Replaced Script used for DXF export by more advanced version working with Inkscape 0.99.

4 files changed, 96 insertions, 43 deletions

diff --git a/Makefile b/Makefile
index a06a0d1..1b50f45 100644
--- a/Makefile
+++ b/Makefile
@@ -36,7 +36,7 @@ $(foreach i,$(COMPILED_SCAD_FILES),$(eval $(i): $(filter $(dir $(i))%,$(LIBRARY_
 
 # Rule to convert an SVG file to a DXF file.
 %.dxf: %.svg
-	dxf_export/main.sh $< $@
+	python2 dxf_export $< $@
 
 # Rule to compile an OpenSCAD file to an STL file.
 %.stl: %.scad
diff --git a/dxf_export/__main__.py b/dxf_export/__main__.py
new file mode 100644
index 0000000..ea6c7ad
--- /dev/null
+++ b/dxf_export/__main__.py
@@ -0,0 +1,95 @@
+import sys, os, xml.etree.ElementTree, subprocess, tempfile, contextlib, shutil
+import better_dxf_outlines
+
+
+@contextlib.contextmanager
+def TemporaryDirectory():
+	dir = tempfile.mkdtemp()
+	
+	try:
+		yield dir
+	finally:
+		shutil.rmtree(dir)
+
+
+def _export_dxf(in_path, out_path):
+	dxf_export = better_dxf_outlines.MyEffect()
+	dxf_export.affect(args = [in_path], output = False)
+	
+	with open(out_path, 'w') as file:
+		file.write(dxf_export.dxf)
+
+
+def _get_inkscape_layer_count(svg_path):
+	document = xml.etree.ElementTree.parse(svg_path)
+	layers = document.findall(
+		'{http://www.w3.org/2000/svg}g[@{http://www.inkscape.org/namespaces/inkscape}groupmode="layer"]')
+	
+	return len(layers)
+
+
+def _command(args):
+	process = subprocess.Popen(args)
+	process.wait()
+	
+	assert not process.returncode
+
+
+def _inkscape(svg_path, verbs):
+	def iter_args():
+		yield os.environ['INKSCAPE']
+		
+		for i in verbs:
+			yield '--verb'
+			yield i
+		
+		yield svg_path
+	
+	_command(list(iter_args()))
+
+
+def _unfuck_svg_document(temp_svg_path):
+	"""
+	Unfucks an SVG document so is can be processed by the better_dxf_export plugin.
+	"""
+	
+	layers_count = _get_inkscape_layer_count(temp_svg_path)
+
+	def iter_inkscape_verbs():
+		yield 'LayerUnlockAll'
+		yield 'LayerShowAll'
+
+		# Go to the first layer
+		for _ in range(layers_count):
+			yield 'LayerPrev'
+
+		for _ in range(layers_count):
+			yield 'EditSelectAll'
+			yield 'ObjectToPath'
+			yield 'EditSelectAll'
+			yield 'SelectionUnGroup'
+			yield 'EditSelectAll'
+			yield 'StrokeToPath'
+			yield 'EditSelectAll'
+			yield 'SelectionUnion'
+			yield 'LayerNext'
+
+		yield 'FileSave'
+		yield 'FileClose'
+		yield 'FileQuit'
+
+	_inkscape(temp_svg_path, list(iter_inkscape_verbs()))
+
+
+def main(in_path, out_path):
+	with TemporaryDirectory() as temp_dir:
+		temp_svg_path = os.path.join(temp_dir, 'temp.svg')
+		
+		shutil.copyfile(in_path, temp_svg_path)
+
+		_unfuck_svg_document(temp_svg_path)
+		
+		_export_dxf(temp_svg_path, out_path)
+
+
+main(*sys.argv[1:])
diff --git a/dxf_export/better_dxf_outlines.py b/dxf_export/better_dxf_outlines.py
index 142dc8f..19ec6c8 100755
--- a/dxf_export/better_dxf_outlines.py
+++ b/dxf_export/better_dxf_outlines.py
@@ -121,7 +121,3 @@ class MyEffect(inkex.Effect):
                 self.dxf_path_to_point(layer,p)
                     
         self.dxf_add( dxf_templates.r14_footer )
-
-e = MyEffect()
-e.affect()
-
diff --git a/dxf_export/main.sh b/dxf_export/main.sh
deleted file mode 100755
index 4a7f3f3..0000000
--- a/dxf_export/main.sh
+++ /dev/null
@@ -1,38 +0,0 @@
-#! /usr/bin/env bash
-
-set -e -o pipefail
-
-in_file=$1
-out_file=$2
-
-# If environment variable DXF_EXPORT_DEBUG is set, the temporary file that is modified using Inkscape is saved in the same directory as the source file and not removed.
-if [ "$DXF_EXPORT_DEBUG" ]; then
-	temp_file="$(dirname "$in_file")/$(basename "$in_file" '.svg')~temp.svg"
-else
-	temp_dir=$(mktemp -d)
-	temp_file="$temp_dir/temp.svg"
-fi
-
-script_path=$(dirname "$BASH_SOURCE")
-
-cp "$in_file" "$temp_file"
-
-# Run a few commands using Inkscape on the SVG file to get in into a shape that makes a successful conversion to DXF more likely.
-"$INKSCAPE" \
-	--verb UnlockAllInAllLayers \
-	--verb EditSelectAllInAllLayers \
-	--verb ObjectToPath \
-	--verb EditSelectAllInAllLayers \
-	--verb SelectionUnGroup \
-	--verb EditSelectAllInAllLayers \
-	--verb StrokeToPath \
-	--verb FileSave \
-	--verb FileClose \
-	"$temp_file"
-
-# Convert the SVG to a DXF file.
-python2 "$script_path/better_dxf_outlines.py" "$temp_file" > "$out_file"
-
-if ! [ "$DXF_EXPORT_DEBUG" ]; then
-	rm -rf "$temp_dir"
-fi