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+# Copyright (c) 2020 Ultimaker B.V.
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+# Cura is released under the terms of the LGPLv3 or higher.
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+
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+import configparser
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+from typing import Tuple, List
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+import io
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+from UM.VersionUpgrade import VersionUpgrade
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+
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+class VersionUpgrade462to47(VersionUpgrade):
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+ def upgradePreferences(self, serialized: str, filename: str) -> Tuple[List[str], List[str]]:
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+ """
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+ Upgrades preferences to have the new version number.
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+ :param serialized: The original contents of the preferences file.
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+ :param filename: The file name of the preferences file.
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+ :return: A list of new file names, and a list of the new contents for
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+ those files.
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+ """
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+ parser = configparser.ConfigParser(interpolation = None)
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+ parser.read_string(serialized)
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+
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+ # Update version number.
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+ parser["metadata"]["setting_version"] = "15"
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+
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+ result = io.StringIO()
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+ parser.write(result)
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+ return [filename], [result.getvalue()]
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+
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+ def upgradeInstanceContainer(self, serialized: str, filename: str) -> Tuple[List[str], List[str]]:
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+ """
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+ Upgrades instance containers to have the new version number.
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+
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+ This changes the maximum deviation setting if that setting was present
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+ in the profile.
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+ :param serialized: The original contents of the instance container.
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+ :param filename: The original file name of the instance container.
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+ :return: A list of new file names, and a list of the new contents for
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+ those files.
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+ """
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+ parser = configparser.ConfigParser(interpolation = None, comment_prefixes = ())
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+ parser.read_string(serialized)
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+
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+ # Update version number.
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+ parser["metadata"]["setting_version"] = "15"
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+
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+ if "values" in parser:
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+ # Maximum Deviation's effect was corrected. Previously the deviation
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+ # ended up being only half of what the user had entered. This was
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+ # fixed in Cura 4.7 so there we need to halve the deviation that the
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+ # user had entered.
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+ #
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+ # This got accidentally merged in Cura 4.6.0. In 4.6.2 we removed
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+ # that. In 4.7 it's not unmerged, so there we need to revert all
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+ # that again.
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+ if "meshfix_maximum_deviation" in parser["values"]:
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+ maximum_deviation = parser["values"]["meshfix_maximum_deviation"]
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+ if maximum_deviation.startswith("="):
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+ maximum_deviation = maximum_deviation[1:]
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+ maximum_deviation = "=(" + maximum_deviation + ") / 2"
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+ parser["values"]["meshfix_maximum_deviation"] = maximum_deviation
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+
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+ result = io.StringIO()
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+ parser.write(result)
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+ return [filename], [result.getvalue()]
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+
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+ def upgradeStack(self, serialized: str, filename: str) -> Tuple[List[str], List[str]]:
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+ """
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+ Upgrades stacks to have the new version number.
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+ :param serialized: The original contents of the stack.
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+ :param filename: The original file name of the stack.
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+ :return: A list of new file names, and a list of the new contents for
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+ those files.
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+ """
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+ parser = configparser.ConfigParser(interpolation = None)
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+ parser.read_string(serialized)
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+
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+ # Update version number.
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+ if "metadata" not in parser:
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+ parser["metadata"] = {}
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+ parser["metadata"]["setting_version"] = "15"
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+
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+ result = io.StringIO()
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+ parser.write(result)
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+ return [filename], [result.getvalue()]
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