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# Mobius Forensic Toolkit
# Copyright (C) 2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018,2019,2020,2021,2022 Eduardo Aguiar
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any later
# version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
# Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# @brief Generic data holder
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class dataholder (object):
  pass

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# @brief Decode CXMLElement structure
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def decode (decoder):
  element = dataholder ()
  element.name = decoder.get_string ()
  element.value = decoder.get_string ()
  element.attributes = {}
  element.children = []

  # attributes
  count = decoder.get_count ()

  for i in range (count):
    name = decoder.get_string ()
    value = decoder.get_string ()
    element.attributes[name] = value

  # child elements
  count = decoder.get_count ()

  for i in range (count):
    child = decode (decoder)
    element.children.append (child)

  return element

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# @brief Iterate through CXMLElement structure attributes
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def iter_attributes (pxml, namespace=None):

  if not pxml:
    return

  if namespace:
    name = namespace + '.' + pxml.name.lower ()
  else:
    name = pxml.name.lower ()

  for attr_id, attr_value in pxml.attributes.items ():
    yield name + '.' + attr_id.lower (), attr_value

  for child in pxml.children:
    for attr_id, attr_value in iter_attributes (child, name):
      yield attr_id, attr_value

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# @brief get metadata from CXMLElement structure
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def get_metadata_from_pxml (pxml):
  metadata = []

  for attr_id, attr_value in iter_attributes (pxml):
    metadata.append ((attr_id.capitalize (), attr_value))

  return metadata
