nominatim/api/v1/format_xml.py

   1 # SPDX-License-Identifier: GPL-3.0-or-later
   2 #
   3 # This file is part of Nominatim. (https://nominatim.org)
   4 #
   5 # Copyright (C) 2023 by the Nominatim developer community.
   6 # For a full list of authors see the git log.
   7 """
   8 Helper functions for output of results in XML format.
   9 """
  10 from typing import Mapping, Any, Optional, Union
  11 import datetime as dt
  12 import xml.etree.ElementTree as ET
  13
  14 import nominatim.api as napi
  15 import nominatim.api.v1.classtypes as cl
  16
  17 #pylint: disable=too-many-branches
  18
  19 def _write_xml_address(root: ET.Element, address: napi.AddressLines,
  20                        country_code: Optional[str]) -> None:
  21     parts = {}
  22     for line in address:
  23         if line.isaddress:
  24             if line.local_name:
  25                 label = cl.get_label_tag(line.category, line.extratags,
  26                                          line.rank_address, country_code)
  27                 if label not in parts:
  28                     parts[label] = line.local_name
  29             if line.names and 'ISO3166-2' in line.names and line.admin_level:
  30                 parts[f"ISO3166-2-lvl{line.admin_level}"] = line.names['ISO3166-2']
  31
  32     for k,v in parts.items():
  33         ET.SubElement(root, k).text = v
  34
  35     if country_code:
  36         ET.SubElement(root, 'country_code').text = country_code
  37
  38
  39 def _create_base_entry(result: Union[napi.ReverseResult, napi.SearchResult],
  40                        root: ET.Element, simple: bool,
  41                        locales: napi.Locales) -> ET.Element:
  42     if result.address_rows:
  43         label_parts = result.address_rows.localize(locales)
  44     else:
  45         label_parts = []
  46
  47     place = ET.SubElement(root, 'result' if simple else 'place')
  48     if result.place_id is not None:
  49         place.set('place_id', str(result.place_id))
  50     if result.osm_object:
  51         osm_type = cl.OSM_TYPE_NAME.get(result.osm_object[0], None)
  52         if osm_type is not None:
  53             place.set('osm_type', osm_type)
  54         place.set('osm_id', str(result.osm_object[1]))
  55     if result.names and 'ref' in result.names:
  56         place.set('ref', result.names['ref'])
  57     elif label_parts:
  58         # bug reproduced from PHP
  59         place.set('ref', label_parts[0])
  60     place.set('lat', f"{result.centroid.lat:.7f}")
  61     place.set('lon', f"{result.centroid.lon:.7f}")
  62
  63     bbox = cl.bbox_from_result(result)
  64     place.set('boundingbox',
  65               f"{bbox.minlat:.7f},{bbox.maxlat:.7f},{bbox.minlon:.7f},{bbox.maxlon:.7f}")
  66
  67     place.set('place_rank', str(result.rank_search))
  68     place.set('address_rank', str(result.rank_address))
  69
  70     if result.geometry:
  71         for key in ('text', 'svg'):
  72             if key in result.geometry:
  73                 place.set('geo' + key, result.geometry[key])
  74         if 'kml' in result.geometry:
  75             ET.SubElement(root if simple else place, 'geokml')\
  76               .append(ET.fromstring(result.geometry['kml']))
  77         if 'geojson' in result.geometry:
  78             place.set('geojson', result.geometry['geojson'])
  79
  80     if simple:
  81         place.text = ', '.join(label_parts)
  82     else:
  83         place.set('display_name', ', '.join(label_parts))
  84         place.set('class', result.category[0])
  85         place.set('type', result.category[1])
  86         place.set('importance', str(result.calculated_importance()))
  87
  88     return place
  89
  90
  91 def format_base_xml(results: Union[napi.ReverseResults, napi.SearchResults],
  92                     options: Mapping[str, Any],
  93                     simple: bool, xml_root_tag: str,
  94                     xml_extra_info: Mapping[str, str]) -> str:
  95     """ Format the result into an XML response. With 'simple' exactly one
  96         result will be output, otherwise a list.
  97     """
  98     locales = options.get('locales', napi.Locales())
  99
 100     root = ET.Element(xml_root_tag)
 101     root.set('timestamp', dt.datetime.utcnow().strftime('%a, %d %b %Y %H:%M:%S +00:00'))
 102     root.set('attribution', cl.OSM_ATTRIBUTION)
 103     for k, v in xml_extra_info.items():
 104         root.set(k, v)
 105
 106     if simple and not results:
 107         ET.SubElement(root, 'error').text = 'Unable to geocode'
 108
 109     for result in results:
 110         place = _create_base_entry(result, root, simple, locales)
 111
 112         if not simple and options.get('icon_base_url', None):
 113             icon = cl.ICONS.get(result.category)
 114             if icon:
 115                 place.set('icon', icon)
 116
 117         if options.get('addressdetails', False) and result.address_rows:
 118             _write_xml_address(ET.SubElement(root, 'addressparts') if simple else place,
 119                                result.address_rows, result.country_code)
 120
 121         if options.get('extratags', False):
 122             eroot = ET.SubElement(root if simple else place, 'extratags')
 123             if result.extratags:
 124                 for k, v in result.extratags.items():
 125                     ET.SubElement(eroot, 'tag', attrib={'key': k, 'value': v})
 126
 127         if options.get('namedetails', False):
 128             eroot = ET.SubElement(root if simple else place, 'namedetails')
 129             if result.names:
 130                 for k,v in result.names.items():
 131                     ET.SubElement(eroot, 'name', attrib={'desc': k}).text = v
 132
 133     return '<?xml version="1.0" encoding="UTF-8" ?>\n' + ET.tostring(root, encoding='unicode')