old_contents: # Copyright (c) 2011, Robert Escriva
  # All rights reserved.
  #
  # Redistribution and use in source and binary forms, with or without
  # modification, are permitted provided that the following conditions are met:
  #
  #     * Redistributions of source code must retain the above copyright notice,
  #       this list of conditions and the following disclaimer.
  #     * Redistributions in binary form must reproduce the above copyright
  #       notice, this list of conditions and the following disclaimer in the
  #       documentation and/or other materials provided with the distribution.
  #     * Neither the name of Firmant nor the names of its contributors may be
  #       used to endorse or promote products derived from this software without
  #       specific prior written permission.
  #
  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  # DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
  # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  # SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  # CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  
  from __future__ import absolute_import
  from __future__ import print_function
  from __future__ import unicode_literals
  from __future__ import with_statement
  
  import jinja2
  
  import firmant.objects
  import firmant.output
  import firmant.urls
  
  
  class Jinja2Writer(object):
  
      def __init__(self, retrieve, objname, template, context=None, loader=None):
          self._retrieve = retrieve
          self._objname = objname
          self._template = template
          self._context = context or {}
          loader = loader or jinja2.PackageLoader('firmant', 'templates')
          self._env = jinja2.Environment(loader=loader)
  
      def write_all(self):
          for key, obj in firmant.objects.retrieve(self._retrieve):
              self.write(key, obj)
  
      def write(self, key, obj):
          context = self._context.copy()
          context[self._objname] = obj
          template = self._env.get_template(self._template)
          data = template.render(context)
          firmant.output.write(key, data)
  
new_contents: # Copyright (c) 2011, Robert Escriva
  # All rights reserved.
  #
  # Redistribution and use in source and binary forms, with or without
  # modification, are permitted provided that the following conditions are met:
  #
  #     * Redistributions of source code must retain the above copyright notice,
  #       this list of conditions and the following disclaimer.
  #     * Redistributions in binary form must reproduce the above copyright
  #       notice, this list of conditions and the following disclaimer in the
  #       documentation and/or other materials provided with the distribution.
  #     * Neither the name of Firmant nor the names of its contributors may be
  #       used to endorse or promote products derived from this software without
  #       specific prior written permission.
  #
  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  # DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
  # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  # SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  # CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  
  from __future__ import absolute_import
  from __future__ import print_function
  from __future__ import unicode_literals
  from __future__ import with_statement
  
  import jinja2
  
  import firmant.objects
  import firmant.output
  import firmant.urls
  
  
  class Jinja2Writer(object):
  
      def __init__(self, retrieve, objname, template, context=None, loader=None):
          self._retrieve = retrieve
          self._objname = objname
          self._template = template
          self._context = {'url': firmant.urls.url}
          self._context.update(context or {})
          loader = loader or jinja2.PackageLoader('firmant', 'templates')
          self._env = jinja2.Environment(loader=loader)
  
      def write_all(self):
          for key, obj in firmant.objects.retrieve(self._retrieve):
              self.write(key, obj)
  
      def write(self, key, obj):
          context = self._context.copy()
          context[self._objname] = obj
          template = self._env.get_template(self._template)
          data = template.render(context)
          firmant.output.write(key, data)
  
subject: Add the url lookup function to the Jinja2 context.