private static Formplot?ReadFormplot(Stream metadataStream, Stream?pointDataStream, Version version, FormplotTypes[]?acceptedTypes)
{
using var reader = XmlReader.Create(metadataStream, CreateXmlReaderSettings());
reader.MoveToElement();
while (reader.Read() && reader.NodeType != XmlNodeType.EndElement)
{
if (reader.Name != FormplotRootTag && reader.Name != PropertiesRootTag)
{
continue;
}
if (!EnumParser <FormplotTypes> .TryParse(reader.GetAttribute("Type") ?? "", out var plotType))
{
plotType = FormplotTypes.None; // This code path is for Property Files (they don't have a form plot type)
}
if (acceptedTypes != null && !acceptedTypes.Contains(plotType))
{
return(null);
}
var targetVersion = FormplotHelper.GetFileFormatVersion(plotType);
if (version > targetVersion)
{
throw new NotSupportedException($"Invalid form plot file. Version {version} is not supported.");
}
return(CreateFormplot(pointDataStream, version, plotType, reader));
}
return(null);
}
private static void WriteFileVersion <TPoint, TGeometry>(Formplot <TPoint, TGeometry> plot, ZipArchive zipOutput) where TPoint : Point <TPoint, TGeometry>, new() where TGeometry : Geometry, new()
{
var versionInfoEntry = zipOutput.CreateEntry("fileversion.txt", CompressionLevel.NoCompression);
versionInfoEntry.LastWriteTime = new DateTime(1980, 1, 1);
using var versionInfoEntryStream = versionInfoEntry.Open();
using var textWriter = new StreamWriter(versionInfoEntryStream, Encoding.UTF8);
textWriter.Write(FormplotHelper.GetFileFormatVersion(plot.FormplotType).ToString(2));
}