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"""Generic wrapper function read_raw for specific read_raw_xxx readers."""
# Authors: The MNE-Python contributors.
# License: BSD-3-Clause
# Copyright the MNE-Python contributors.
from functools import partial
from pathlib import Path
from ..utils import fill_doc
from .base import BaseRaw
def _read_unsupported(fname, **kwargs):
ext = "".join(Path(fname).suffixes)
msg = f"Unsupported file type ({ext})."
suggest = kwargs.get("suggest")
if suggest is not None:
msg += f" Try reading a {suggest} file instead."
msg += " Consider using a dedicated reader function for more options."
raise ValueError(msg)
# supported read file formats
def _get_supported():
from . import (
read_raw_ant,
read_raw_artemis123,
read_raw_bdf,
read_raw_boxy,
read_raw_brainvision,
read_raw_cnt,
read_raw_ctf,
read_raw_curry,
read_raw_edf,
read_raw_eeglab,
read_raw_egi,
read_raw_eximia,
read_raw_eyelink,
read_raw_fieldtrip,
read_raw_fif,
read_raw_fil,
read_raw_gdf,
read_raw_kit,
read_raw_nedf,
read_raw_nicolet,
read_raw_nihon,
read_raw_nirx,
read_raw_nsx,
read_raw_persyst,
read_raw_snirf,
)
return {
".edf": dict(EDF=read_raw_edf),
".eeg": dict(NihonKoden=read_raw_nihon),
".bdf": dict(BDF=read_raw_bdf),
".gdf": dict(GDF=read_raw_gdf),
".vhdr": dict(brainvision=read_raw_brainvision),
".ahdr": dict(brainvision=read_raw_brainvision),
".fif": dict(FIF=read_raw_fif),
".fif.gz": dict(FIF=read_raw_fif),
".set": dict(EEGLAB=read_raw_eeglab),
".cnt": dict(CNT=read_raw_cnt, ANT=read_raw_ant),
".mff": dict(EGI=read_raw_egi),
".nxe": dict(eximia=read_raw_eximia),
".hdr": dict(NIRx=read_raw_nirx),
".snirf": dict(SNIRF=read_raw_snirf),
".mat": dict(fieldtrip=read_raw_fieldtrip),
".bin": {
"ARTEMIS": read_raw_artemis123,
"UCL FIL OPM": read_raw_fil,
},
".data": dict(Nicolet=read_raw_nicolet),
".sqd": dict(KIT=read_raw_kit),
".con": dict(KIT=read_raw_kit),
".ds": dict(CTF=read_raw_ctf),
".txt": dict(BOXY=read_raw_boxy),
# Curry
".dat": dict(CURRY=read_raw_curry),
".dap": dict(CURRY=read_raw_curry),
".rs3": dict(CURRY=read_raw_curry),
".cdt": dict(CURRY=read_raw_curry),
".cdt.dpa": dict(CURRY=read_raw_curry),
".cdt.cef": dict(CURRY=read_raw_curry),
".cef": dict(CURRY=read_raw_curry),
# NEDF
".nedf": dict(NEDF=read_raw_nedf),
# EyeLink
".asc": dict(EyeLink=read_raw_eyelink),
".ns3": dict(NSx=read_raw_nsx),
".lay": dict(Persyst=read_raw_persyst),
}
# known but unsupported file formats
_suggested = {
".vmrk": dict(brainvision=partial(_read_unsupported, suggest=".vhdr")),
".amrk": dict(brainvision=partial(_read_unsupported, suggest=".ahdr")),
}
# all known file formats
def _get_readers():
return {**_get_supported(), **_suggested}
def split_name_ext(fname):
"""Return name and supported file extension."""
maxsuffixes = max(ext.count(".") for ext in _get_supported())
suffixes = Path(fname).suffixes
for si in range(-maxsuffixes, 0):
ext = "".join(suffixes[si:]).lower()
if ext in _get_readers():
return Path(fname).name[: -len(ext)], ext
return fname, None # unknown file extension
@fill_doc
def read_raw(fname, *, preload=False, verbose=None, **kwargs) -> BaseRaw:
"""Read raw file.
This function is a convenient wrapper for readers defined in `mne.io`. The
correct reader is automatically selected based on the detected file format.
All function arguments are passed to the respective reader.
The following readers are currently supported:
* `~mne.io.read_raw_ant`
* `~mne.io.read_raw_artemis123`
* `~mne.io.read_raw_bdf`
* `~mne.io.read_raw_boxy`
* `~mne.io.read_raw_brainvision`
* `~mne.io.read_raw_cnt`
* `~mne.io.read_raw_ctf`
* `~mne.io.read_raw_curry`
* `~mne.io.read_raw_edf`
* `~mne.io.read_raw_eeglab`
* `~mne.io.read_raw_egi`
* `~mne.io.read_raw_eximia`
* `~mne.io.read_raw_eyelink`
* `~mne.io.read_raw_fieldtrip`
* `~mne.io.read_raw_fif`
* `~mne.io.read_raw_fil`
* `~mne.io.read_raw_gdf`
* `~mne.io.read_raw_kit`
* `~mne.io.read_raw_nedf`
* `~mne.io.read_raw_nicolet`
* `~mne.io.read_raw_nihon`
* `~mne.io.read_raw_nirx`
* `~mne.io.read_raw_nsx`
* `~mne.io.read_raw_persyst`
* `~mne.io.read_raw_snirf`
Parameters
----------
fname : path-like
Name of the file to read.
%(preload)s
%(verbose)s
**kwargs
Additional keyword arguments to pass to the underlying reader. For
details, see the arguments of the reader for the respective file
format.
Returns
-------
raw : mne.io.Raw
Raw object.
"""
_, ext = split_name_ext(fname)
kwargs["verbose"] = verbose
kwargs["preload"] = preload
readers = _get_readers()
if ext not in readers:
_read_unsupported(fname)
these_readers = list(readers[ext].values())
for reader in these_readers:
try:
return reader(fname, **kwargs)
except Exception:
if len(these_readers) == 1:
raise
else:
choices = "\n".join(
f"mne.io.{func.__name__.ljust(20)} ({kind})"
for kind, func in readers[ext].items()
)
raise RuntimeError(
"Could not read file using any of the possible readers for "
f"extension {ext}. Consider trying to read the file directly with "
f"one of:\n{choices}"
)
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