private void ReadAssociatedFileName(string cacheControlFilePath, out PresentDiskDispatcher.AssociatedFileType associatedFileType, out string associatedFileName, out long cacheControlFileLength)
{
Stream stream = new FileStream(cacheControlFilePath, FileMode.Open, FileAccess.Read);
using (stream)
{
cacheControlFileLength = stream.Length;
byte[] array = new byte[1];
using (stream)
{
int num = stream.Read(array, 0, 1);
if (num != 1)
{
throw new IOException("No type field at beginning of file.");
}
associatedFileType = (PresentDiskDispatcher.AssociatedFileType)array[0];
PresentDiskDispatcher.AssociatedFileType associatedFileType2 = associatedFileType;
if (associatedFileType2 != PresentDiskDispatcher.AssociatedFileType.Image)
{
throw new IOException("Unrecognized type field.");
}
string text = new StreamReader(stream).ReadToEnd();
associatedFileName = text;
}
}
}
public Present ReadObject(string path, out long length)
{
PresentDiskDispatcher.AssociatedFileType associatedFileType;
string text;
this.ReadAssociatedFileName(path, out associatedFileType, out text, out length);
D.Assert(associatedFileType == PresentDiskDispatcher.AssociatedFileType.Image);
length += PresentDiskDispatcher.FileLength(text);
GDIBigLockedImage image = GDIBigLockedImage.FromFile(text);
return(new ImageRef(new ImageRefCounted(image)));
}
public long CacheFileLength(string cacheControlFilePath)
{
PresentDiskDispatcher.AssociatedFileType associatedFileType;
string text;
long num;
this.ReadAssociatedFileName(cacheControlFilePath, out associatedFileType, out text, out num);
long num2 = 0L;
if (text != null)
{
num2 = PresentDiskDispatcher.FileLength(text);
}
return(num + num2);
}
public void WriteObject(Present present, string path, out long length)
{
if (!(present is ImageRef))
{
if (!this.complainedSet.ContainsKey(present.GetType()))
{
this.complainedSet[present.GetType()] = true;
D.Sayf(0, "No support for disk streams for type {0}", new object[]
{
present.GetType()
});
}
length = 0L;
return;
}
GDIBigLockedImage image = ((ImageRef)present).image;
string text = path + "." + PresentDiskDispatcher.outputExtension(image.RawFormat);
if (File.Exists(text))
{
throw new WriteObjectFailedException(text, "file exists", null);
}
try
{
image.Save(text);
}
catch (Exception innerEx)
{
throw new WriteObjectFailedException(text, "exception", innerEx);
}
Stream stream = new FileStream(path, FileMode.Create, FileAccess.Write);
stream.Write(new byte[]
{
0
}, 0, 1);
StreamWriter streamWriter = new StreamWriter(stream);
streamWriter.Write(text);
streamWriter.Flush();
length = PresentDiskDispatcher.FileLength(text) + stream.Length;
stream.Close();
}
