src/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) 2024 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 from ..results import AddressLines, ReverseResult, ReverseResults, \
  15                       SearchResult, SearchResults
  16 from . import classtypes as cl
  17
  18 #pylint: disable=too-many-branches
  19
  20 def _write_xml_address(root: ET.Element, address: AddressLines,
  21                        country_code: Optional[str]) -> None:
  22     parts = {}
  23     for line in address:
  24         if line.isaddress:
  25             if line.local_name:
  26                 label = cl.get_label_tag(line.category, line.extratags,
  27                                          line.rank_address, country_code)
  28                 if label not in parts:
  29                     parts[label] = line.local_name
  30             if line.names and 'ISO3166-2' in line.names and line.admin_level:
  31                 parts[f"ISO3166-2-lvl{line.admin_level}"] = line.names['ISO3166-2']
  32
  33     for k,v in parts.items():
  34         ET.SubElement(root, k).text = v
  35
  36     if country_code:
  37         ET.SubElement(root, 'country_code').text = country_code
  38
  39
  40 def _create_base_entry(result: Union[ReverseResult, SearchResult],
  41                        root: ET.Element, simple: bool) -> ET.Element:
  42     place = ET.SubElement(root, 'result' if simple else 'place')
  43     if result.place_id is not None:
  44         place.set('place_id', str(result.place_id))
  45     if result.osm_object:
  46         osm_type = cl.OSM_TYPE_NAME.get(result.osm_object[0], None)
  47         if osm_type is not None:
  48             place.set('osm_type', osm_type)
  49         place.set('osm_id', str(result.osm_object[1]))
  50     if result.names and 'ref' in result.names:
  51         place.set('ref', result.names['ref'])
  52     elif result.locale_name:
  53         # bug reproduced from PHP
  54         place.set('ref', result.locale_name)
  55     place.set('lat', f"{result.centroid.lat:.7f}")
  56     place.set('lon', f"{result.centroid.lon:.7f}")
  57
  58     bbox = cl.bbox_from_result(result)
  59     place.set('boundingbox',
  60               f"{bbox.minlat:.7f},{bbox.maxlat:.7f},{bbox.minlon:.7f},{bbox.maxlon:.7f}")
  61
  62     place.set('place_rank', str(result.rank_search))
  63     place.set('address_rank', str(result.rank_address))
  64
  65     if result.geometry:
  66         for key in ('text', 'svg'):
  67             if key in result.geometry:
  68                 place.set('geo' + key, result.geometry[key])
  69         if 'kml' in result.geometry:
  70             ET.SubElement(root if simple else place, 'geokml')\
  71               .append(ET.fromstring(result.geometry['kml']))
  72         if 'geojson' in result.geometry:
  73             place.set('geojson', result.geometry['geojson'])
  74
  75     if simple:
  76         place.text = result.display_name or ''
  77     else:
  78         place.set('display_name', result.display_name or '')
  79         place.set('class', result.category[0])
  80         place.set('type', result.category[1])
  81         place.set('importance', str(result.calculated_importance()))
  82
  83     return place
  84
  85
  86 def format_base_xml(results: Union[ReverseResults, SearchResults],
  87                     options: Mapping[str, Any],
  88                     simple: bool, xml_root_tag: str,
  89                     xml_extra_info: Mapping[str, str]) -> str:
  90     """ Format the result into an XML response. With 'simple' exactly one
  91         result will be output, otherwise a list.
  92     """
  93     root = ET.Element(xml_root_tag)
  94     root.set('timestamp', dt.datetime.utcnow().strftime('%a, %d %b %Y %H:%M:%S +00:00'))
  95     root.set('attribution', cl.OSM_ATTRIBUTION)
  96     for k, v in xml_extra_info.items():
  97         root.set(k, v)
  98
  99     if simple and not results:
 100         ET.SubElement(root, 'error').text = 'Unable to geocode'
 101
 102     for result in results:
 103         place = _create_base_entry(result, root, simple)
 104
 105         if not simple and options.get('icon_base_url', None):
 106             icon = cl.ICONS.get(result.category)
 107             if icon:
 108                 place.set('icon', icon)
 109
 110         if options.get('addressdetails', False) and result.address_rows:
 111             _write_xml_address(ET.SubElement(root, 'addressparts') if simple else place,
 112                                result.address_rows, result.country_code)
 113
 114         if options.get('extratags', False):
 115             eroot = ET.SubElement(root if simple else place, 'extratags')
 116             if result.extratags:
 117                 for k, v in result.extratags.items():
 118                     ET.SubElement(eroot, 'tag', attrib={'key': k, 'value': v})
 119
 120         if options.get('namedetails', False):
 121             eroot = ET.SubElement(root if simple else place, 'namedetails')
 122             if result.names:
 123                 for k,v in result.names.items():
 124                     ET.SubElement(eroot, 'name', attrib={'desc': k}).text = v
 125
 126     return '<?xml version="1.0" encoding="UTF-8" ?>\n' + ET.tostring(root, encoding='unicode')