Modernized ExportXY extension

extensions/fablabchemnitz/exportxy.py

@@ -6,12 +6,14 @@
 # John Cliff <john.cliff@gmail.com>
 # Neon22 <https://github.com/Neon22?tab=repositories>
 # Jens N. Lallensack <jens.lallensack@gmail.com>
+# Mario Voigt <mario.voigt@stadtfabrikanten.org>
 #
 # Copyright (C) 2011 Jean Moreno
 # Copyright (C) 2011 John Cliff 
 # Copyright (C) 2011 Neon22
 # Copyright (C) 2019 Jens N. Lallensack
-#
+# Copyright (C) 2021 Mario Voigt
+
 # Released under GNU GPL v3, see https://www.gnu.org/licenses/gpl-3.0.en.html for details.
 #
 import inkex
@@ -19,28 +21,25 @@ import sys
 from inkex.paths import CubicSuperPath
 from inkex import transforms
 
-def warn(*args, **kwargs):
-    pass
-import warnings
-warnings.warn = warn
-
 class ExportXY(inkex.EffectExtension):
+    
     def __init__(self):
         inkex.Effect.__init__(self)
+        
     def effect(self):
-        for node in self.svg.selected.items():
+        if len(self.svg.selected) > 0:
             output_all = output_nodes = ""
-            for id, node in self.svg.selected.items():
-                if node.tag == inkex.addNS('path','svg'):
-                    output_all += ""
-                    output_nodes += ""
+            for node in self.svg.selection.filter(inkex.PathElement):
                 node.apply_transform()
-                    d = node.get('d')
-                    p = CubicSuperPath(d)
+                p = CubicSuperPath(node.get('d'))
                 for subpath in p:
                     for csp in subpath:
                         output_nodes += str(csp[1][0]) + "\t" + str(csp[1][1]) + "\n"
-            sys.stderr.write(output_nodes)
+                output_nodes += "\n"                 
+            sys.stderr.write(output_nodes.strip())
+        else:
+            inkex.errormsg('Please select some paths first.')
+            return
         
 if __name__ == '__main__':
     ExportXY().run()