public override bool Write(ref DirectBuffer directBuf)
{
if (_charPos == -1)
{
if (_byteLen <= _writeBuf.WriteSpaceLeft)
{
// Can simply write the string to the buffer
if (_str != null)
{
_writeBuf.WriteString(_str, _charLen);
_str = null;
}
else
{
Contract.Assert(_chars != null);
_writeBuf.WriteChars(_chars, _charLen);
_str = null;
}
_writeBuf = null;
return(true);
}
if (_byteLen <= _writeBuf.UsableSize)
{
// Buffer is currently too full, but the string can fit. Force a write to fill.
return(false);
}
// Bad case: the string doesn't fit in our buffer.
_charPos = 0;
// For strings, chunked/incremental conversion isn't supported
// (see https://visualstudio.uservoice.com/forums/121579-visual-studio/suggestions/6584398-add-system-text-encoder-convert-method-string-in)
// So for now allocate a temporary byte buffer to hold the entire string and write it directly.
if (_str != null)
{
directBuf.Buffer = new byte[_byteLen];
_writeBuf.TextEncoding.GetBytes(_str, 0, _charLen, directBuf.Buffer, 0);
return(false);
}
Contract.Assert(_chars != null);
// For char arrays, fall through to chunked writing below
}
if (_str != null)
{
// We did a direct buffer write above, and must now clean up
_str = null;
_writeBuf = null;
return(true);
}
int charsUsed;
bool completed;
_writeBuf.WriteStringChunked(_chars, _charPos, _chars.Length - _charPos, false, out charsUsed, out completed);
if (completed)
{
// Flush encoder
_writeBuf.WriteStringChunked(_chars, _charPos, _chars.Length - _charPos, true, out charsUsed, out completed);
_chars = null;
_writeBuf = null;
return(true);
}
_charPos += charsUsed;
return(false);
}