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+# Copyright (c) 2018 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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+import io
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+
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+from UM.VersionUpgrade import VersionUpgrade
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+
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+
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+## Upgrades configurations from the state they were in at version 3.3 to the
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+# state they should be in at version 3.4.
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+class VersionUpgrade34to40(VersionUpgrade):
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+
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+ ## Gets the version number from a CFG file in Uranium's 3.3 format.
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+ #
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+ # Since the format may change, this is implemented for the 3.3 format only
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+ # and needs to be included in the version upgrade system rather than
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+ # globally in Uranium.
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+ #
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+ # \param serialised The serialised form of a CFG file.
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+ # \return The version number stored in the CFG file.
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+ # \raises ValueError The format of the version number in the file is
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+ # incorrect.
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+ # \raises KeyError The format of the file is incorrect.
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+ def getCfgVersion(self, serialised):
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+ parser = configparser.ConfigParser(interpolation = None)
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+ parser.read_string(serialised)
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+ format_version = int(parser.get("general", "version")) #Explicitly give an exception when this fails. That means that the file format is not recognised.
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+ setting_version = int(parser.get("metadata", "setting_version", fallback = 0))
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+ return format_version * 1000000 + setting_version
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+
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+ ## Upgrades Preferences to have the new version number.
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+ def upgradePreferences(self, serialized, filename):
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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["general"]["version"] = "4"
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+ if "metadata" not in parser:
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+ parser["metadata"] = {}
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+ parser["metadata"]["setting_version"] = "5"
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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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+ ## Upgrades stacks to have the new version number.
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+ def upgradeStack(self, serialized, filename):
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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["general"]["version"] = "4"
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+ parser["metadata"]["setting_version"] = "5"
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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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+ ## Upgrades instance containers to have the new version
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+ # number.
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+ def upgradeInstanceContainer(self, serialized, filename):
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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["general"]["version"] = "4"
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+ parser["metadata"]["setting_version"] = "5"
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+
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+ self._resetConcentric3DInfillPattern(parser)
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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 _resetConcentric3DInfillPattern(self, parser):
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+ if "values" not in parser:
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+ return
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+
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+ # Reset the patterns which are concentric 3d
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+ for key in ("infill_pattern",
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+ "support_pattern",
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+ "support_interface_pattern",
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+ "support_roof_pattern",
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+ "support_bottom_pattern",
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+ ):
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+ if key not in parser["values"]:
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+ continue
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+ if parser["values"][key] == "concentric_3d":
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+ del parser["values"][key]
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+
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Lipu Fei