/// <summary>
/// Loads the contents of this <see cref="ITextDocument"/> from the specified <see cref="DrxDocument"/>.
/// </summary>
public static void LoadFromDrx(this ITextDocument rtf, DrxDocument document)
{
if (document.Header.BodyType != DrxBodyType.Rtf)
{
throw new Exception("Document is of an unsupported encoding.");
}
var bytes = document.GetPlainTextBodyAsType(DrxBodyType.Rtf);
if (bytes.Length <= 0)
{
// Remember to clear the document,
// as we don't want leftover state for new ones
rtf.SetText(TextSetOptions.None, string.Empty);
return;
}
using (var stream = new InMemoryRandomAccessStream())
{
var writeStream = stream.AsStreamForWrite();
writeStream.Write(bytes, 0, bytes.Length);
writeStream.Position = 0;
stream.Seek(0);
rtf.LoadFromStream(TextSetOptions.FormatRtf, stream);
}
}
/// <summary>
/// Exports the document as HTML to the specified stream.
/// </summary>
public static void Export(this DrxDocument document, Stream stream, IFlagResolver resolver = null)
{
var rtfHtml = Encoding.UTF8.GetString(document.GetPlainTextBodyAsType(DrxBodyType.Html));
// Execute redactions
var regex = new Regex(@"\<span[^\<]*background:#FF0000[^\<]*\>(.+?)\<\/span\>");
rtfHtml = regex.Replace(rtfHtml, @"<span>[REDACTED]</span>");
// Build the "short" security level ID
var secKey = document.Header.SecurityLevel.ToString().ToUpper();
var secValue = ConverterMappings.SecurityLevelToSecFlag[document.Header.SecurityLevel];
var flagBuilder = new StringBuilder();
var count = document.Header.Flags.Count;
if (resolver != null && count > 0)
{
var i = 0;
foreach (var id in document.Header.Flags)
{
var flag = resolver.ResolveFlag(id);
flagBuilder.Append(flag.Tag);
if (i < count)
{
flagBuilder.Append("/");
}
i++;
}
// strip the trailing slash
flagBuilder.Length--;
}
// Write it out to HTML
using (var s = new StreamWriter(stream, Encoding.UTF8, 1024, true))
using (var w = new HtmlTextWriter(s))
{
w["html"]
["head"]
["title"].Text(document.Header.Title)["/title"]
["/head"]
["body"].Attr("style", "font-family: Arial;")
["h1"].Text(document.Header.Title)["/h1"]
["h3"].Text($"{secKey} {secValue}//{flagBuilder}")["/h3"].Flush();
w.WriteRaw(rtfHtml);
w["/body"]["/html"].Flush();
}
}