private bool OpenFile(string filePath)
{
var retval = false;
var status = 0;
if (string.IsNullOrEmpty(filePath))
{
throw new ArgumentException("The file path cannot be a null or empty string!");
}
if (FilePath != null)
{
throw new InvalidOperationException("OpenFile cannot be called a again once a file has been opened!");
}
CFits.OpenFile(out _fitsPointer, filePath, CFits.READONLY, ref status);
Header = GetHeaderData();
Status = status;
if (status == 0)
{
FilePath = filePath;
retval = true;
}
return(retval);
}
public void CloseFile()
{
if (_fitsPointer != IntPtr.Zero)
{
var status = 0;
FilePath = null;
CFits.CloseFile(_fitsPointer, ref status);
_fitsPointer = IntPtr.Zero;
Status = status;
}
}
private FitsHeader GetHeaderData()
{
if (Status != 0)
{
return(null);
}
var status = 0;
var fitsHeader = new FitsHeader();
var ndx = 1;
while (true)
{
string keyName = null;
string keyValue = null;
string keyComment = null;
CFits.ReadHeaderRecord(_fitsPointer, ndx++, ref keyName, ref keyValue, ref keyComment, ref status);
if (status == (int)ErrorStatusCode.KEY_OUT_BOUNDS)
{
break;
}
else if (status != 0)
{
Status = status;
var errText = CFits.GetErrorStatus(status);
throw new Exception("FITS ReadHeaderRecord error - " + errText);
}
var keyUnits = "";
ExtractUnits(ref keyUnits, ref keyComment);
var item = new FitsHeaderItem(keyName, keyValue, keyUnits, keyComment);
fitsHeader.Add(item);
}
Header = fitsHeader;
return(fitsHeader);
}
public static string GetErrorText(int status)
{
return(CFits.GetErrorStatus(status));
}