public Stream ReadDataDirectory(ImageDataDirectory directory)
{
if (directory == null)
{
throw new ArgumentNullException(nameof(directory));
}
if (directory.VirtualAddress == 0 || directory.Size == 0)
{
throw new ArgumentOutOfRangeException(nameof(directory), "Directory does not contain data.");
}
return(_file.CreateViewStream(directory.VirtualAddress, directory.Size, MemoryMappedFileAccess.Read));
}
private static IReadOnlyDictionary <ImageDataDirectoryEntry, ImageDataDirectory> ReadDirectoryEntries(MemoryMappedViewAccessor view, long location, int count)
{
var dictionary = new Dictionary <ImageDataDirectoryEntry, ImageDataDirectory>();
var dataDirectories = new IMAGE_DATA_DIRECTORY[count];
view.ReadArray(location, dataDirectories, 0, dataDirectories.Length);
for (var i = 0; i < dataDirectories.Length; i++)
{
var entry = new ImageDataDirectory
{
Size = dataDirectories[i].Size,
VirtualAddress = dataDirectories[i].VirtualAddress
};
dictionary.Add((ImageDataDirectoryEntry)i, entry);
}
return(dictionary);
}
