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WIP: generalize class for opening image #1314

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WIP: generalize class for opening image #1314

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8 changes: 6 additions & 2 deletions nibabel/fileholders.py
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,9 @@ class FileHolderError(Exception):
class FileHolder:
"""class to contain filename, fileobj and file position"""

# Default image opener class / callable
make_image_opener = ImageOpener

def __init__(
self,
filename: str | None = None,
Expand Down Expand Up @@ -68,10 +71,11 @@ def get_prepare_fileobj(self, *args, **kwargs) -> ImageOpener:
``self.pos``
"""
if self.fileobj is not None:
obj = ImageOpener(self.fileobj) # for context manager
# for context manager
obj = self.make_image_opener(self.fileobj)
obj.seek(self.pos)
elif self.filename is not None:
obj = ImageOpener(self.filename, *args, **kwargs)
obj = self.make_image_opener(self.filename, *args, **kwargs)
if self.pos != 0:
obj.seek(self.pos)
else:
Expand Down
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