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# Copyright (c) 2018 Ultimaker B.V.
# Cura is released under the terms of the LGPLv3 or higher.
import gzip
from UM.Mesh.MeshReader import MeshReader #The class we're extending/implementing.
from UM.MimeTypeDatabase import MimeTypeDatabase, MimeType #To add the .gcode.gz files to the MIME type database.
from UM.PluginRegistry import PluginRegistry
## A file reader that reads gzipped g-code.
#
# If you're zipping g-code, you might as well use gzip!
class GCodeGzReader(MeshReader):
def __init__(self) -> None:
super().__init__()
MimeTypeDatabase.addMimeType(
MimeType(
name = "application/x-cura-compressed-gcode-file",
comment = "Cura Compressed GCode File",
suffixes = ["gcode.gz"]
)
)
self._supported_extensions = [".gcode.gz"]
def _read(self, file_name):
with open(file_name, "rb") as file:
file_data = file.read()
uncompressed_gcode = gzip.decompress(file_data).decode("utf-8")
PluginRegistry.getInstance().getPluginObject("GCodeReader").preReadFromStream(uncompressed_gcode)
result = PluginRegistry.getInstance().getPluginObject("GCodeReader").readFromStream(uncompressed_gcode, file_name)
return result
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