Sync2

Sync

artTools/normalize_svg.py

-#!/usr/bin/env python3
-
-'''
-Application for "fixing" SVGs edited with Inkscape
-
-These problems are addressed:
-
-* Inkscape notoriously copies class styles into the object definitions.
-https://bugs.launchpad.net/inkscape/+bug/167937
-
-* Inkscape uses labels on layers. Layers are basically named groups. 
-  Inkscape does not sync the group id with the layer label.
-  
-Usage Example:
-python3 inkscape_svg_fixup.py vector_source.svg
-
-Note:
-The output of lxml differs greatly from standard SVG indentation.
-Please open and save the file in Inkscape before committing.
-'''
-
-import lxml.etree as etree
-import sys
-
-def fix(tree):
-  # know namespaces
-  ns = {
-    'svg' : 'http://www.w3.org/2000/svg',
-    'inkscape' : 'http://www.inkscape.org/namespaces/inkscape'
-  }
-  
-  # find document global style definition
-  # mangle it and interpret as python dictionary
-  style_element = tree.find('./svg:style',namespaces=ns)
-  style_definitions = style_element.text
-  pythonic_style_definitions = '{'+style_definitions.\
-  replace('\t.','"').replace('{','":"').replace('}','",').\
-  replace('/*','#')+'}'
-  styles = eval(pythonic_style_definitions)
-
-  # go through all SVG elements
-  for elem in tree.iter():
-    if (elem.tag == etree.QName(ns['svg'], 'g')):
-      # compare inkscape label with group element ID
-      l = elem.get(etree.QName(ns['inkscape'], 'label'))
-      if l:
-        i = elem.get('id')
-        if (i != l):
-          print("Overwriting ID %s with Label %s..."%(i, l))
-          elem.set('id', l)
-    
-    # remove all offending style attributes
-    s = elem.get('style')
-    c = elem.get('class')
-    if (c and s):
-      s = s.lower()
-      c = c.split(' ')[0] # regard main style only
-      cs = ''
-      if c in styles:
-        cs = styles[c].strip('; ').lower()
-      if (c not in styles):
-        print("Object id %s references unknown style class %s."%(i,c))
-      else:
-        if (cs != s.strip('; ')):
-          print("Style %s removed from object id %s differed from class %s style %s."%(s,i,c,cs))
-        del elem.attrib["style"]
-
-if __name__ == "__main__":
-  input_file = sys.argv[1]
-  tree = etree.parse(input_file)
-  fix(tree)
-  # store SVG into file (input file is overwritten)
-  svg = etree.tostring(tree, pretty_print=True)
-  with open(input_file, 'wb') as f:
-    f.write('<?xml version="1.0" encoding="UTF-8" standalone="no"?>\n'.encode("utf-8"))
-    f.write(svg)