internal void GetStorage(InternalBodyFormat format, Charset charset, out DataStorage outStorage, out long outStart, out long outEnd)
{
if (format == this.internalFormat && (format == InternalBodyFormat.RtfCompressed || charset == null || charset == this.charset))
{
this.storage.AddRef();
outStorage = this.storage;
outStart = this.start;
outEnd = this.end;
return;
}
outStorage = new BodyFormatConversionStorage(this.storage, this.start, this.end, this.internalFormat, this.charset, format, charset);
outStart = 0L;
outEnd = long.MaxValue;
}
public override Stream OpenReadStream(long start, long end)
{
base.ThrowIfDisposed();
BodyFormatConversionStorage.BodyFormatConversion conversion = BodyFormatConversionStorage.GetConversion(this.originalFormat, this.targetFormat);
TextConverter converter = null;
Encoding inputEncoding = null;
if (this.originalCharset != null)
{
inputEncoding = this.originalCharset.GetEncoding();
}
Encoding outputEncoding = null;
if (this.targetCharset != null)
{
outputEncoding = this.targetCharset.GetEncoding();
}
Stream stream = this.originalStorage.OpenReadStream(this.originalStart, this.originalEnd);
switch (conversion)
{
case BodyFormatConversionStorage.BodyFormatConversion.HtmlToText:
converter = new HtmlToText
{
InputEncoding = inputEncoding,
OutputEncoding = outputEncoding
};
break;
case BodyFormatConversionStorage.BodyFormatConversion.HtmlToEnriched:
converter = new HtmlToEnriched
{
InputEncoding = inputEncoding,
OutputEncoding = outputEncoding
};
break;
case BodyFormatConversionStorage.BodyFormatConversion.RtfCompressedToText:
stream = new ConverterStream(stream, new RtfCompressedToRtf(), ConverterStreamAccess.Read);
converter = new RtfToText
{
OutputEncoding = outputEncoding
};
break;
case BodyFormatConversionStorage.BodyFormatConversion.TextToText:
converter = new TextToText
{
InputEncoding = inputEncoding,
OutputEncoding = outputEncoding
};
break;
case BodyFormatConversionStorage.BodyFormatConversion.HtmlToHtml:
converter = new HtmlToHtml
{
InputEncoding = inputEncoding,
OutputEncoding = outputEncoding
};
break;
case BodyFormatConversionStorage.BodyFormatConversion.EnrichedToText:
converter = new EnrichedToText
{
InputEncoding = inputEncoding,
OutputEncoding = outputEncoding
};
break;
}
return(new ConverterStream(stream, converter, ConverterStreamAccess.Read));
}