e7},
   {0x1e8, 0x1e9},
   {0x1ea, 0x1eb},
   {0x1ec, 0x1ed},
   {0x1ee, 0x1ef},
   {0x1f1, 0x1f3},
   {0x1f2, 0x1f3},
   {0x1f4, 0x1f5},
   {0x1f6, 0x195},
   {0x1f7, 0x1bf},
   {0x1f8, 0x1f9},
   {0x1fa, 0x1fb},
   {0x1fc, 0x1fd},
   {0x1fe, 0x1ff},
   {0x200, 0x201},
   {0x202, 0x203},
   {0x204, 0x205},
   {0x206, 0x207},
   {0x208, 0x209},
   {0x20a, 0x20b},
   {0x20c, 0x20d},
   {0x20e, 0x20f},
   {0x210, 0x211},
   {0x212, 0x213},
   {0x214, 0x215},
   {0x216, 0x217},
   {0x218, 0x219},
   {0x21a, 0x21b},
   {0x21c, 0x21d},
   {0x21e, 0x21f},
   {0x220, 0x19e},
   {0x222, 0x223},
   {0x224, 0x225},
   {0x226, 0x227},
   {0x228, 0x229},
   {0x22a, 0x22b},
   {0x22c, 0x22d},
   {0x22e, 0x22f},
   {0x230, 0x231},
   {0x232, 0x233},
   {0x386, 0x3ac},
   {0x388, 0x3ad},
   {0x389, 0x3ae},
   {0x38a, 0x3af},
   {0x38c, 0x3cc},
   {0x38e, 0x3cd},
   {0x38f, 0x3ce},
   {0x391, 0x3b1},
   {0x392, 0x3b2},
   {0x393, 0x3b3},
   {0x394, 0x3b4},
   {0x395, 0x3b5},
   {0x396, 0x3b6},
   {0x397, 0x3b7},
   {0x398, 0x3b8},
   {0x399, 0x3b9},
   {0x39a, 0x3ba},
   {0x39b, 0x3bb},
   {0x39c, 0x3bc},
   {0x39d, 0x3bd},
   {0x39e, 0x3be},
   {0x39f, 0x3bf},
   {0x3a0, 0x3c0},
   {0x3a1, 0x3c1},
   {0x3a3, 0x3c3},
   {0x3a4, 0x3c4},
   {0x3a5, 0x3c5},
   {0x3a6, 0x3c6},
   {0x3a7, 0x3c7},
   {0x3a8, 0x3c8},
   {0x3a9, 0x3c9},
   {0x3aa, 0x3ca},
   {0x3ab, 0x3cb},
   {0x3d8, 0x3d9},
   {0x3da, 0x3db},
   {0x3dc, 0x3dd},
   {0x3de, 0x3df},
   {0x3e0, 0x3e1},
   {0x3e2, 0x3e3},
   {0x3e4, 0x3e5},
   {0x3e6, 0x3e7},
   {0x3e8, 0x3e9},
   {0x3ea, 0x3eb},
   {0x3ec, 0x3ed},
   {0x3ee, 0x3ef},
   {0x3f4, 0x3b8},
   {0x3f7, 0x3f8},
   {0x3f9, 0x3f2},
   {0x3fa, 0x3fb},
   {0x400, 0x450},
   {0x401, 0x451},
   {0x402, 0x452},
   {0x403, 0x453},
   {0x404, 0x454},
   {0x405, 0x455},
   {0x406, 0x456},
   {0x407, 0x457},
   {0x408, 0x458},
   {0x409, 0x459},
   {0x40a, 0x45a},
   {0x40b, 0x45b},
   {0x40c, 0x45c},
   {0x40d, 0x45d},
   {0x40e, 0x45e},
   {0x40f, 0x45f},
   {0x410, 0x430},
   {0x411, 0x431},
   {0x412, 0x432},
   {0x413, 0x433},
   {0x414, 0x434},
   {0x415, 0x435},
   {0x416, 0x436},
   {0x417, 0x437},
   {0x418, 0x438},
   {0x419, 0x439},
   {0x41a, 0x43a},
   {0x41b, 0x43b},
   {0x41c, 0x43c},
   {0x41d, 0x43d},
   {0x41e, 0x43e},
   {0x41f, 0x43f},
   {0x420, 0x440},
   {0x421, 0x441},
   {0x422, 0x442},
   {0x423, 0x443},
   {0x424, 0x444},
   {0x425, 0x445},
   {0x426, 0x446},
   {0x427, 0x447},
   {0x428, 0x448},
   {0x429, 0x449},
   {0x42a, 0x44a},
   {0x42b, 0x44b},
   {0x42c, 0x44c},
   {0x42d, 0x44d},
   {0x42e, 0x44e},
   {0x42f, 0x44f},
   {0x460, 0x461},
   {0x462, 0x463},
   {0x464, 0x465},
   {0x466, 0x467},
   {0x468, 0x469},
   {0x46a, 0x46b},
   {0x46c, 0x46d},
   {0x46e, 0x46f},
   {0x470, 0x471},
   {0x472, 0x473},
   {0x474, 0x475},
   {0x476, 0x477},
   {0x478, 0x479},
   {0x47a, 0x47b},
   {0x47c, 0x47d},
   {0x47e, 0x47f},
   {0x480, 0x481},
   {0x48a, 0x48b},
   {0x48c, 0x48d},
   {0x48e, 0x48f},
   {0x490, 0x491},
   {0x492, 0x493},
   {0x494, 0x495},
   {0x496, 0x497},
   {0x498, 0x499},
   {0x49a, 0x49b},
   {0x49c, 0x49d},
   {0x49e, 0x49f},
   {0x4a0, 0x4a1},
   {0x4a2, 0x4a3},
   {0x4a4, 0x4a5},
   {0x4a6, 0x4a7},
   {0x4a8, 0x4a9},
   {0x4aa, 0x4ab},
   {0x4ac, 0x4ad},
   {0x4ae, 0x4af},
   {0x4b0, 0x4b1},
   {0x4b2, 0x4b3},
   {0x4b4, 0x4b5},
   {0x4b6, 0x4b7},
   {0x4b8, 0x4b9},
   {0x4ba, 0x4bb},
   {0x4bc, 0x4bd},
   {0x4be, 0x4bf},
   {0x4c1, 0x4c2},
   {0x4c3, 0x4c4},
   {0x4c5, 0x4c6},
   {0x4c7, 0x4c8},
   {0x4c9, 0x4ca},
   {0x4cb, 0x4cc},
   {0x4cd, 0x4ce},
   {0x4d0, 0x4d1},
   {0x4d2, 0x4d3},
   {0x4d4, 0x4d5},
   {0x4d6, 0x4d7},
   {0x4d8, 0x4d9},
   {0x4da, 0x4db},
   {0x4dc, 0x4dd},
   {0x4de, 0x4df},
   {0x4e0, 0x4e1},
   {0x4e2, 0x4e3},
   {0x4e4, 0x4e5},
   {0x4e6, 0x4e7},
   {0x4e8, 0x4e9},
   {0x4ea, 0x4eb},
   {0x4ec, 0x4ed},
   {0x4ee, 0x4ef},
   {0x4f0, 0x4f1},
   {0x4f2, 0x4f3},
   {0x4f4, 0x4f5},
   {0x4f8, 0x4f9},
   {0x500, 0x501},
   {0x502, 0x503},
   {0x504, 0x505},
   {0x506, 0x507},
   {0x508, 0x509},
   {0x50a, 0x50b},
   {0x50c, 0x50d},
   {0x50e, 0x50f},
   {0x531, 0x561},
   {0x532, 0x562},
   {0x533, 0x563},
   {0x534, 0x564},
   {0x535, 0x565},
   {0x536, 0x566},
   {0x537, 0x567},
   {0x538, 0x568},
   {0x539, 0x569},
   {0x53a, 0x56a},
   {0x53b, 0x56b},
   {0x53c, 0x56c},
   {0x53d, 0x56d},
   {0x53e, 0x56e},
   {0x53f, 0x56f},
   {0x540, 0x570},
   {0x541, 0x571},
   {0x542, 0x572},
   {0x543, 0x573},
   {0x544, 0x574},
   {0x545, 0x575},
   {0x546, 0x576},
   {0x547, 0x577},
   {0x548, 0x578},
   {0x549, 0x579},
   {0x54a, 0x57a},
   {0x54b, 0x57b},
   {0x54c, 0x57c},
   {0x54d, 0x57d},
   {0x54e, 0x57e},
   {0x54f, 0x57f},
   {0x550, 0x580},
   {0x551, 0x581},
   {0x552, 0x582},
   {0x553, 0x583},
   {0x554, 0x584},
   {0x555, 0x585},
   {0x556, 0x586},
   {0x1e00, 0x1e01},
   {0x1e02, 0x1e03},
   {0x1e04, 0x1e05},
   {0x1e06, 0x1e07},
   {0x1e08, 0x1e09},
   {0x1e0a, 0x1e0b},
   {0x1e0c, 0x1e0d},
   {0x1e0e, 0x1e0f},
   {0x1e10, 0x1e11},
   {0x1e12, 0x1e13},
   {0x1e14, 0x1e15},
   {0x1e16, 0x1e17},
   {0x1e18, 0x1e19},
   {0x1e1a, 0x1e1b},
   {0x1e1c, 0x1e1d},
   {0x1e1e, 0x1e1f},
   {0x1e20, 0x1e21},
   {0x1e22, 0x1e23},
   {0x1e24, 0x1e25},
   {0x1e26, 0x1e27},
   {0x1e28, 0x1e29},
   {0x1e2a, 0x1e2b},
   {0x1e2c, 0x1e2d},
   {0x1e2e, 0x1e2f},
   {0x1e30, 0x1e31},
   {0x1e32, 0x1e33},
   {0x1e34, 0x1e35},
   {0x1e36, 0x1e37},
   {0x1e38, 0x1e39},
   {0x1e3a, 0x1e3b},
   {0x1e3c, 0x1e3d},
   {0x1e3e, 0x1e3f},
   {0x1e40, 0x1e41},
   {0x1e42, 0x1e43},
   {0x1e44, 0x1e45},
   {0x1e46, 0x1e47},
   {0x1e48, 0x1e49},
   {0x1e4a, 0x1e4b},
   {0x1e4c, 0x1e4d},
   {0x1e4e, 0x1e4f},
   {0x1e50, 0x1e51},
   {0x1e52, 0x1e53},
   {0x1e54, 0x1e55},
   {0x1e56, 0x1e57},
   {0x1e58, 0x1e59},
   {0x1e5a, 0x1e5b},
   {0x1e5c, 0x1e5d},
   {0x1e5e, 0x1e5f},
   {0x1e60, 0x1e61},
   {0x1e62, 0x1e63},
   {0x1e64, 0x1e65},
   {0x1e66, 0x1e67},
   {0x1e68, 0x1e69},
   {0x1e6a, 0x1e6b},
   {0x1e6c, 0x1e6d},
   {0x1e6e, 0x1e6f},
   {0x1e70, 0x1e71},
   {0x1e72, 0x1e73},
   {0x1e74, 0x1e75},
   {0x1e76, 0x1e77},
   {0x1e78, 0x1e79},
   {0x1e7a, 0x1e7b},
   {0x1e7c, 0x1e7d},
   {0x1e7e, 0x1e7f},
   {0x1e80, 0x1e81},
   {0x1e82, 0x1e83},
   {0x1e84, 0x1e85},
   {0x1e86, 0x1e87},
   {0x1e88, 0x1e89},
   {0x1e8a, 0x1e8b},
   {0x1e8c, 0x1e8d},
   {0x1e8e, 0x1e8f},
   {0x1e90, 0x1e91},
   {0x1e92, 0x1e93},
   {0x1e94, 0x1e95},
   {0x1ea0, 0x1ea1},
   {0x1ea2, 0x1ea3},
   {0x1ea4, 0x1ea5},
   {0x1ea6, 0x1ea7},
   {0x1ea8, 0x1ea9},
   {0x1eaa, 0x1eab},
   {0x1eac, 0x1ead},
   {0x1eae, 0x1eaf},
   {0x1eb0, 0x1eb1},
   {0x1eb2, 0x1eb3},
   {0x1eb4, 0x1eb5},
   {0x1eb6, 0x1eb7},
   {0x1eb8, 0x1eb9},
   {0x1eba, 0x1ebb},
   {0x1ebc, 0x1ebd},
   {0x1ebe, 0x1ebf},
   {0x1ec0, 0x1ec1},
   {0x1ec2, 0x1ec3},
   {0x1ec4, 0x1ec5},
   {0x1ec6, 0x1ec7},
   {0x1ec8, 0x1ec9},
   {0x1eca, 0x1ecb},
   {0x1ecc, 0x1ecd},
   {0x1ece, 0x1ecf},
   {0x1ed0, 0x1ed1},
   {0x1ed2, 0x1ed3},
   {0x1ed4, 0x1ed5},
   {0x1ed6, 0x1ed7},
   {0x1ed8, 0x1ed9},
   {0x1eda, 0x1edb},
   {0x1edc, 0x1edd},
   {0x1ede, 0x1edf},
   {0x1ee0, 0x1ee1},
   {0x1ee2, 0x1ee3},
   {0x1ee4, 0x1ee5},
   {0x1ee6, 0x1ee7},
   {0x1ee8, 0x1ee9},
   {0x1eea, 0x1eeb},
   {0x1eec, 0x1eed},
   {0x1eee, 0x1eef},
   {0x1ef0, 0x1ef1},
   {0x1ef2, 0x1ef3},
   {0x1ef4, 0x1ef5},
   {0x1ef6, 0x1ef7},
   {0x1ef8, 0x1ef9},
   {0x1f08, 0x1f00},
   {0x1f09, 0x1f01},
   {0x1f0a, 0x1f02},
   {0x1f0b, 0x1f03},
   {0x1f0c, 0x1f04},
   {0x1f0d, 0x1f05},
   {0x1f0e, 0x1f06},
   {0x1f0f, 0x1f07},
   {0x1f18, 0x1f10},
   {0x1f19, 0x1f11},
   {0x1f1a, 0x1f12},
   {0x1f1b, 0x1f13},
   {0x1f1c, 0x1f14},
   {0x1f1d, 0x1f15},
   {0x1f28, 0x1f20},
   {0x1f29, 0x1f21},
   {0x1f2a, 0x1f22},
   {0x1f2b, 0x1f23},
   {0x1f2c, 0x1f24},
   {0x1f2d, 0x1f25},
   {0x1f2e, 0x1f26},
   {0x1f2f, 0x1f27},
   {0x1f38, 0x1f30},
   {0x1f39, 0x1f31},
   {0x1f3a, 0x1f32},
   {0x1f3b, 0x1f33},
   {0x1f3c, 0x1f34},
   {0x1f3d, 0x1f35},
   {0x1f3e, 0x1f36},
   {0x1f3f, 0x1f37},
   {0x1f48, 0x1f40},
   {0x1f49, 0x1f41},
   {0x1f4a, 0x1f42},
   {0x1f4b, 0x1f43},
   {0x1f4c, 0x1f44},
   {0x1f4d, 0x1f45},
   {0x1f59, 0x1f51},
   {0x1f5b, 0x1f53},
   {0x1f5d, 0x1f55},
   {0x1f5f, 0x1f57},
   {0x1f68, 0x1f60},
   {0x1f69, 0x1f61},
   {0x1f6a, 0x1f62},
   {0x1f6b, 0x1f63},
   {0x1f6c, 0x1f64},
   {0x1f6d, 0x1f65},
   {0x1f6e, 0x1f66},
   {0x1f6f, 0x1f67},
   {0x1f88, 0x1f80},
   {0x1f89, 0x1f81},
   {0x1f8a, 0x1f82},
   {0x1f8b, 0x1f83},
   {0x1f8c, 0x1f84},
   {0x1f8d, 0x1f85},
   {0x1f8e, 0x1f86},
   {0x1f8f, 0x1f87},
   {0x1f98, 0x1f90},
   {0x1f99, 0x1f91},
   {0x1f9a, 0x1f92},
   {0x1f9b, 0x1f93},
   {0x1f9c, 0x1f94},
   {0x1f9d, 0x1f95},
   {0x1f9e, 0x1f96},
   {0x1f9f, 0x1f97},
   {0x1fa8, 0x1fa0},
   {0x1fa9, 0x1fa1},
   {0x1faa, 0x1fa2},
   {0x1fab, 0x1fa3},
   {0x1fac, 0x1fa4},
   {0x1fad, 0x1fa5},
   {0x1fae, 0x1fa6},
   {0x1faf, 0x1fa7},
   {0x1fb8, 0x1fb0},
   {0x1fb9, 0x1fb1},
   {0x1fba, 0x1f70},
   {0x1fbb, 0x1f71},
   {0x1fbc, 0x1fb3},
   {0x1fc8, 0x1f72},
   {0x1fc9, 0x1f73},
   {0x1fca, 0x1f74},
   {0x1fcb, 0x1f75},
   {0x1fcc, 0x1fc3},
   {0x1fd8, 0x1fd0},
   {0x1fd9, 0x1fd1},
   {0x1fda, 0x1f76},
   {0x1fdb, 0x1f77},
   {0x1fe8, 0x1fe0},
   {0x1fe9, 0x1fe1},
   {0x1fea, 0x1f7a},
   {0x1feb, 0x1f7b},
   {0x1fec, 0x1fe5},
   {0x1ff8, 0x1f78},
   {0x1ff9, 0x1f79},
   {0x1ffa, 0x1f7c},
   {0x1ffb, 0x1f7d},
   {0x1ffc, 0x1ff3},
   {0x2126, 0x3c9},
   {0x212a, 0x6b},
   {0x212b, 0xe5},
   {0x2160, 0x2170},
   {0x2161, 0x2171},
   {0x2162, 0x2172},
   {0x2163, 0x2173},
   {0x2164, 0x2174},
   {0x2165, 0x2175},
   {0x2166, 0x2176},
   {0x2167, 0x2177},
   {0x2168, 0x2178},
   {0x2169, 0x2179},
   {0x216a, 0x217a},
   {0x216b, 0x217b},
   {0x216c, 0x217c},
   {0x216d, 0x217d},
   {0x216e, 0x217e},
   {0x216f, 0x217f},
   {0x24b6, 0x24d0},
   {0x24b7, 0x24d1},
   {0x24b8, 0x24d2},
   {0x24b9, 0x24d3},
   {0x24ba, 0x24d4},
   {0x24bb, 0x24d5},
   {0x24bc, 0x24d6},
   {0x24bd, 0x24d7},
   {0x24be, 0x24d8},
   {0x24bf, 0x24d9},
   {0x24c0, 0x24da},
   {0x24c1, 0x24db},
   {0x24c2, 0x24dc},
   {0x24c3, 0x24dd},
   {0x24c4, 0x24de},
   {0x24c5, 0x24df},
   {0x24c6, 0x24e0},
   {0x24c7, 0x24e1},
   {0x24c8, 0x24e2},
   {0x24c9, 0x24e3},
   {0x24ca, 0x24e4},
   {0x24cb, 0x24e5},
   {0x24cc, 0x24e6},
   {0x24cd, 0x24e7},
   {0x24ce, 0x24e8},
   {0x24cf, 0x24e9},
   {0xff21, 0xff41},
   {0xff22, 0xff42},
   {0xff23, 0xff43},
   {0xff24, 0xff44},
   {0xff25, 0xff45},
   {0xff26, 0xff46},
   {0xff27, 0xff47},
   {0xff28, 0xff48},
   {0xff29, 0xff49},
   {0xff2a, 0xff4a},
   {0xff2b, 0xff4b},
   {0xff2c, 0xff4c},
   {0xff2d, 0xff4d},
   {0xff2e, 0xff4e},
   {0xff2f, 0xff4f},
   {0xff30, 0xff50},
   {0xff31, 0xff51},
   {0xff32, 0xff52},
   {0xff33, 0xff53},
   {0xff34, 0xff54},
   {0xff35, 0xff55},
   {0xff36, 0xff56},
   {0xff37, 0xff57},
   {0xff38, 0xff58},
   {0xff39, 0xff59},
   {0xff3a, 0xff5a},
   {0x10400, 0x10428},
   {0x10401, 0x10429},
   {0x10402, 0x1042a},
   {0x10403, 0x1042b},
   {0x10404, 0x1042c},
   {0x10405, 0x1042d},
   {0x10406, 0x1042e},
   {0x10407, 0x1042f},
   {0x10408, 0x10430},
   {0x10409, 0x10431},
   {0x1040a, 0x10432},
   {0x1040b, 0x10433},
   {0x1040c, 0x10434},
   {0x1040d, 0x10435},
   {0x1040e, 0x10436},
   {0x1040f, 0x10437},
   {0x10410, 0x10438},
   {0x10411, 0x10439},
   {0x10412, 0x1043a},
   {0x10413, 0x1043b},
   {0x10414, 0x1043c},
   {0x10415, 0x1043d},
   {0x10416, 0x1043e},
   {0x10417, 0x1043f},
   {0x10418, 0x10440},
   {0x10419, 0x10441},
   {0x1041a, 0x10442},
   {0x1041b, 0x10443},
   {0x1041c, 0x10444},
   {0x1041d, 0x10445},
   {0x1041e, 0x10446},
   {0x1041f, 0x10447},
   {0x10420, 0x10448},
   {0x10421, 0x10449},
   {0x10422, 0x1044a},
   {0x10423, 0x1044b},
   {0x10424, 0x1044c},
   {0x10425, 0x1044d},
   {0x10426, 0x1044e},
   {0x10427, 0x1044f},
};

const CaseMapping upperMappings[] =
{
   {0x61, 0x41},
   {0x62, 0x42},
   {0x63, 0x43},
   {0x64, 0x44},
   {0x65, 0x45},
   {0x66, 0x46},
   {0x67, 0x47},
   {0x68, 0x48},
   {0x69, 0x49},
   {0x6a, 0x4a},
   {0x6b, 0x4b},
   {0x6c, 0x4c},
   {0x6d, 0x4d},
   {0x6e, 0x4e},
   {0x6f, 0x4f},
   {0x70, 0x50},
   {0x71, 0x51},
   {0x72, 0x52},
   {0x73, 0x53},
   {0x74, 0x54},
   {0x75, 0x55},
   {0x76, 0x56},
   {0x77, 0x57},
   {0x78, 0x58},
   {0x79, 0x59},
   {0x7a, 0x5a},
   {0xb5, 0x39c},
   {0xe0, 0xc0},
   {0xe1, 0xc1},
   {0xe2, 0xc2},
   {0xe3, 0xc3},
   {0xe4, 0xc4},
   {0xe5, 0xc5},
   {0xe6, 0xc6},
   {0xe7, 0xc7},
   {0xe8, 0xc8},
   {0xe9, 0xc9},
   {0xea, 0xca},
   {0xeb, 0xcb},
   {0xec, 0xcc},
   {0xed, 0xcd},
   {0xee, 0xce},
   {0xef, 0xcf},
   {0xf0, 0xd0},
   {0xf1, 0xd1},
   {0xf2, 0xd2},
   {0xf3, 0xd3},
   {0xf4, 0xd4},
   {0xf5, 0xd5},
   {0xf6, 0xd6},
   {0xf8, 0xd8},
   {0xf9, 0xd9},
   {0xfa, 0xda},
   {0xfb, 0xdb},
   {0xfc, 0xdc},
   {0xfd, 0xdd},
   {0xfe, 0xde},
   {0xff, 0x178},
   {0x101, 0x100},
   {0x103, 0x102},
   {0x105, 0x104},
   {0x107, 0x106},
   {0x109, 0x108},
   {0x10b, 0x10a},
   {0x10d, 0x10c},
   {0x10f, 0x10e},
   {0x111, 0x110},
   {0x113, 0x112},
   {0x115, 0x114},
   {0x117, 0x116},
   {0x119, 0x118},
   {0x11b, 0x11a},
   {0x11d, 0x11c},
   {0x11f, 0x11e},
   {0x121, 0x120},
   {0x123, 0x122},
   {0x125, 0x124},
   {0x127, 0x126},
   {0x129, 0x128},
   {0x12b, 0x12a},
   {0x12d, 0x12c},
   {0x12f, 0x12e},
   {0x131, 0x49},
   {0x133, 0x132},
   {0x135, 0x134},
   {0x137, 0x136},
   {0x13a, 0x139},
   {0x13c, 0x13b},
   {0x13e, 0x13d},
   {0x140, 0x13f},
   {0x142, 0x141},
   {0x144, 0x143},
   {0x146, 0x145},
   {0x148, 0x147},
   {0x14b, 0x14a},
   {0x14d, 0x14c},
   {0x14f, 0x14e},
   {0x151, 0x150},
   {0x153, 0x152},
   {0x155, 0x154},
   {0x157, 0x156},
   {0x159, 0x158},
   {0x15b, 0x15a},
   {0x15d, 0x15c},
   {0x15f, 0x15e},
   {0x161, 0x160},
   {0x163, 0x162},
   {0x165, 0x164},
   {0x167, 0x166},
   {0x169, 0x168},
   {0x16b, 0x16a},
   {0x16d, 0x16c},
   {0x16f, 0x16e},
   {0x171, 0x170},
   {0x173, 0x172},
   {0x175, 0x174},
   {0x177, 0x176},
   {0x17a, 0x179},
   {0x17c, 0x17b},
   {0x17e, 0x17d},
   {0x17f, 0x53},
   {0x183, 0x182},
   {0x185, 0x184},
   {0x188, 0x187},
   {0x18c, 0x18b},
   {0x192, 0x191},
   {0x195, 0x1f6},
   {0x199, 0x198},
   {0x19e, 0x220},
   {0x1a1, 0x1a0},
   {0x1a3, 0x1a2},
   {0x1a5, 0x1a4},
   {0x1a8, 0x1a7},
   {0x1ad, 0x1ac},
   {0x1b0, 0x1af},
   {0x1b4, 0x1b3},
   {0x1b6, 0x1b5},
   {0x1b9, 0x1b8},
   {0x1bd, 0x1bc},
   {0x1bf, 0x1f7},
   {0x1c5, 0x1c4},
   {0x1c6, 0x1c4},
   {0x1c8, 0x1c7},
   {0x1c9, 0x1c7},
   {0x1cb, 0x1ca},
   {0x1cc, 0x1ca},
   {0x1ce, 0x1cd},
   {0x1d0, 0x1cf},
   {0x1d2, 0x1d1},
   {0x1d4, 0x1d3},
   {0x1d6, 0x1d5},
   {0x1d8, 0x1d7},
   {0x1da, 0x1d9},
   {0x1dc, 0x1db},
   {0x1dd, 0x18e},
   {0x1df, 0x1de},
   {0x1e1, 0x1e0},
   {0x1e3, 0x1e2},
   {0x1e5, 0x1e4},
   {0x1e7, 0x1e6},
   {0x1e9, 0x1e8},
   {0x1eb, 0x1ea},
   {0x1ed, 0x1ec},
   {0x1ef, 0x1ee},
   {0x1f2, 0x1f1},
   {0x1f3, 0x1f1},
   {0x1f5, 0x1f4},
   {0x1f9, 0x1f8},
   {0x1fb, 0x1fa},
   {0x1fd, 0x1fc},
   {0x1ff, 0x1fe},
   {0x201, 0x200},
   {0x203, 0x202},
   {0x205, 0x204},
   {0x207, 0x206},
   {0x209, 0x208},
   {0x20b, 0x20a},
   {0x20d, 0x20c},
   {0x20f, 0x20e},
   {0x211, 0x210},
   {0x213, 0x212},
   {0x215, 0x214},
   {0x217, 0x216},
   {0x219, 0x218},
   {0x21b, 0x21a},
   {0x21d, 0x21c},
   {0x21f, 0x21e},
   {0x223, 0x222},
   {0x225, 0x224},
   {0x227, 0x226},
   {0x229, 0x228},
   {0x22b, 0x22a},
   {0x22d, 0x22c},
   {0x22f, 0x22e},
   {0x231, 0x230},
   {0x233, 0x232},
   {0x253, 0x181},
   {0x254, 0x186},
   {0x256, 0x189},
   {0x257, 0x18a},
   {0x259, 0x18f},
   {0x25b, 0x190},
   {0x260, 0x193},
   {0x263, 0x194},
   {0x268, 0x197},
   {0x269, 0x196},
   {0x26f, 0x19c},
   {0x272, 0x19d},
   {0x275, 0x19f},
   {0x280, 0x1a6},
   {0x283, 0x1a9},
   {0x288, 0x1ae},
   {0x28a, 0x1b1},
   {0x28b, 0x1b2},
   {0x292, 0x1b7},
   {0x345, 0x399},
   {0x3ac, 0x386},
   {0x3ad, 0x388},
   {0x3ae, 0x389},
   {0x3af, 0x38a},
   {0x3b1, 0x391},
   {0x3b2, 0x392},
   {0x3b3, 0x393},
   {0x3b4, 0x394},
   {0x3b5, 0x395},
   {0x3b6, 0x396},
   {0x3b7, 0x397},
   {0x3b8, 0x398},
   {0x3b9, 0x399},
   {0x3ba, 0x39a},
   {0x3bb, 0x39b},
   {0x3bc, 0x39c},
   {0x3bd, 0x39d},
   {0x3be, 0x39e},
   {0x3bf, 0x39f},
   {0x3c0, 0x3a0},
   {0x3c1, 0x3a1},
   {0x3c2, 0x3a3},
   {0x3c3, 0x3a3},
   {0x3c4, 0x3a4},
   {0x3c5, 0x3a5},
   {0x3c6, 0x3a6},
   {0x3c7, 0x3a7},
   {0x3c8, 0x3a8},
   {0x3c9, 0x3a9},
   {0x3ca, 0x3aa},
   {0x3cb, 0x3ab},
   {0x3cc, 0x38c},
   {0x3cd, 0x38e},
   {0x3ce, 0x38f},
   {0x3d0, 0x392},
   {0x3d1, 0x398},
   {0x3d5, 0x3a6},
   {0x3d6, 0x3a0},
   {0x3d9, 0x3d8},
   {0x3db, 0x3da},
   {0x3dd, 0x3dc},
   {0x3df, 0x3de},
   {0x3e1, 0x3e0},
   {0x3e3, 0x3e2},
   {0x3e5, 0x3e4},
   {0x3e7, 0x3e6},
   {0x3e9, 0x3e8},
   {0x3eb, 0x3ea},
   {0x3ed, 0x3ec},
   {0x3ef, 0x3ee},
   {0x3f0, 0x39a},
   {0x3f1, 0x3a1},
   {0x3f2, 0x3f9},
   {0x3f5, 0x395},
   {0x3f8, 0x3f7},
   {0x3fb, 0x3fa},
   {0x430, 0x410},
   {0x431, 0x411},
   {0x432, 0x412},
   {0x433, 0x413},
   {0x434, 0x414},
   {0x435, 0x415},
   {0x436, 0x416},
   {0x437, 0x417},
   {0x438, 0x418},
   {0x439, 0x419},
   {0x43a, 0x41a},
   {0x43b, 0x41b},
   {0x43c, 0x41c},
   {0x43d, 0x41d},
   {0x43e, 0x41e},
   {0x43f, 0x41f},
   {0x440, 0x420},
   {0x441, 0x421},
   {0x442, 0x422},
   {0x443, 0x423},
   {0x444, 0x424},
   {0x445, 0x425},
   {0x446, 0x426},
   {0x447, 0x427},
   {0x448, 0x428},
   {0x449, 0x429},
   {0x44a, 0x42a},
   {0x44b, 0x42b},
   {0x44c, 0x42c},
   {0x44d, 0x42d},
   {0x44e, 0x42e},
   {0x44f, 0x42f},
   {0x450, 0x400},
   {0x451, 0x401},
   {0x452, 0x402},
   {0x453, 0x403},
   {0x454, 0x404},
   {0x455, 0x405},
   {0x456, 0x406},
   {0x457, 0x407},
   {0x458, 0x408},
   {0x459, 0x409},
   {0x45a, 0x40a},
   {0x45b, 0x40b},
   {0x45c, 0x40c},
   {0x45d, 0x40d},
   {0x45e, 0x40e},
   {0x45f, 0x40f},
   {0x461, 0x460},
   {0x463, 0x462},
   {0x465, 0x464},
   {0x467, 0x466},
   {0x469, 0x468},
   {0x46b, 0x46a},
   {0x46d, 0x46c},
   {0x46f, 0x46e},
   {0x471, 0x470},
   {0x473, 0x472},
   {0x475, 0x474},
   {0x477, 0x476},
   {0x479, 0x478},
   {0x47b, 0x47a},
   {0x47d, 0x47c},
   {0x47f, 0x47e},
   {0x481, 0x480},
   {0x48b, 0x48a},
   {0x48d, 0x48c},
   {0x48f, 0x48e},
   {0x491, 0x490},
   {0x493, 0x492},
   {0x495, 0x494},
   {0x497, 0x496},
   {0x499, 0x498},
   {0x49b, 0x49a},
   {0x49d, 0x49c},
   {0x49f, 0x49e},
   {0x4a1, 0x4a0},
   {0x4a3, 0x4a2},
   {0x4a5, 0x4a4},
   {0x4a7, 0x4a6},
   {0x4a9, 0x4a8},
   {0x4ab, 0x4aa},
   {0x4ad, 0x4ac},
   {0x4af, 0x4ae},
   {0x4b1, 0x4b0},
   {0x4b3, 0x4b2},
   {0x4b5, 0x4b4},
   {0x4b7, 0x4b6},
   {0x4b9, 0x4b8},
   {0x4bb, 0x4ba},
   {0x4bd, 0x4bc},
   {0x4bf, 0x4be},
   {0x4c2, 0x4c1},
   {0x4c4, 0x4c3},
   {0x4c6, 0x4c5},
   {0x4c8, 0x4c7},
   {0x4ca, 0x4c9},
   {0x4cc, 0x4cb},
   {0x4ce, 0x4cd},
   {0x4d1, 0x4d0},
   {0x4d3, 0x4d2},
   {0x4d5, 0x4d4},
   {0x4d7, 0x4d6},
   {0x4d9, 0x4d8},
   {0x4db, 0x4da},
   {0x4dd, 0x4dc},
   {0x4df, 0x4de},
   {0x4e1, 0x4e0},
   {0x4e3, 0x4e2},
   {0x4e5, 0x4e4},
   {0x4e7, 0x4e6},
   {0x4e9, 0x4e8},
   {0x4eb, 0x4ea},
   {0x4ed, 0x4ec},
   {0x4ef, 0x4ee},
   {0x4f1, 0x4f0},
   {0x4f3, 0x4f2},
   {0x4f5, 0x4f4},
   {0x4f9, 0x4f8},
   {0x501, 0x500},
   {0x503, 0x502},
   {0x505, 0x504},
   {0x507, 0x506},
   {0x509, 0x508},
   {0x50b, 0x50a},
   {0x50d, 0x50c},
   {0x50f, 0x50e},
   {0x561, 0x531},
   {0x562, 0x532},
   {0x563, 0x533},
   {0x564, 0x534},
   {0x565, 0x535},
   {0x566, 0x536},
   {0x567, 0x537},
   {0x568, 0x538},
   {0x569, 0x539},
   {0x56a, 0x53a},
   {0x56b, 0x53b},
   {0x56c, 0x53c},
   {0x56d, 0x53d},
   {0x56e, 0x53e},
   {0x56f, 0x53f},
   {0x570, 0x540},
   {0x571, 0x541},
   {0x572, 0x542},
   {0x573, 0x543},
   {0x574, 0x544},
   {0x575, 0x545},
   {0x576, 0x546},
   {0x577, 0x547},
   {0x578, 0x548},
   {0x579, 0x549},
   {0x57a, 0x54a},
   {0x57b, 0x54b},
   {0x57c, 0x54c},
   {0x57d, 0x54d},
   {0x57e, 0x54e},
   {0x57f, 0x54f},
   {0x580, 0x550},
   {0x581, 0x551},
   {0x582, 0x552},
   {0x583, 0x553},
   {0x584, 0x554},
   {0x585, 0x555},
   {0x586, 0x556},
   {0x1e01, 0x1e00},
   {0x1e03, 0x1e02},
   {0x1e05, 0x1e04},
   {0x1e07, 0x1e06},
   {0x1e09, 0x1e08},
   {0x1e0b, 0x1e0a},
   {0x1e0d, 0x1e0c},
   {0x1e0f, 0x1e0e},
   {0x1e11, 0x1e10},
   {0x1e13, 0x1e12},
   {0x1e15, 0x1e14},
   {0x1e17, 0x1e16},
   {0x1e19, 0x1e18},
   {0x1e1b, 0x1e1a},
   {0x1e1d, 0x1e1c},
   {0x1e1f, 0x1e1e},
   {0x1e21, 0x1e20},
   {0x1e23, 0x1e22},
   {0x1e25, 0x1e24},
   {0x1e27, 0x1e26},
   {0x1e29, 0x1e28},
   {0x1e2b, 0x1e2a},
   {0x1e2d, 0x1e2c},
   {0x1e2f, 0x1e2e},
   {0x1e31, 0x1e30},
   {0x1e33, 0x1e32},
   {0x1e35, 0x1e34},
   {0x1e37, 0x1e36},
   {0x1e39, 0x1e38},
   {0x1e3b, 0x1e3a},
   {0x1e3d, 0x1e3c},
   {0x1e3f, 0x1e3e},
   {0x1e41, 0x1e40},
   {0x1e43, 0x1e42},
   {0x1e45, 0x1e44},
   {0x1e47, 0x1e46},
   {0x1e49, 0x1e48},
   {0x1e4b, 0x1e4a},
   {0x1e4d, 0x1e4c},
   {0x1e4f, 0x1e4e},
   {0x1e51, 0x1e50},
   {0x1e53, 0x1e52},
   {0x1e55, 0x1e54},
   {0x1e57, 0x1e56},
   {0x1e59, 0x1e58},
   {0x1e5b, 0x1e5a},
   {0x1e5d, 0x1e5c},
   {0x1e5f, 0x1e5e},
   {0x1e61, 0x1e60},
   {0x1e63, 0x1e62},
   {0x1e65, 0x1e64},
   {0x1e67, 0x1e66},
   {0x1e69, 0x1e68},
   {0x1e6b, 0x1e6a},
   {0x1e6d, 0x1e6c},
   {0x1e6f, 0x1e6e},
   {0x1e71, 0x1e70},
   {0x1e73, 0x1e72},
   {0x1e75, 0x1e74},
   {0x1e77, 0x1e76},
   {0x1e79, 0x1e78},
   {0x1e7b, 0x1e7a},
   {0x1e7d, 0x1e7c},
   {0x1e7f, 0x1e7e},
   {0x1e81, 0x1e80},
   {0x1e83, 0x1e82},
   {0x1e85, 0x1e84},
   {0x1e87, 0x1e86},
   {0x1e89, 0x1e88},
   {0x1e8b, 0x1e8a},
   {0x1e8d, 0x1e8c},
   {0x1e8f, 0x1e8e},
   {0x1e91, 0x1e90},
   {0x1e93, 0x1e92},
   {0x1e95, 0x1e94},
   {0x1e9b, 0x1e60},
   {0x1ea1, 0x1ea0},
   {0x1ea3, 0x1ea2},
   {0x1ea5, 0x1ea4},
   {0x1ea7, 0x1ea6},
   {0x1ea9, 0x1ea8},
   {0x1eab, 0x1eaa},
   {0x1ead, 0x1eac},
   {0x1eaf, 0x1eae},
   {0x1eb1, 0x1eb0},
   {0x1eb3, 0x1eb2},
   {0x1eb5, 0x1eb4},
   {0x1eb7, 0x1eb6},
   {0x1eb9, 0x1eb8},
   {0x1ebb, 0x1eba},
   {0x1ebd, 0x1ebc},
   {0x1ebf, 0x1ebe},
   {0x1ec1, 0x1ec0},
   {0x1ec3, 0x1ec2},
   {0x1ec5, 0x1ec4},
   {0x1ec7, 0x1ec6},
   {0x1ec9, 0x1ec8},
   {0x1ecb, 0x1eca},
   {0x1ecd, 0x1ecc},
   {0x1ecf, 0x1ece},
   {0x1ed1, 0x1ed0},
   {0x1ed3, 0x1ed2},
   {0x1ed5, 0x1ed4},
   {0x1ed7, 0x1ed6},
   {0x1ed9, 0x1ed8},
   {0x1edb, 0x1eda},
   {0x1edd, 0x1edc},
   {0x1edf, 0x1ede},
   {0x1ee1, 0x1ee0},
   {0x1ee3, 0x1ee2},
   {0x1ee5, 0x1ee4},
   {0x1ee7, 0x1ee6},
   {0x1ee9, 0x1ee8},
   {0x1eeb, 0x1eea},
   {0x1eed, 0x1eec},
   {0x1eef, 0x1eee},
   {0x1ef1, 0x1ef0},
   {0x1ef3, 0x1ef2},
   {0x1ef5, 0x1ef4},
   {0x1ef7, 0x1ef6},
   {0x1ef9, 0x1ef8},
   {0x1f00, 0x1f08},
   {0x1f01, 0x1f09},
   {0x1f02, 0x1f0a},
   {0x1f03, 0x1f0b},
   {0x1f04, 0x1f0c},
   {0x1f05, 0x1f0d},
   {0x1f06, 0x1f0e},
   {0x1f07, 0x1f0f},
   {0x1f10, 0x1f18},
   {0x1f11, 0x1f19},
   {0x1f12, 0x1f1a},
   {0x1f13, 0x1f1b},
   {0x1f14, 0x1f1c},
   {0x1f15, 0x1f1d},
   {0x1f20, 0x1f28},
   {0x1f21, 0x1f29},
   {0x1f22, 0x1f2a},
   {0x1f23, 0x1f2b},
   {0x1f24, 0x1f2c},
   {0x1f25, 0x1f2d},
   {0x1f26, 0x1f2e},
   {0x1f27, 0x1f2f},
   {0x1f30, 0x1f38},
   {0x1f31, 0x1f39},
   {0x1f32, 0x1f3a},
   {0x1f33, 0x1f3b},
   {0x1f34, 0x1f3c},
   {0x1f35, 0x1f3d},
   {0x1f36, 0x1f3e},
   {0x1f37, 0x1f3f},
   {0x1f40, 0x1f48},
   {0x1f41, 0x1f49},
   {0x1f42, 0x1f4a},
   {0x1f43, 0x1f4b},
   {0x1f44, 0x1f4c},
   {0x1f45, 0x1f4d},
   {0x1f51, 0x1f59},
   {0x1f53, 0x1f5b},
   {0x1f55, 0x1f5d},
   {0x1f57, 0x1f5f},
   {0x1f60, 0x1f68},
   {0x1f61, 0x1f69},
   {0x1f62, 0x1f6a},
   {0x1f63, 0x1f6b},
   {0x1f64, 0x1f6c},
   {0x1f65, 0x1f6d},
   {0x1f66, 0x1f6e},
   {0x1f67, 0x1f6f},
   {0x1f70, 0x1fba},
   {0x1f71, 0x1fbb},
   {0x1f72, 0x1fc8},
   {0x1f73, 0x1fc9},
   {0x1f74, 0x1fca},
   {0x1f75, 0x1fcb},
   {0x1f76, 0x1fda},
   {0x1f77, 0x1fdb},
   {0x1f78, 0x1ff8},
   {0x1f79, 0x1ff9},
   {0x1f7a, 0x1fea},
   {0x1f7b, 0x1feb},
   {0x1f7c, 0x1ffa},
   {0x1f7d, 0x1ffb},
   {0x1f80, 0x1f88},
   {0x1f81, 0x1f89},
   {0x1f82, 0x1f8a},
   {0x1f83, 0x1f8b},
   {0x1f84, 0x1f8c},
   {0x1f85, 0x1f8d},
   {0x1f86, 0x1f8e},
   {0x1f87, 0x1f8f},
   {0x1f90, 0x1f98},
   {0x1f91, 0x1f99},
   {0x1f92, 0x1f9a},
   {0x1f93, 0x1f9b},
   {0x1f94, 0x1f9c},
   {0x1f95, 0x1f9d},
   {0x1f96, 0x1f9e},
   {0x1f97, 0x1f9f},
   {0x1fa0, 0x1fa8},
   {0x1fa1, 0x1fa9},
   {0x1fa2, 0x1faa},
   {0x1fa3, 0x1fab},
   {0x1fa4, 0x1fac},
   {0x1fa5, 0x1fad},
   {0x1fa6, 0x1fae},
   {0x1fa7, 0x1faf},
   {0x1fb0, 0x1fb8},
   {0x1fb1, 0x1fb9},
   {0x1fb3, 0x1fbc},
   {0x1fbe, 0x399},
   {0x1fc3, 0x1fcc},
   {0x1fd0, 0x1fd8},
   {0x1fd1, 0x1fd9},
   {0x1fe0, 0x1fe8},
   {0x1fe1, 0x1fe9},
   {0x1fe5, 0x1fec},
   {0x1ff3, 0x1ffc},
   {0x2170, 0x2160},
   {0x2171, 0x2161},
   {0x2172, 0x2162},
   {0x2173, 0x2163},
   {0x2174, 0x2164},
   {0x2175, 0x2165},
   {0x2176, 0x2166},
   {0x2177, 0x2167},
   {0x2178, 0x2168},
   {0x2179, 0x2169},
   {0x217a, 0x216a},
   {0x217b, 0x216b},
   {0x217c, 0x216c},
   {0x217d, 0x216d},
   {0x217e, 0x216e},
   {0x217f, 0x216f},
   {0x24d0, 0x24b6},
   {0x24d1, 0x24b7},
   {0x24d2, 0x24b8},
   {0x24d3, 0x24b9},
   {0x24d4, 0x24ba},
   {0x24d5, 0x24bb},
   {0x24d6, 0x24bc},
   {0x24d7, 0x24bd},
   {0x24d8, 0x24be},
   {0x24d9, 0x24bf},
   {0x24da, 0x24c0},
   {0x24db, 0x24c1},
   {0x24dc, 0x24c2},
   {0x24dd, 0x24c3},
   {0x24de, 0x24c4},
   {0x24df, 0x24c5},
   {0x24e0, 0x24c6},
   {0x24e1, 0x24c7},
   {0x24e2, 0x24c8},
   {0x24e3, 0x24c9},
   {0x24e4, 0x24ca},
   {0x24e5, 0x24cb},
   {0x24e6, 0x24cc},
   {0x24e7, 0x24cd},
   {0x24e8, 0x24ce},
   {0x24e9, 0x24cf},
   {0xff41, 0xff21},
   {0xff42, 0xff22},
   {0xff43, 0xff23},
   {0xff44, 0xff24},
   {0xff45, 0xff25},
   {0xff46, 0xff26},
   {0xff47, 0xff27},
   {0xff48, 0xff28},
   {0xff49, 0xff29},
   {0xff4a, 0xff2a},
   {0xff4b, 0xff2b},
   {0xff4c, 0xff2c},
   {0xff4d, 0xff2d},
   {0xff4e, 0xff2e},
   {0xff4f, 0xff2f},
   {0xff50, 0xff30},
   {0xff51, 0xff31},
   {0xff52, 0xff32},
   {0xff53, 0xff33},
   {0xff54, 0xff34},
   {0xff55, 0xff35},
   {0xff56, 0xff36},
   {0xff57, 0xff37},
   {0xff58, 0xff38},
   {0xff59, 0xff39},
   {0xff5a, 0xff3a},
   {0x10428, 0x10400},
   {0x10429, 0x10401},
   {0x1042a, 0x10402},
   {0x1042b, 0x10403},
   {0x1042c, 0x10404},
   {0x1042d, 0x10405},
   {0x1042e, 0x10406},
   {0x1042f, 0x10407},
   {0x10430, 0x10408},
   {0x10431, 0x10409},
   {0x10432, 0x1040a},
   {0x10433, 0x1040b},
   {0x10434, 0x1040c},
   {0x10435, 0x1040d},
   {0x10436, 0x1040e},
   {0x10437, 0x1040f},
   {0x10438, 0x10410},
   {0x10439, 0x10411},
   {0x1043a, 0x10412},
   {0x1043b, 0x10413},
   {0x1043c, 0x10414},
   {0x1043d, 0x10415},
   {0x1043e, 0x10416},
   {0x1043f, 0x10417},
   {0x10440, 0x10418},
   {0x10441, 0x10419},
   {0x10442, 0x1041a},
   {0x10443, 0x1041b},
   {0x10444, 0x1041c},
   {0x10445, 0x1041d},
   {0x10446, 0x1041e},
   {0x10447, 0x1041f},
   {0x10448, 0x10420},
   {0x10449, 0x10421},
   {0x1044a, 0x10422},
   {0x1044b, 0x10423},
   {0x1044c, 0x10424},
   {0x1044d, 0x10425},
   {0x1044e, 0x10426},
   {0x1044f, 0x10427},
};

const CaseMapping* const lowerMappingsEnd = lowerMappings +
   (sizeof(lowerMappings)/sizeof(lowerMappings[0]));

const CaseMapping* const upperMappingsEnd = upperMappings +
   (sizeof(upperMappings)/sizeof(upperMappings[0]));

struct MappingOrdering
{
   bool operator()(const CaseMapping& x, const CaseMapping& y)
   {
      return x.codePoint < y.codePoint;
   }
};

struct Transformer
{
   Transformer(const CaseMapping* const begin, const CaseMapping* const end)
      : m_begin(begin)
      , m_end(end)
   {
   }

   UInt32 operator()(UInt32 in) const
   {
      CaseMapping val = { in, 0 };
      const CaseMapping* i = std::lower_bound(m_begin, m_end, val, MappingOrdering());
      if (i == m_end || i->codePoint != in)
      {
         return in;
      }
      else
      {
         return i->mapping;
      }
   }
   const CaseMapping* const m_begin;
   const CaseMapping* const m_end;
};

} // end unnamed namespace

bool toUpperCaseInPlace(char* input)
{
   return transformInPlace(input, Transformer(upperMappings, upperMappingsEnd));
}

String toUpperCase(const char* input)
{
   return transform(input, Transformer(upperMappings, upperMappingsEnd));
}

bool toLowerCaseInPlace(char* input)
{
   return transformInPlace(input, Transformer(lowerMappings, lowerMappingsEnd));
}

String toLowerCase(const char* input)
{
   return transform(input, Transformer(lowerMappings, lowerMappingsEnd));
}

} // end namespace UTF8Utils

} // end namespace BLOCXX_NAMESPACE