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# -*- coding: utf-8 -*-
# Authors: Eric Larson <larson.eric.d@gmail.com>
#
# License: BSD (3-clause)
from collections import OrderedDict
from ..fixes import _get_args
from ..utils import _check_fname, logger
def what(fname):
"""Try to determine the type of the FIF file.
Parameters
----------
fname : str
The filename. Should end in .fif or .fif.gz.
Returns
-------
what : str | None
The type of the file. Will be 'unknown' if it could not be determined.
Notes
-----
.. versionadded:: 0.19
"""
from .fiff import read_raw_fif
from ..epochs import read_epochs
from ..evoked import read_evokeds
from ..preprocessing import read_ica
from ..forward import read_forward_solution
from ..minimum_norm import read_inverse_operator
from ..source_space import read_source_spaces
from ..bem import read_bem_solution, read_bem_surfaces
from ..cov import read_cov
from ..transforms import read_trans
from ..event import read_events
from ..proj import read_proj
from .meas_info import read_fiducials
_check_fname(fname, overwrite='read', must_exist=True)
checks = OrderedDict()
checks['raw'] = read_raw_fif
checks['ica'] = read_ica
checks['epochs'] = read_epochs
checks['evoked'] = read_evokeds
checks['forward'] = read_forward_solution
checks['inverse'] = read_inverse_operator
checks['src'] = read_source_spaces
checks['bem solution'] = read_bem_solution
checks['bem surfaces'] = read_bem_surfaces
checks['cov'] = read_cov
checks['transform'] = read_trans
checks['events'] = read_events
checks['proj'] = read_proj
checks['fiducials'] = read_fiducials
for what, func in checks.items():
args = _get_args(func)
kwargs = dict()
if 'preload' in args:
kwargs['preload'] = False
if 'verbose' in args:
kwargs['verbose'] = 'error'
try:
func(fname, **kwargs)
except Exception as exp:
logger.debug('Not %s: %s' % (what, exp))
else:
return what
return 'unknown'
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