52 lines
1.5 KiB
Python
52 lines
1.5 KiB
Python
import logging
|
|
import pathlib
|
|
import typing
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class DoesNotExist(OSError):
|
|
"""Indicates a path does not exist on the filesystem."""
|
|
|
|
def __init__(self, path: pathlib.Path):
|
|
super().__init__(path)
|
|
self.path = path
|
|
|
|
|
|
def expand_sequence(path: pathlib.Path) -> typing.Iterator[pathlib.Path]:
|
|
"""Expand a file sequence path into the actual file paths.
|
|
|
|
:param path: can be either a glob pattern (must contain a * character),
|
|
a directory, or the path of the first file in the sequence.
|
|
"""
|
|
|
|
if '*' in str(path): # assume it is a glob
|
|
import glob
|
|
log.debug('expanding glob %s', path)
|
|
for fname in sorted(glob.glob(str(path), recursive=True)):
|
|
yield pathlib.Path(fname)
|
|
return
|
|
|
|
if not path.exists():
|
|
raise DoesNotExist(path)
|
|
|
|
if path.is_dir():
|
|
log.debug('expanding directory %s', path)
|
|
yield from sorted(path.rglob('*'))
|
|
return
|
|
|
|
log.debug('expanding file sequence %s', path)
|
|
|
|
import string
|
|
stem_no_digits = path.stem.rstrip(string.digits)
|
|
if stem_no_digits == path.stem:
|
|
# Just a single file, no digits here.
|
|
yield path
|
|
return
|
|
|
|
# Return everything start starts with 'stem_no_digits' and ends with the
|
|
# same suffix as the first file. This may result in more files than used
|
|
# by Blender, but at least it shouldn't miss any.
|
|
pattern = '%s*%s' % (stem_no_digits, path.suffix)
|
|
yield from sorted(path.parent.glob(pattern))
|