/**
* Pre-increment operator. Reads the next unicode character and sets
* the state appropriately.
* Note - not protected against overruns.
*/
FTUnicodeStringItr& operator++()
{
cur = next;
// unicode handling
switch (sizeof(T)) {
case 1: // UTF-8
// get this character
readUTF8(); break;
case 2: // UTF-16
readUTF16(); break;
case 4: // UTF-32
// fall through
default: // error condition really, but give it a shot anyway
curChar = *next_32++;
}
return *this;
}
/*--------------------------------------------------------------------------*/
Tuint CFilterUTF::onFilterReadText(IReader& a_rReader, Twstr a_pBuffer, const Tuint a_cSize)
{ CALL
Tuint wc;
Tuint result = 0;
Tuint count = a_cSize;
Tbuffer dst = (Tbuffer)a_pBuffer;
while (count-- > 0)
{
// Read UTF character.
switch (m_UTFType)
{
case e_UTF8:
{
if (!readUTF8(a_rReader, wc))
return result;
break;
}
case e_UTF16BE:
{
if (!readUTF16(a_rReader, wc, true))
return result;
break;
}
case e_UTF16LE:
{
if (!readUTF16(a_rReader, wc, false))
return result;
break;
}
case e_UTF32BE:
{
if (!readUTF32(a_rReader, wc, true))
return result;
break;
}
case e_UTF32LE:
{
if (!readUTF32(a_rReader, wc, true))
return result;
break;
}
case e_AUTODETECT:
default:
{
WARNING(STR("UTF type of the current filter is unknown."));
return result;
}
}
// Convert into the Unicode buffer.
#if (defined(__WCHAR_S_UCS2__) || defined(__WCHAR_U_UCS2__))
if ((wc < 0x10000) && !((wc >= 0xD800) && (wc < 0xE000)))
{
#if defined(__BIG_ENDIAN__)
dst[0] = (Tbyte)(wc >> 8);
dst[1] = (Tbyte)(wc);
#else
dst[0] = (Tbyte)(wc);
dst[1] = (Tbyte)(wc >> 8);
#endif
}
else
{
/*--------------------------------------------------------------------------*/
Tuint CFilterUTF::onFilterReadText(IReader& a_rReader, Tsstr a_pBuffer, const Tuint a_cSize)
{ CALL
Tuint wc;
Tuint result = 0;
Tuint count = a_cSize;
Tbuffer dst = (Tbuffer)a_pBuffer;
while (count-- > 0)
{
// Read UTF character.
switch (m_UTFType)
{
case e_UTF8:
{
if (!readUTF8(a_rReader, wc))
return result;
break;
}
case e_UTF16BE:
{
if (!readUTF16(a_rReader, wc, true))
return result;
break;
}
case e_UTF16LE:
{
if (!readUTF16(a_rReader, wc, false))
return result;
break;
}
case e_UTF32BE:
{
if (!readUTF32(a_rReader, wc, true))
return result;
break;
}
case e_UTF32LE:
{
if (!readUTF32(a_rReader, wc, true))
return result;
break;
}
case e_AUTODETECT:
default:
{
WARNING(STR("UTF type of the current filter is unknown."));
return result;
}
}
// Convert into the ASCII buffer.
if (wc < 0x100)
dst[0] = (Tbyte)(wc);
else
{
WARNING(STR("Cannot convert wide character into the ASCII one (character code is %hU).") COMMA wc);
return result;
}
// Take next character.
dst += sizeof(Tschar);
++result;
}
return result;
}
