Version Upgrade 44 to 45

Includes test for changes made in CURA-6522

CURA-6522

plugins/VersionUpgrade/VersionUpgrade44to45/VersionUpgrade44to45.py

@@ -0,0 +1,69 @@
+import configparser
+from typing import Tuple, List
+import io
+from UM.VersionUpgrade import VersionUpgrade
+
+# Merged preferences: machine_head_polygon and machine_head_with_fans_polygon -> machine_head_with_fans_polygon
+# When both are present, machine_head_polygon will be removed
+# When only one of the two is present, it's value will be used
+
+
+class VersionUpgrade44to45(VersionUpgrade):
+    def getCfgVersion(self, serialised: str) -> int:
+        parser = configparser.ConfigParser(interpolation = None)
+        parser.read_string(serialised)
+        format_version = int(parser.get("general", "version"))  # Explicitly give an exception when this fails. That means that the file format is not recognised.
+        setting_version = int(parser.get("metadata", "setting_version", fallback = "0"))
+        return format_version * 1000000 + setting_version
+
+    ##  Upgrades Preferences to have the new version number.
+    #
+    #   This renames the renamed settings in the list of visible settings.
+    def upgradePreferences(self, serialized: str, filename: str) -> Tuple[List[str], List[str]]:
+        parser = configparser.ConfigParser(interpolation = None)
+        parser.read_string(serialized)
+
+        # Update version number.
+        parser["metadata"]["setting_version"] = "11"
+
+        result = io.StringIO()
+        parser.write(result)
+        return [filename], [result.getvalue()]
+
+    ##  Upgrades instance containers to have the new version
+    #   number.
+    #
+    #   This renames the renamed settings in the containers.
+    def upgradeInstanceContainer(self, serialized: str, filename: str) -> Tuple[List[str], List[str]]:
+        parser = configparser.ConfigParser(interpolation = None)
+        parser.read_string(serialized)
+
+        # Update version number.
+        parser["metadata"]["setting_version"] = "11"
+
+        if "values" in parser:
+            # merge machine_head_with_fans_polygon (preferred) and machine_head_polygon
+            if "machine_head_with_fans_polygon" in parser["values"]:
+                if "machine_head_polygon" in parser["values"]:
+                    del parser["values"]["machine_head_polygon"]
+            elif "machine_head_polygon" in parser["values"]:
+                parser["values"]["machine_head_with_fans_polygon"] = parser["values"]["machine_head_polygon"]
+                del parser["values"]["machine_head_polygon"]
+
+        result = io.StringIO()
+        parser.write(result)
+        return [filename], [result.getvalue()]
+
+    ##  Upgrades stacks to have the new version number.
+    def upgradeStack(self, serialized: str, filename: str) -> Tuple[List[str], List[str]]:
+        parser = configparser.ConfigParser(interpolation = None)
+        parser.read_string(serialized)
+
+        # Update version number.
+        if "metadata" not in parser:
+            parser["metadata"] = {}
+        parser["metadata"]["setting_version"] = "11"
+
+        result = io.StringIO()
+        parser.write(result)
+        return [filename], [result.getvalue()]