public static Tiling LoadTiling([NotNull] Stream stream, out IImage thumbnail)
{
if (stream == null) throw new ArgumentNullException(nameof(stream));
using (ZipArchive zip = new ZipArchive(stream, ZipArchiveMode.Read, true))
{
// Load the thumbnail
ZipArchiveEntry thumbnailEntry = zip.Entries.FirstOrDefault(e => e.Name.StartsWith("Thumbnail."));
if (thumbnailEntry == null)
thumbnail = null;
else
{
using (Stream thumbnailStream = thumbnailEntry.Open())
using (BinaryReader reader = new BinaryReader(thumbnailStream))
{
Debug.Assert(thumbnailEntry.Length < int.MaxValue);
byte[] data = reader.ReadBytes((int) thumbnailEntry.Length);
thumbnail = new MemoryImage(data);
}
}
// Load the template
ZipArchiveEntry templateEntry = zip.GetEntry("Template.xml");
if (templateEntry == null) throw new InvalidDataException("Template definition missing.");
XDocument doc;
using (Stream templateStream = templateEntry.Open())
doc = XDocument.Load(templateStream);
if (doc.Root == null)
throw new InvalidDataException("Template definition empty.");
Version version;
if (!Version.TryParse(doc.Root.Attribute("version")?.Value, out version))
throw new InvalidDataException("Invalid version number");
if (version > _version)
{
throw new InvalidDataException(
"The template was created for an earlier version of the application and cannot be loaded.");
}
// Deal with different versions if needed.
Template template = DeserializeTemplate(doc.Root);
_template.Value = template;
// Load images
Dictionary<string, IImage> imageByFileName = _imageByFileName.Value;
Debug.Assert(imageByFileName != null, "imageByFileName != null");
imageByFileName.Clear();
foreach (ZipArchiveEntry imgEntry in zip.Entries.Where(e => e.Name.StartsWith("Image")))
{
IImage image;
using (Stream imgStream = imgEntry.Open())
using (BinaryReader reader = new BinaryReader(imgStream))
{
Debug.Assert(imgEntry.Length < int.MaxValue);
byte[] data = reader.ReadBytes((int) imgEntry.Length);
image = new MemoryImage(data);
}
imageByFileName.Add(imgEntry.Name, image);
}
// Load the tiling
ZipArchiveEntry tilingEntry = zip.GetEntry("Tiling.xml");
if (tilingEntry == null) throw new InvalidDataException("Tiling definition missing.");
using (Stream tilingStream = tilingEntry.Open())
doc = XDocument.Load(tilingStream);
if (doc.Root == null)
throw new InvalidDataException("Tiling definition empty.");
if (!Version.TryParse(doc.Root.Attribute("version")?.Value, out version))
throw new InvalidDataException("Invalid version number");
if (version > _version)
{
throw new InvalidDataException(
"The template was created for an earlier version of the application and cannot be loaded.");
}
// Deal with different versions if needed.
Tiling tiling = DeserializeTiling(doc.Root, template);
imageByFileName.Clear();
Debug.Assert(_shapeByName.Value != null, "_shapeByName.Value != null");
_shapeByName.Value.Clear();
Debug.Assert(_linesByPartShapeId.Value != null, "_linesByPartShapeId.Value != null");
_linesByPartShapeId.Value.Clear();
_template.Value = null;
return tiling;
}
}
public static Template LoadTemplate([NotNull] Stream stream, out IImage thumbnail)
{
if (stream == null) throw new ArgumentNullException(nameof(stream));
using (ZipArchive zip = new ZipArchive(stream, ZipArchiveMode.Read, true))
{
// Load the thumbnail
ZipArchiveEntry thumbnailEntry = zip.Entries.FirstOrDefault(e => e.Name.StartsWith("Thumbnail."));
if (thumbnailEntry == null)
thumbnail = null;
else
{
using (Stream thumbnailStream = thumbnailEntry.Open())
using (BinaryReader reader = new BinaryReader(thumbnailStream))
{
Debug.Assert(thumbnailEntry.Length < int.MaxValue);
byte[] data = reader.ReadBytes((int) thumbnailEntry.Length);
thumbnail = new MemoryImage(data);
}
}
// Load the template
ZipArchiveEntry templateEntry = zip.GetEntry("Template.xml");
if (templateEntry == null) throw new InvalidDataException("Template definition missing.");
XDocument doc;
using (Stream templateStream = templateEntry.Open())
doc = XDocument.Load(templateStream);
if (doc.Root == null)
throw new InvalidDataException("Template definition empty.");
Version version;
if (!Version.TryParse(doc.Root.Attribute("version")?.Value, out version))
throw new InvalidDataException("Invalid version number");
if (version > _version)
{
throw new InvalidDataException(
"The template was created for an earlier version of the application and cannot be loaded.");
}
// Deal with different versions if needed.
return DeserializeTemplate(doc.Root);
}
}