/// <summary>
/// Open file for reading.
/// </summary>
/// <returns>The opened file.</returns>
/// <param name="Path">Path to the file.</param>
/// <param name="numberGetter">Delegate that generates the image numbers in a MEF FITS.</param>
public static MMapFitsFile OpenReadFile(string Path, MEFImageNumberGetter numberGetter = null)
{
FileInfo info = new FileInfo(Path);
MemoryMappedFile mmap = MemoryMappedFile.CreateFromFile(Path, FileMode.Open, Guid.NewGuid().ToString(), 0, MemoryMappedFileAccess.Read);
Stream stream = mmap.CreateViewStream(0, 0, MemoryMappedFileAccess.Read);
FitsFileBuilder builder = HeaderIO.ReadFileHeaders(stream, info.Length, numberGetter);
stream.Dispose();
return(new MMapFitsFile(Path, false, numberGetter, builder, mmap, MemoryMappedFileAccess.Read));
}
/// <summary>
/// Opens a file from the given stream.
/// </summary>
/// <returns>The opened file.</returns>
/// <param name="str">Input stream.</param>
/// <param name="Length">Data length.</param>
/// <param name="Path">Path to the data.</param>
/// <param name="numberGetter">MEF naming policy.</param>
public static NSStreamFitsFile OpenFile(Stream str, int Length, string Path, MEFImageNumberGetter numberGetter = null)
{
byte[] Data = new byte[Length];
str.Read(Data, 0, Data.Length);
FitsFileBuilder Headers;
using (MemoryStream ms = new MemoryStream(Data))
Headers = HeaderIO.ReadFileHeaders(ms, Length, numberGetter);
return(new NSStreamFitsFile(Data, Path, false, numberGetter, Headers));
}