1
0
Fork 0
mirror of https://github.com/searxng/searxng.git synced 2024-12-22 17:26:30 +00:00
searxng/searx/external_urls.py
2020-10-28 08:09:25 +01:00

77 lines
2.1 KiB
Python

import math
from searx.data import EXTERNAL_URLS
IMDB_PREFIX_TO_URL_ID = {
'tt': 'imdb_title',
'mn': 'imdb_name',
'ch': 'imdb_character',
'co': 'imdb_company',
'ev': 'imdb_event'
}
def get_imdb_url_id(imdb_item_id):
id_prefix = imdb_item_id[:2]
return IMDB_PREFIX_TO_URL_ID.get(id_prefix)
def get_external_url(url_id, item_id, alternative="default"):
"""Return an external URL or None if url_id is not found.
url_id can take value from data/external_urls.json
The "imdb_id" value is automaticaly converted according to the item_id value.
If item_id is None, the raw URL with the $1 is returned.
"""
if url_id == 'imdb_id' and item_id is not None:
url_id = get_imdb_url_id(item_id)
url_description = EXTERNAL_URLS.get(url_id)
if url_description:
url_template = url_description["urls"].get(alternative)
if url_template is not None:
if item_id is not None:
return url_template.replace('$1', item_id)
else:
return url_template
return None
def get_earth_coordinates_url(latitude, longitude, osm_zoom, alternative='default'):
url = get_external_url('map', None, alternative)\
.replace('${latitude}', str(latitude))\
.replace('${longitude}', str(longitude))\
.replace('${zoom}', str(osm_zoom))
return url
def area_to_osm_zoom(area):
"""Convert an area in km² into an OSM zoom. Less reliable if the shape is not round.
logarithm regression using these data:
* 9596961 -> 4 (China)
* 3287263 -> 5 (India)
* 643801 -> 6 (France)
* 6028 -> 9
* 1214 -> 10
* 891 -> 12
* 12 -> 13
In WolframAlpha:
>>> log fit {9596961,15},{3287263, 14},{643801,13},{6028,10},{1214,9},{891,7},{12,6}
with 15 = 19-4 (China); 14 = 19-5 (India) and so on
Args:
area (int,float,str): area in km²
Returns:
int: OSM zoom or 19 in area is not a number
"""
try:
amount = float(area)
return max(0, min(19, round(19 - 0.688297 * math.log(226.878 * amount))))
except ValueError:
return 19