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5358dfe2d6
This code was more or less copied from the writer. It requires regular expressions and the application, but I didn't take the imports along. Contributes to issue CURA-34.
46 lines
2.5 KiB
Python
46 lines
2.5 KiB
Python
# Copyright (c) 2015 Ultimaker B.V.
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# Cura is released under the terms of the AGPLv3 or higher.
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from UM.Application import Application #To get the current profile that should be updated with the settings from the g-code.
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from UM.Mesh.MeshReader import MeshReader
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import re #Regular expressions for parsing escape characters in the settings.
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## A class that reads profile data from g-code files.
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#
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# It reads the profile data from g-code files and stores the profile as a new
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# profile, and then immediately activates that profile.
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# This class currently does not process the rest of the g-code in any way.
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class GCodeReader(MeshReader):
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## Initialises the g-code reader as a mesh reader.
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def __init__(self):
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super().__init__()
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## Reads a g-code file, loading the profile from it.
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def read(self, file_name):
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version = 1 #IF YOU CHANGE THIS FUNCTION IN A WAY THAT BREAKS REVERSE COMPATIBILITY, INCREMENT THIS VERSION NUMBER!
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prefix = ";SETTING_" + str(version) + " "
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#Loading all settings from the file. They are all at the end, but Python has no reverse seek any more since Python3. TODO: Consider moving settings to the start?
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serialised = "" #Will be filled with the serialised profile.
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try:
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with open(file_name) as f:
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for line in f:
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if line.startswith(prefix):
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serialised += line[len(prefix):] #Remove the prefix from the line, and add it to the rest.
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except IOError as e:
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Logger.log("e", "Unable to open file %s for reading: %s", file_name, str(e))
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#Unescape the serialised profile.
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escape_characters = { #Which special characters (keys) are replaced by what escape character (values).
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#Note: The keys are regex strings. Values are not.
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"\\\\": "\\", #The escape character.
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"\\n": "\n", #Newlines. They break off the comment.
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"\\r": "\r" #Carriage return. Windows users may need this for visualisation in their editors.
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}
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escape_characters = dict((re.escape(key), value) for key, value in escape_characters.items())
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pattern = re.compile("|".join(escape_characters.keys()))
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serialised = pattern.sub(lambda m: escape_characters[re.escape(m.group(0))], serialised) #Perform the replacement with a regular expression.
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#Apply the changes to the current profile.
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profile = Application.getInstance().getMachineManager().getActiveProfile()
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profile.unserialise(serialised) |