share/extensions/extractimage.py

   1 #!/usr/bin/env python
   2 '''
   3 Copyright (C) 2005 Aaron Spike, aaron@ekips.org
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 2 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18 '''
  19
  20 import inkex, base64
  21
  22 class MyEffect(inkex.Effect):
  23     def __init__(self):
  24         inkex.Effect.__init__(self)
  25         self.OptionParser.add_option("--filepath",
  26                         action="store", type="string",
  27                         dest="filepath", default=None,
  28                         help="")
  29     def effect(self):
  30         ctx = inkex.xml.xpath.Context.Context(self.document,processorNss=inkex.NSS)
  31
  32         # exbed the first embedded image
  33         path = self.options.filepath
  34         if (path != ''):
  35             if (self.options.ids):
  36                 for id, node in self.selected.iteritems():
  37                     if node.tagName == 'image':
  38                         xlink = node.attributes.getNamedItemNS(inkex.NSS[u'xlink'],'href')
  39                         if (xlink.value[:4]=='data'):
  40                             comma = xlink.value.find(',')
  41                             if comma>0:
  42                                 data = base64.decodestring(xlink.value[comma:])
  43                                 open(path,'wb').write(data)
  44                                 xlink.value = path
  45                             else:
  46                                 inkex.debug('Difficulty finding the image data.')
  47                             break
  48
  49 e = MyEffect()
  50 e.affect()