public static MultiPart Parse(byte[] buf, int length, Encoding encoding = null)
{
var p = new MultiPart(encoding);
if (buf[0] == LF)
{
p.m_EOL = EOL_LF_BYTES;
}
else if (buf[0] == CR && buf[1] == LF)
{
p.m_EOL = EOL_CRLF_BYTES;
}
else
{
throw new NFXException(StringConsts.MULTIPART_NO_LF_NOR_CRLF_ISNT_FOUND_ERROR + typeof(MultiPart).Name + ".Parse");
}
int eolLength = p.m_EOL.Length;
int doubleEOLLength = eolLength << 1;
byte[] doubleEOL = new byte[doubleEOLLength];
Array.Copy(p.m_EOL, 0, doubleEOL, 0, eolLength); Array.Copy(p.m_EOL, 0, doubleEOL, eolLength, eolLength);
int separatorPos = StreamHelpers.FindIndex(buf, 0, length, doubleEOL);
if (separatorPos == StreamHelpers.NOT_FOUND_POS)
{
throw new NFXException(StringConsts.MULTIPART_DOUBLE_EOL_ISNT_FOUND_AFTER_HEADER_ERROR + typeof(MultiPart).Name + ".Parse");
}
string prmsStr = p.m_Encoding.GetString(buf, 0, separatorPos);
p.m_Parameters = MultiPartParameters.Parse(prmsStr, p.m_EOL, p.m_Encoding);
for (int iEOL = 0, iBuf = length - eolLength; iEOL < eolLength; iEOL++, iBuf++)
{
if (p.m_EOL[iEOL] != buf[iBuf])
{
throw new NFXException("Invalid content EOL. " + typeof(MultiPart) + ".Parse()");
}
}
int contentLength = length - separatorPos - doubleEOLLength - eolLength;
p.m_Content = new byte[contentLength];
Array.Copy(buf, separatorPos + doubleEOLLength, p.m_Content, 0, contentLength);
if (p.Parameters.IsField)
{
p.m_ContentString = p.m_Encoding.GetString(p.m_Content);
}
return(p);
}