private void LoadInternal(eOpenType xiOpenType, string xiFilename)
{
Chunk lNewRootChunk = null;
string lExceptionWhen = "opening file";
try
{
using (FileStream fs = File.OpenRead(xiFilename))
{
lExceptionWhen = "deserialising the file";
switch (xiOpenType)
{
case eOpenType.LevelBinary:
lNewRootChunk = new Level(fs);
break;
case eOpenType.UnknownBinary:
lNewRootChunk = new FileChunk(fs);
break;
case eOpenType.Mmv:
lNewRootChunk = new VersionList(fs);
break;
case eOpenType.Xml:
XmlSerializer xs = new XmlSerializer(typeof(Chunk));
lNewRootChunk = (Chunk)xs.Deserialize(fs);
break;
default: throw new Exception("unreachable case");
}
if (fs.Length != fs.Position)
{
//check the whole file has been read
throw new DeserialisationException(string.Format("Deserialisation terminated early at byte {0} of {1}", fs.Position, fs.Length));
}
}
}
catch (Exception err)
{
Trace.WriteLine(err);
MessageBox.Show(string.Format("Exception occurred while {0}: {1}", lExceptionWhen, err.Message), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
// level loaded OK, now fill tree:
RootChunk = lNewRootChunk;
mLocalSettings.LastOpenedFile = xiFilename;
mLocalSettings.LastOpenedType = xiOpenType;
mCurrentFile = xiFilename;
mCurrentFileMode = xiOpenType == eOpenType.Mmv ? eSaveMode.Mmv : xiOpenType == eOpenType.Xml ? eSaveMode.Xml : eSaveMode.Binary;
}
//this is a weaker test than TestSerialisationIsInvertible
//but has been left here as it's sometimes handy for debugging
private void TestBinaryUnkSerialisationIsInvertible(string xiFilename)
{
Console.Out.WriteLine("Testing file {0}", xiFilename);
using (Stream inStr = File.OpenRead(xiFilename))
{
FileChunk deser = new FileChunk();
deser.Deserialise(inStr);
MemoryStream memStr = new MemoryStream();
inStr.Seek(0, SeekOrigin.Begin);
DebugOutputStreamWithExpectations outStr = new DebugOutputStreamWithExpectations(inStr, memStr);
deser.Serialise(outStr);
inStr.Seek(0, SeekOrigin.Begin);
memStr.Seek(0, SeekOrigin.Begin);
Assert.IsTrue(StreamUtils.StreamsAreEqual(inStr, memStr));
}
}