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58 lines
2 KiB
Python
58 lines
2 KiB
Python
import os.path
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import clique
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import re
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import pyblish.api
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class ValidateSequenceFrames(pyblish.api.InstancePlugin):
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"""Ensure the sequence of frames is complete
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The files found in the folder are checked against the startFrame and
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endFrame of the instance. If the first or last file is not
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corresponding with the first or last frame it is flagged as invalid.
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Used regular expression pattern handles numbers in the file names
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(eg "Main_beauty.v001.1001.exr", "Main_beauty_v001.1001.exr",
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"Main_beauty.1001.1001.exr") but not numbers behind frames (eg.
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"Main_beauty.1001.v001.exr")
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"""
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order = pyblish.api.ValidatorOrder
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label = "Validate Sequence Frames"
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families = ["imagesequence", "render"]
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hosts = ["shell", "unreal"]
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def process(self, instance):
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representations = instance.data.get("representations")
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if not representations:
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return
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for repr in representations:
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repr_files = repr["files"]
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if isinstance(repr_files, str):
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repr_files = [repr_files]
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_, ext = os.path.splitext(repr_files[0])
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pattern = r"\D?(?P<index>(?P<padding>0*)\d+){}$".format(
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re.escape(ext))
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patterns = [pattern]
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collections, remainder = clique.assemble(
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repr_files, minimum_items=1, patterns=patterns)
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assert not remainder, "Must not have remainder"
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assert len(collections) == 1, "Must detect single collection"
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collection = collections[0]
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frames = list(collection.indexes)
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current_range = (frames[0], frames[-1])
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required_range = (instance.data["frameStart"],
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instance.data["frameEnd"])
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if current_range != required_range:
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raise ValueError(f"Invalid frame range: {current_range} - "
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f"expected: {required_range}")
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missing = collection.holes().indexes
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assert not missing, "Missing frames: %s" % (missing,)
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