/// <summary>
/// Loads an archive from a file
/// </summary>
/// <param name="path">Path to the file</param>
/// <returns>Loaded Archive</returns>
/// <exception cref="System.IO.FileNotFoundException"/>
/// <exception cref="System.IO.InvalidDataException"/>
public static GraphicArchive Load(string path)
{
if (path == null)
{
throw new ArgumentNullException("path");
}
if (File.Exists(path))
{
GraphicArchive archive = null;
using (FileStream stream = File.OpenRead(path))
{
archive = Load(stream);
archive.FileName = path;
}
if (archive != null && archive.ZoomFactor == ZoomFactor.Zoom1)
{
string animationPath = path.Remove(path.Length - 3) + "bnm";
if (File.Exists(animationPath))
{
archive.Animation = Animation.Load(animationPath);
}
}
return(archive);
}
else
{
throw new FileNotFoundException("File not found", path);
}
}
private static GraphicArchive Load(FileStream path)
{
using (BinaryReader br = new BinaryReader(path, Encoding.Unicode))
{
while (br.ReadByte() != Constants.HeaderTextTerminator)
{
}
byte[] read = br.ReadBytes(3);
if (read[0] != 85 || read[1] != 90 || read[2] != 88) // 'UZX' as ASCII characters
{
throw new InvalidDataException("wrong identification string");
}
byte zoomFactor = (byte)(br.ReadByte() - 48); // zoomFactor number is stored as ASCII. -48 will 'convert' this to int
int elementNumber;
List <ArchiveElement> graphics = new List <ArchiveElement>();
while (true)
{
elementNumber = br.ReadInt32();
if (elementNumber == -1)
{
break;
}
br.ReadInt32(); //skipping data (bauform)
br.ReadInt32(); //skipping data (fwSig)
int animationPhase = br.ReadInt32(); //AnimationPhase
int alternative = br.ReadInt32(); //Alternative
ArchiveElement archiveElement = new ArchiveElement(elementNumber, animationPhase, alternative, null); //Graphic loaded later
archiveElement.SeekPosition = ((int)(br.BaseStream.Position + 4 + br.ReadInt32())); // +4 Used for unknown reasons. Possibly because of C/C# incompatibility
graphics.Add(archiveElement);
}
foreach (var item in graphics)
{
br.BaseStream.Seek(item.SeekPosition + sizeof(int) * 7, SeekOrigin.Begin); // sizeof(int) * 7 => Skip 7 integer-sized fields
item.Graphic = Graphic.Load(br);
}
GraphicArchive archive;
switch (zoomFactor)
{
case 1:
case 2:
case 4:
ZoomFactor f = (ZoomFactor)zoomFactor;
archive = new GraphicArchive(f);
break;
default:
throw new InvalidDataException("Invalid ZoomFactor");
}
archive.graphics = graphics;
return(archive);
}
}
