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#!/usr/bin/env python

from lxml import etree
import argparse

def main(filename):
   # Load XML
   ovf = etree.parse(filename)
   root = ovf.getroot()

   # Update VirtualSystemType
   virtual_system_type = root.find('.//{http://schemas.dmtf.org/wbem/wscim/1/cim-schema/2/CIM_VirtualSystemSettingData}VirtualSystemType')
   virtual_system_type.text = 'vmx-11'

   # Get namespaces dict
   nsmap = root.nsmap
   # Remove None
   nsmap.pop(None)

   # Remove IDE controllers and sound card
   for section in ["ideController0", "ideController1", "sound"]:
      for item in root.xpath('.//rasd:ElementName[text()="%s"]/..' % section, namespaces=nsmap):
         print("Item %s removed" % section)
         item.getparent().remove(item)

   # Finally save the modified XML
   with open(filename, 'w') as f:
      f.write(etree.tostring(root))

if __name__ == '__main__':
   parser = argparse.ArgumentParser()
   parser.add_argument("filename", help='File to modify')
   args = parser.parse_args()
   main(args.filename)

  "post-processors": [{
     "type": "shell-local",
     "inline": [
        "../bin/ovf-postprocess.py output-demo/rhel7-demo.ovf",
        "ovftool --lax output-demo/rhel7-demo.ovf rhel7-demo.ova",
        "rm -fr output-demo"
     ]
  }]