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# Copyright (c) 2018 Ultimaker B.V.
# libCharon is released under the terms of the LGPLv3 or higher.
from collections import OrderedDict
from Charon.OpenMode import OpenMode
from Charon.filetypes.GCodeFile import GCodeFile
from Charon.filetypes.OpenPackagingConvention import OpenPackagingConvention
## A container file type that contains multiple 3D-printing related files that belong together.
class UltimakerFormatPackage(OpenPackagingConvention):
# Where the global metadata file is.
_global_metadata_file = "/Metadata/UFP_Global.json"
# Unique identifier of the relationship type that relates UFP metadata to files.
_metadata_relationship_type = "http://schemas.ultimaker.org/package/2018/relationships/ufp_metadata"
# Where the global metadata file is.
global_metadata_file = "/Metadata/UFP_Global.json"
# Unique identifier of the relationship type that relates UFP metadata to files.
metadata_relationship_type = "http://schemas.ultimaker.org/package/2018/relationships/ufp_metadata"
# Virtual path aliases. Keys are regex. Order matters!
_aliases = OrderedDict([
(r"^/preview/default", "/Metadata/thumbnail.png"),
(r"^/preview", "/Metadata/thumbnail.png"),
(r"^/toolpath/default", "/3D/model.gcode"),
(r"^/toolpath", "/3D/model.gcode"),
])
mime_type = "application/x-ufp"
## Initialises the fields of this class.
def __init__(self):
super().__init__()
## When loading a file, read its metadata from the archive.
#
# This depends on the relations! Read the relations first!
def _readMetadata(self) -> None:
super()._readMetadata()
if self._mode != OpenMode.WriteOnly and not self.getMetadata("/3D/model.gcode"):
try:
# Check if the G-code file actually exists in the package.
self._zipfile.getinfo("/3D/model.gcode")
except KeyError:
return
gcode_stream = self._zipfile.open("/3D/model.gcode")
header_data = GCodeFile.parseHeader(gcode_stream, prefix="/3D/model.gcode/")
self._metadata.update(header_data)
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