# SPDX-License-Identifier: LGPL-2.1-or-later # *************************************************************************** # * * # * Copyright (c) 2023 Yorik van Havre * # * * # * This file is part of FreeCAD. * # * * # * FreeCAD is free software: you can redistribute it and/or modify it * # * under the terms of the GNU Lesser General Public License as * # * published by the Free Software Foundation, either version 2.1 of the * # * License, or (at your option) any later version. * # * * # * FreeCAD is distributed in the hope that it will be useful, but * # * WITHOUT ANY WARRANTY; without even the implied warranty of * # * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * # * Lesser General Public License for more details. * # * * # * You should have received a copy of the GNU Lesser General Public * # * License along with FreeCAD. If not, see * # * . * # * * # *************************************************************************** """Diffing tool for NativeIFC project objects""" import difflib import ifcopenshell import FreeCAD import FreeCADGui import Arch_rc from . import ifc_tools translate = FreeCAD.Qt.translate def get_diff(proj): """Obtains a diff between the current version and the saved version of a project""" if not getattr(proj, "IfcFilePath", None): old = [] return 1 else: # cannot use open() here as it gives different encoding # than ifcopenshell and diff does not work f = ifcopenshell.open(proj.IfcFilePath) old = f.wrapped_data.to_string().split("\n") if not old: return "" ifcfile = ifc_tools.get_ifcfile(proj) if not ifcfile: return "" new = ifcfile.wrapped_data.to_string().split("\n") # diff = difflib.HtmlDiff().make_file(old,new) # UGLY res = [l for l in difflib.unified_diff(old, new, lineterm="")] res = [l for l in res if l.startswith("+") or l.startswith("-")] res = [l for l in res if not l.startswith("+++") and not l.startswith("---")] return "\n".join(res) def htmlize(diff): """Returns an HTML version of a diff list""" html = "\n" if diff == 1: html += ( translate( "BIM", "The IFC file is not saved. Save once" " to have an existing IFC file to compare with." " Then, run this command again.", ) + "
\n" ) elif diff: diff = diff.split("\n") for l in diff: if l.startswith("+"): html += "" + l[:100] + "
\n" elif l.startswith("-"): html += "" + l[:100] + "
\n" else: html += l + "
\n" else: html += translate("BIM", "No changes to display.") + "
\n" html += "" return html def show_diff(diff): """Shows a dialog showing the diff contents""" dlg = FreeCADGui.PySideUic.loadUi(":/ui/dialogDiff.ui") dlg.textEdit.setStyleSheet("background-color: white; color: black;") dlg.textEdit.setHtml(htmlize(diff)) result = dlg.exec_()