b75cd3dd52
This PR fixes header uniformity across all Path files. It also removes all trailing whitespace.
119 lines
4.3 KiB
Python
119 lines
4.3 KiB
Python
# ***************************************************************************
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# * Copyright (c) 2014 Yorik van Havre <yorik@uncreated.net> *
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# * *
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# * This file is part of the FreeCAD CAx development system. *
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# * *
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# * This program is free software; you can redistribute it and/or modify *
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# * it under the terms of the GNU Lesser General Public License (LGPL) *
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# * as published by the Free Software Foundation; either version 2 of *
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# * the License, or (at your option) any later version. *
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# * for detail see the LICENCE text file. *
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# * *
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# * FreeCAD is distributed in the hope that it will be useful, *
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# * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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# * GNU Lesser General Public License for more details. *
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# * *
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# * You should have received a copy of the GNU Library General Public *
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# * License along with FreeCAD; if not, write to the Free Software *
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# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
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# * USA *
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# * *
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# ***************************************************************************
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'''
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This is an example preprocessor file for the Path workbench. Its aim is to
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open a gcode file, parse its contents, and create the appropriate objects
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in FreeCAD. This preprocessor will not add imported gcode to an existing
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job. For a more useful preprocessor, look at the gcode_pre.py file
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Read the Path Workbench documentation to know how to create Path objects
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from GCode.
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'''
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import os
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import Path
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import FreeCAD
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import PathScripts.PathLog as PathLog
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# LEVEL = PathLog.Level.DEBUG
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LEVEL = PathLog.Level.INFO
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PathLog.setLevel(LEVEL, PathLog.thisModule())
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if LEVEL == PathLog.Level.DEBUG:
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PathLog.trackModule(PathLog.thisModule())
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# to distinguish python built-in open function from the one declared below
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if open.__module__ in ['__builtin__', 'io']:
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pythonopen = open
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def open(filename):
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"called when freecad opens a file."
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PathLog.track(filename)
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docname = os.path.splitext(os.path.basename(filename))[0]
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doc = FreeCAD.newDocument(docname)
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insert(filename, doc.Name)
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def insert(filename, docname):
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"called when freecad imports a file"
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PathLog.track(filename)
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gfile = pythonopen(filename)
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gcode = gfile.read()
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gfile.close()
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gcode = parse(gcode)
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doc = FreeCAD.getDocument(docname)
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obj = doc.addObject("Path::Feature", "Path")
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path = Path.Path(gcode)
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obj.Path = path
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def parse(inputstring):
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"parse(inputstring): returns a parsed output string"
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print("preprocessing...")
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PathLog.track(inputstring)
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# split the input by line
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lines = inputstring.split("\n")
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output = []
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lastcommand = None
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for lin in lines:
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# remove any leftover trailing and preceding spaces
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lin = lin.strip()
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if not lin:
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# discard empty lines
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continue
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if lin[0].upper() in ["N"]:
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# remove line numbers
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lin = lin.split(" ", 1)
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if len(lin) >= 1:
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lin = lin[1].strip()
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else:
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continue
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if lin[0] in ["(", "%", "#", ";"]:
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# discard comment and other non strictly gcode lines
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continue
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if lin[0].upper() in ["G", "M"]:
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# found a G or M command: we store it
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output.append(Path.Command(str(lin)))
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last = lin[0].upper()
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for c in lin[1:]:
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if not c.isdigit():
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break
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else:
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last += c
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lastcommand = last
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elif lastcommand:
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# no G or M command: we repeat the last one
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output.append(Path.Command(str(lastcommand + " " + lin)))
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print("done preprocessing.")
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return output
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print(__name__ + " gcode preprocessor loaded.")
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