[mod] add external_urls.json and wikidata_units.json

utils/fetch_wikidata_units.py

@@ -0,0 +1,47 @@
+#!/usr/bin/env python
+
+import json
+import collections
+
+# set path
+from sys import path
+from os.path import realpath, dirname, join
+path.append(realpath(dirname(realpath(__file__)) + '/../'))
+
+from searx import searx_dir
+from searx.engines.wikidata import send_wikidata_query
+
+
+SARQL_REQUEST = """
+SELECT DISTINCT ?item ?symbol ?P2370 ?P2370Unit ?P2442 ?P2442Unit
+WHERE
+{
+?item wdt:P31/wdt:P279 wd:Q47574.
+?item wdt:P5061 ?symbol.
+FILTER(LANG(?symbol) = "en").
+}
+ORDER BY ?item
+"""
+
+
+def get_data():
+    def get_key(unit):
+        return unit['item']['value'].replace('http://www.wikidata.org/entity/', '')
+
+    def get_value(unit):
+        return unit['symbol']['value']
+
+    result = send_wikidata_query(SARQL_REQUEST)
+    if result is not None:
+        # sort the unit by entity name
+        # so different fetchs keep the file unchanged.
+        list(result['results']['bindings']).sort(key=get_key)
+        return collections.OrderedDict([(get_key(unit), get_value(unit)) for unit in result['results']['bindings']])
+
+
+def get_wikidata_units_filename():
+    return join(join(searx_dir, "data"), "wikidata_units.json")
+
+
+with open(get_wikidata_units_filename(), 'w') as f:
+    json.dump(get_data(), f, indent=4, ensure_ascii=False)