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trunk/branch integration: TextEncoding update

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This commit is contained in:
Marian Krivos
2011-08-22 18:22:56 +00:00
parent d35ecf85a2
commit e066d033a2
8 changed files with 391 additions and 80 deletions
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110
Foundation/src/UTF16Encoding.cpp
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@@ -143,7 +143,36 @@ int UTF16Encoding::convert(const unsigned char* bytes) const
unsigned char* p = (unsigned char*) &uc;
*p++ = *bytes++;
*p++ = *bytes++;
return _flipBytes ? ByteOrder::flipBytes(uc) : uc;
if (_flipBytes)
{
ByteOrder::flipBytes(uc);
}
if (uc >= 0xd800 && uc < 0xdc00)
{
UInt16 uc2;
p = (unsigned char*) &uc2;
*p++ = *bytes++;
*p++ = *bytes++;
if (_flipBytes)
{
ByteOrder::flipBytes(uc2);
}
if (uc2 >= 0xdc00 && uc2 < 0xe000)
{
return ((uc & 0x3ff) << 10) + (uc2 & 0x3ff) + 0x10000;
}
else
{
return -1;
}
}
else
{
return uc;
}
}
@@ -184,4 +213,83 @@ int UTF16Encoding::convert(int ch, unsigned char* bytes, int length) const
}
int UTF16Encoding::queryConvert(const unsigned char* bytes, int length) const
{
int ret = -2;
if (length >= 2)
{
UInt16 uc;
unsigned char* p = (unsigned char*) &uc;
*p++ = *bytes++;
*p++ = *bytes++;
if (_flipBytes)
ByteOrder::flipBytes(ret);
if (uc >= 0xd800 && uc < 0xdc00)
{
if (length >= 4)
{
UInt16 uc2;
p = (unsigned char*) &uc2;
*p++ = *bytes++;
*p++ = *bytes++;
if (_flipBytes)
ByteOrder::flipBytes(ret);
if (uc2 >= 0xdc00 && uc < 0xe000)
{
ret = ((uc & 0x3ff) << 10) + (uc2 & 0x3ff) + 0x10000;
}
else
{
ret = -1; // Malformed sequence
}
}
else
{
ret = -4; // surrogate pair, four bytes needed
}
}
else
{
ret = uc;
}
}
return ret;
}
int UTF16Encoding::sequenceLength(const unsigned char* bytes, int length) const
{
int ret = -2;
if (_flipBytes)
{
if (length >= 1)
{
unsigned char c = *bytes;
if (c >= 0xd8 && c < 0xdc)
ret = 4;
else
ret = 2;
}
}
else
{
if (length >= 2)
{
UInt16 uc;
unsigned char* p = (unsigned char*) &uc;
*p++ = *bytes++;
*p++ = *bytes++;
if (uc >= 0xd800 && uc < 0xdc00)
ret = 4;
else
ret = 2;
}
}
return ret;
}
} // namespace Poco