docs: def process_ogr2ogr(self, name, layer, input_path):
          """
          Process a layer using ogr2ogr.
          """
          output_path = os.path.join(TEMP_DIRECTORY, '%s.json' % name)
  
          if os.path.exists(output_path):
              os.remove(output_path)
  
          ogr2ogr_cmd = [
              'ogr2ogr',
                  '-f', 'GeoJSON',
                  '-clipsrc', self.config['bbox']
          ]
  
          if 'where' in layer:
              ogr2ogr_cmd.extend([
                  '-where', '"%s"' % layer['where']
              ])
  
          ogr2ogr_cmd.extend([
              output_path,
              input_path
          ])
  
          sys.stdout.write('* Running ogr2ogr\n')
  
          if self.args.verbose:
              sys.stdout.write('  %s\n' % ' '.join(ogr2ogr_cmd))
  
          r = envoy.run(' '.join(ogr2ogr_cmd))
  
          if r.status_code != 0:
              sys.stderr.write(r.std_err)
  
          return output_path