Method getHDU

ij/src/main/java/ij/plugin/FITS_Reader.java:1237–1262

Create an OpenDialog, and read in the selected FITS file.

(String path)

	 * Create an {@link OpenDialog}, and read in the selected FITS file.
	 */
	private PostFitsRead getHDU(String path) throws FitsException, IOException {
		OpenDialog od = new OpenDialog("Open FITS...", path);
		directory = od.getDirectory();
		fileName = od.getFileName();
		if (fileName == null) {
			throw new FitsException("Null filename.");
		}
		IJ.showStatus("Opening: " + directory + fileName);
		//IJ.log("Opening: " + directory + fileName);

		FitsFactory.setAllowHeaderRepairs(true);

		var fr = getFitsFile(path);
		if (fr.hasErrored) return null;
		Fits f = null;
		try {
			f = fr.fits;
			var hdus = f.read();
			fr.close();

			return new PostFitsRead(f, hdus);
		} catch (FitsException e) {
			closeThing(f);
			throw e;
		}
	}

	/**
	 * Opens a FITS file from the path. If it is in a zip file, it will open the zip