77 lines
2.6 KiB
Python
Executable File
77 lines
2.6 KiB
Python
Executable File
# ***** BEGIN GPL LICENSE BLOCK *****
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#
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# ***** END GPL LICENCE BLOCK *****
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#
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# (c) 2018, Blender Foundation - Sybren A. Stüvel
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import logging
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import pathlib
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import typing
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log = logging.getLogger(__name__)
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class DoesNotExist(OSError):
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"""Indicates a path does not exist on the filesystem."""
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def __init__(self, path: pathlib.Path) -> None:
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super().__init__(path)
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self.path = path
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def expand_sequence(path: pathlib.Path) -> typing.Iterator[pathlib.Path]:
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"""Expand a file sequence path into the actual file paths.
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:param path: can be either a glob pattern (must contain a * character)
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or the path of the first file in the sequence.
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"""
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if "<UDIM>" in path.name: # UDIM tiles
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# Change <UDIM> marker to a glob pattern, then let the glob case handle it.
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# This assumes that all files that match the glob are actually UDIM
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# tiles; this could cause some false-positives.
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path = path.with_name(path.name.replace("<UDIM>", "*"))
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if "*" in str(path): # assume it is a glob
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import glob
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log.debug("expanding glob %s", path)
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for fname in sorted(glob.glob(str(path), recursive=True)):
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yield pathlib.Path(fname)
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return
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if not path.exists():
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raise DoesNotExist(path)
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if path.is_dir():
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yield path
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return
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log.debug("expanding file sequence %s", path)
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import string
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stem_no_digits = path.stem.rstrip(string.digits)
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if stem_no_digits == path.stem:
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# Just a single file, no digits here.
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yield path
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return
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# Return everything start starts with 'stem_no_digits' and ends with the
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# same suffix as the first file. This may result in more files than used
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# by Blender, but at least it shouldn't miss any.
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pattern = "%s*%s" % (stem_no_digits, path.suffix)
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yield from sorted(path.parent.glob(pattern))
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