MNT: Remove loadsave.which_analyze_type

Author: effigies

nibabel/loadsave.py

@@ -282,45 +282,3 @@ def read_img_data(img, prefer='scaled'):
         if prefer == 'scaled':
             return hdr.data_from_fileobj(fileobj)
         return hdr.raw_data_from_fileobj(fileobj)
-
-
-@deprecate_with_version('which_analyze_type deprecated.', '3.2', '4.0')
-def which_analyze_type(binaryblock):
-    """ Is `binaryblock` from NIfTI1, NIfTI2 or Analyze header?
-
-    Parameters
-    ----------
-    binaryblock : bytes
-        The `binaryblock` is 348 bytes that might be NIfTI1, NIfTI2, Analyze,
-        or None of the the above.
-
-    Returns
-    -------
-    hdr_type : str
-        * a nifti1 header (pair or single) -> return 'nifti1'
-        * a nifti2 header (pair or single) -> return 'nifti2'
-        * an Analyze header -> return 'analyze'
-        * None of the above -> return None
-
-    Notes
-    -----
-    Algorithm:
-
-    * read in the first 4 bytes from the file as 32-bit int ``sizeof_hdr``
-    * if ``sizeof_hdr`` is 540 or byteswapped 540 -> assume nifti2
-    * Check for 'ni1', 'n+1' magic -> assume nifti1
-    * if ``sizeof_hdr`` is 348 or byteswapped 348 assume Analyze
-    * Return None
-    """
-    from .nifti1 import header_dtype
-    hdr_struct = np.ndarray(shape=(), dtype=header_dtype, buffer=binaryblock)
-    bs_hdr_struct = hdr_struct.byteswap()
-    sizeof_hdr = hdr_struct['sizeof_hdr']
-    bs_sizeof_hdr = bs_hdr_struct['sizeof_hdr']
-    if 540 in (sizeof_hdr, bs_sizeof_hdr):
-        return 'nifti2'
-    if hdr_struct['magic'] in (b'ni1', b'n+1'):
-        return 'nifti1'
-    if 348 in (sizeof_hdr, bs_sizeof_hdr):
-        return 'analyze'
-    return None

nibabel/tests/test_image_load_save.py

@@ -29,7 +29,6 @@
 from ..volumeutils import native_code, swapped_code
 from ..optpkg import optional_package
 from ..spatialimages import SpatialImage
-from ..deprecator import ExpiredDeprecationError
 
 from numpy.testing import assert_array_equal, assert_array_almost_equal
 import pytest
@@ -271,14 +270,6 @@ def test_filename_save():
             shutil.rmtree(pth)
 
 
-def test_analyze_detection():
-    # Test detection of Analyze, Nifti1 and Nifti2
-    # Algorithm is as described in loadsave:which_analyze_type
-    hdr = Nifti1Header(b'\0' * 348, check=False)
-    with pytest.raises(ExpiredDeprecationError):
-        nils.which_analyze_type(hdr.binaryblock)
-
-
 def test_guessed_image_type():
     # Test whether we can guess the image type from example files
     with pytest.deprecated_call():