old_contents: # Copyright (c) 2006, 2007, 2008, 2009, 2010, 2011  Andrey Golovizin
  # 
  # Permission is hereby granted, free of charge, to any person obtaining
  # a copy of this software and associated documentation files (the
  # "Software"), to deal in the Software without restriction, including
  # without limitation the rights to use, copy, modify, merge, publish,
  # distribute, sublicense, and/or sell copies of the Software, and to
  # permit persons to whom the Software is furnished to do so, subject to
  # the following conditions:
  # 
  # The above copyright notice and this permission notice shall be
  # included in all copies or substantial portions of the Software.
  # 
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  # IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
  # CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  # TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  # SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  
  """bibliography processor
  """
  
  
  def make_bibliography(aux_filename,
          bib_format=None,
          bib_encoding=None,
          output_encoding=None,
          **kwargs
          ):
      """This functions extracts all nessessary information from .aux file
      and writes the bibliography.
      """
  
      from os import path
      from pybtex import auxfile
      from pybtex.plugin import find_plugin
  
      filename = path.splitext(aux_filename)[0]
      aux_data = auxfile.parse_file(aux_filename, output_encoding)
  
      if bib_format is None:
          from pybtex.database.input import bibtex as bib_format
  
  
      try:
          output_backend = kwargs['output_backend']
      except KeyError:
          from pybtex.backends.latex import Backend as output_backend
  
  
      bib_format = bib_format.Parser
      bib_data = bib_format(bib_encoding).parse_files(aux_data.data, bib_format.get_default_suffix())
  
      style_cls = find_plugin('pybtex.style.formatting', aux_data.style)
      style = style_cls(
              label_style=kwargs.get('label_style'),
              name_style=kwargs.get('name_style'),
              abbreviate_names=kwargs.get('abbreviate_names', True),
      )
      entries = ((key, bib_data.entries[key]) for key in aux_data.citations)
      formatted_entries = style.format_entries(entries)
      del entries
  
      output_filename = filename + output_backend.get_default_suffix()
      output_backend(output_encoding).write_bibliography(formatted_entries, output_filename)
  
new_contents: # Copyright (c) 2006, 2007, 2008, 2009, 2010, 2011  Andrey Golovizin
  # 
  # Permission is hereby granted, free of charge, to any person obtaining
  # a copy of this software and associated documentation files (the
  # "Software"), to deal in the Software without restriction, including
  # without limitation the rights to use, copy, modify, merge, publish,
  # distribute, sublicense, and/or sell copies of the Software, and to
  # permit persons to whom the Software is furnished to do so, subject to
  # the following conditions:
  # 
  # The above copyright notice and this permission notice shall be
  # included in all copies or substantial portions of the Software.
  # 
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  # IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
  # CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  # TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  # SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  
  """bibliography processor
  """
  
  
  def make_bibliography(aux_filename,
          bib_format=None,
          bib_encoding=None,
          output_encoding=None,
          min_crossrefs=2,
          **kwargs
          ):
      """This functions extracts all nessessary information from .aux file
      and writes the bibliography.
      """
  
      from os import path
      from pybtex import auxfile
      from pybtex.plugin import find_plugin
  
      filename = path.splitext(aux_filename)[0]
      aux_data = auxfile.parse_file(aux_filename, output_encoding)
  
      if bib_format is None:
          from pybtex.database.input import bibtex as bib_format
  
  
      try:
          output_backend = kwargs['output_backend']
      except KeyError:
          from pybtex.backends.latex import Backend as output_backend
  
  
      bib_format = bib_format.Parser
      bib_data = bib_format(bib_encoding).parse_files(aux_data.data, bib_format.get_default_suffix())
  
      style_cls = find_plugin('pybtex.style.formatting', aux_data.style)
      style = style_cls(
              label_style=kwargs.get('label_style'),
              name_style=kwargs.get('name_style'),
              abbreviate_names=kwargs.get('abbreviate_names', True),
      )
      citations = bib_data.add_extra_citations(aux_data.citations, min_crossrefs)
      entries = ((key, bib_data.entries[key]) for key in citations)
      formatted_entries = style.format_entries(entries)
      del entries
  
      output_filename = filename + output_backend.get_default_suffix()
      output_backend(output_encoding).write_bibliography(formatted_entries, output_filename)
  
subject: Implement cross-references and wildcards in the Python engine.