void
XalanOutputStream::setOutputEncoding(const XalanDOMString& theEncoding)
{
// Flush, just in case. This should probably be an error...
flushBuffer();
XalanTranscodingServices::destroyTranscoder(m_transcoder);
XalanTranscodingServices::eCode theCode = XalanTranscodingServices::OK;
// This turns on an optimization that we can only do if
// XalanDOMChar == sizeof(ushort). See doWrite().
#if !defined(XALAN_XALANDOMCHAR_USHORT_MISMATCH)
if (XalanTranscodingServices::encodingIsUTF16(theEncoding) == true)
{
m_writeAsUTF16 = true;
}
else
#endif
{
m_transcoder = XalanTranscodingServices::makeNewTranscoder(
getMemoryManager(),
theEncoding,
theCode,
m_transcoderBlockSize);
if (theCode == XalanTranscodingServices::UnsupportedEncoding)
{
XalanDOMString theBuffer(getMemoryManager());
throw UnsupportedEncodingException(theEncoding, theBuffer);
}
else if (theCode != XalanTranscodingServices::OK)
{
XalanDOMString theBuffer(getMemoryManager());
throw TranscoderInternalFailureException(theEncoding, theBuffer);
}
assert(m_transcoder != 0);
}
m_encoding = theEncoding;
const XalanTranscodingServices::XalanXMLByte* theProlog =
XalanTranscodingServices::getStreamProlog(theEncoding);
assert(theProlog != 0);
const size_type theLength = XalanTranscodingServices::length(theProlog);
if (theLength > 0)
{
#if defined(XALAN_OLD_STYLE_CASTS)
write((const char*)theProlog, theLength);
#else
write(reinterpret_cast<const char*>(theProlog), theLength);
#endif
}
}
int Encodings::toBytes(int encoding, wchar wc, byte *dest){
if (encoding < -6 || encoding == -1 || encoding >= encNamesNum)
throw UnsupportedEncodingException(SString(encoding));
if (encoding >= 0){
dest[0] = TO_CHAR(encoding, wc);
return 1;
};
if (encoding == ENC_UTF8){
int dpos = 0;
if (wc <= 0x7F){
dest[dpos] = wc & 0x7F;
};
if (wc > 0x7F && wc <= 0x7FF){
dest[dpos] = 0xC0 + (wc>>6);
dpos++;
dest[dpos] = 0x80 + (wc&0x3F);
};
int Encodings::getEncodingBOMSize(int encoding){
if (encoding >= -1 || encoding < -6) throw UnsupportedEncodingException(DString("getEncodingBOM was called for bad encoding"));
return bomArraySize[-encoding-2];
}