Add version upgrade 4.1 to 4.2

CURA-6460

3 files changed, 146 insertions, 0 deletions

diff --git a/plugins/VersionUpgrade/VersionUpgrade41to42/VersionUpgrade41to42.py b/plugins/VersionUpgrade/VersionUpgrade41to42/VersionUpgrade41to42.py
new file mode 100644
index 0000000000..6458a8add8
--- /dev/null
+++ b/plugins/VersionUpgrade/VersionUpgrade41to42/VersionUpgrade41to42.py
@@ -0,0 +1,79 @@
+# Copyright (c) 2019 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+import configparser
+import io
+from typing import List, Tuple
+
+from UM.VersionUpgrade import VersionUpgrade
+
+_REMOVED_SETTING_KEYS = ["prime_tower_circular"]  # type: List[str]
+
+
+##  Upgrades configurations from the state they were in at version 4.0 to the
+#   state they should be in at version 4.2.
+class VersionUpgrade41to42(VersionUpgrade):
+    ##  Gets the version number from a CFG file in Uranium's 4.0 format.
+    #
+    #   Since the format may change, this is implemented for the 4.0 format only
+    #   and needs to be included in the version upgrade system rather than
+    #   globally in Uranium.
+    #
+    #   \param serialised The serialised form of a CFG file.
+    #   \return The version number stored in the CFG file.
+    #   \raises ValueError The format of the version number in the file is
+    #   incorrect.
+    #   \raises KeyError The format of the file is incorrect.
+    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 instance containers to have the new version
+    #   number.
+    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["general"]["version"] = "4"
+        parser["metadata"]["setting_version"] = "8"
+
+        if "values" in parser:
+            for key in _REMOVED_SETTING_KEYS:
+                if key in parser["values"]:
+                    del parser["values"][key]
+
+        result = io.StringIO()
+        parser.write(result)
+        return [filename], [result.getvalue()]
+
+    ##  Upgrades Preferences to have the new version number.
+    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["general"]["version"] = "6"
+        if "metadata" not in parser:
+            parser["metadata"] = {}
+        parser["metadata"]["setting_version"] = "8"
+
+        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.
+        parser["general"]["version"] = "4"
+        parser["metadata"]["setting_version"] = "8"
+
+        result = io.StringIO()
+        parser.write(result)
+        return [filename], [result.getvalue()]
diff --git a/plugins/VersionUpgrade/VersionUpgrade41to42/__init__.py b/plugins/VersionUpgrade/VersionUpgrade41to42/__init__.py
new file mode 100644
index 0000000000..28bea715dd
--- /dev/null
+++ b/plugins/VersionUpgrade/VersionUpgrade41to42/__init__.py
@@ -0,0 +1,59 @@
+# Copyright (c) 2019 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from typing import Any, Dict, TYPE_CHECKING
+
+from . import VersionUpgrade41to42
+
+if TYPE_CHECKING:
+    from UM.Application import Application
+
+upgrade = VersionUpgrade41to42.VersionUpgrade41to42()
+
+def getMetaData() -> Dict[str, Any]:
+    return {
+        "version_upgrade": {
+            # From                           To                              Upgrade function
+            ("preferences", 6000007):        ("preferences", 6000008, upgrade.upgradePreferences),
+            ("machine_stack", 4000007):      ("machine_stack", 4000008,      upgrade.upgradeStack),
+            ("extruder_train", 4000007):     ("extruder_train", 4000008,     upgrade.upgradeStack),
+            ("definition_changes", 4000007): ("definition_changes", 4000008, upgrade.upgradeInstanceContainer),
+            ("quality_changes", 4000007):    ("quality_changes", 4000008,    upgrade.upgradeInstanceContainer),
+            ("quality", 4000007):            ("quality", 4000008,            upgrade.upgradeInstanceContainer),
+            ("user", 4000007):               ("user", 4000008,               upgrade.upgradeInstanceContainer),
+        },
+        "sources": {
+            "preferences": {
+                "get_version": upgrade.getCfgVersion,
+                "location": {"."}
+            },
+            "machine_stack": {
+                "get_version": upgrade.getCfgVersion,
+                "location": {"./machine_instances"}
+            },
+            "extruder_train": {
+                "get_version": upgrade.getCfgVersion,
+                "location": {"./extruders"}
+            },
+            "definition_changes": {
+                "get_version": upgrade.getCfgVersion,
+                "location": {"./definition_changes"}
+            },
+            "quality_changes": {
+                "get_version": upgrade.getCfgVersion,
+                "location": {"./quality_changes"}
+            },
+            "quality": {
+                "get_version": upgrade.getCfgVersion,
+                "location": {"./quality"}
+            },
+            "user": {
+                "get_version": upgrade.getCfgVersion,
+                "location": {"./user"}
+            }
+        }
+    }
+
+
+def register(app: "Application") -> Dict[str, Any]:
+    return { "version_upgrade": upgrade }
diff --git a/plugins/VersionUpgrade/VersionUpgrade41to42/plugin.json b/plugins/VersionUpgrade/VersionUpgrade41to42/plugin.json
new file mode 100644
index 0000000000..9f8edea286
--- /dev/null
+++ b/plugins/VersionUpgrade/VersionUpgrade41to42/plugin.json
@@ -0,0 +1,8 @@
+{
+    "name": "Version Upgrade 4.1 to 4.2",
+    "author": "Ultimaker B.V.",
+    "version": "1.0.0",
+    "description": "Upgrades configurations from Cura 4.1 to Cura 4.2.",
+    "api": "6.0",
+    "i18n-catalog": "cura"
+}