/// <summary>
/// Backup the project, only works if loaded from a file
/// </summary>
public static void Backup()
{
CANAPEProject currProject = CurrentProject;
if ((currProject != null) && (currProject._fileName != null))
{
string tempName = Path.ChangeExtension(currProject._fileName, ".autobak.canape");
try
{
using (Stream stm = File.Open(tempName, FileMode.Create, FileAccess.ReadWrite))
{
WriteFileVersion(GeneralUtils.GetCanapeVersion(), stm);
BinaryFormatter formatter = new BinaryFormatter(null, new StreamingContext(StreamingContextStates.File));
formatter.Serialize(stm, currentProject);
}
}
catch (Exception)
{
// We didn't save, delete file
try
{
File.Delete(tempName);
}
catch (IOException)
{
}
catch (UnauthorizedAccessException)
{
}
}
}
}
/// <summary>
/// Load a project from a file
/// </summary>
/// <param name="stm">The stream</param>
/// <param name="fileName">The filename to use (can be null)</param>
/// <param name="verifyVersion">Set true to verify the version being opened match this canape</param>
public static void Load(Stream stm, string fileName, bool verifyVersion)
{
// If an empty stream
if (stm.Length == 0)
{
New();
}
else
{
Version ver = ReadFileHeader(stm);
bool compressed = true;
if (verifyVersion)
{
if (ver.CompareTo(GeneralUtils.GetCanapeVersion()) != 0)
{
throw new InvalidVersionException(ver);
}
}
if (stm.ReadByte() == 0x1F)
{
compressed = true;
}
else
{
compressed = false;
}
stm.Position = stm.Position - 1;
using (Stream inStream = compressed ? new GZipStream(stm, CompressionMode.Decompress, false) : stm)
{
BinaryFormatter formatter = CreateFormatter(ver);
CANAPEProject newProject = (CANAPEProject)formatter.Deserialize(inStream);
newProject._fileName = fileName;
newProject._globalMeta = new MetaDictionary();
currentProject = newProject;
if (ProjectLoaded != null)
{
ProjectLoaded.Invoke(currentProject, new EventArgs());
}
}
}
}
/// <summary>
/// Load a project from a file
/// </summary>
/// <param name="stm">The stream</param>
/// <param name="fileName">The filename to use (can be null)</param>
/// <param name="verifyVersion">Set true to verify the version being opened match this canape</param>
/// <param name="secure">Attemps to make the load secure, not likely to succeed</param>
public static void Load(Stream stm, string fileName, bool verifyVersion, bool secure)
{
// If an empty stream
if (stm.Length == 0)
{
New();
}
else
{
Version ver = ReadFileHeader(stm);
bool compressed = true;
if (verifyVersion)
{
if (ver.CompareTo(GeneralUtils.GetCanapeVersion()) != 0)
{
throw new InvalidVersionException(ver);
}
}
if (stm.ReadByte() == 0x1F)
{
compressed = true;
}
else
{
compressed = false;
}
stm.Position = stm.Position - 1;
using (Stream inStream = compressed ? new GZipStream(stm, CompressionMode.Decompress, false) : stm)
{
BinaryFormatter formatter = CreateFormatter(ver, secure);
CANAPEProject newProject = null;
// Note that all this is going to do is prevent anything during
// direct load of objects and scripts, it won't do anything against anything else
if (secure)
{
try
{
PermissionSet ps = new PermissionSet(PermissionState.None);
ps.PermitOnly();
newProject = (CANAPEProject)formatter.UnsafeDeserialize(inStream, null);
}
finally
{
CodeAccessPermission.RevertPermitOnly();
}
}
else
{
newProject = (CANAPEProject)formatter.Deserialize(inStream);
}
newProject._fileName = fileName;
newProject._globalMeta = new MetaDictionary();
currentProject = newProject;
if (ProjectLoaded != null)
{
ProjectLoaded.Invoke(currentProject, new EventArgs());
}
}
}
}
/// <summary>
/// Create a new document
/// </summary>
public static void New()
{
currentProject = new CANAPEProject();
currentProject._isNew = true;
}
