improved geodata and tools

tools/geo/py/geonames.py

@@ -0,0 +1,19 @@
+import ox
+from geo import read_json, read_table
+
+geo = {
+    'keys': read_json('../json/oxjs.org/geonames.keys.json')
+    #'levels': read_json('../json/oxjs.org/levels.json')
+}
+
+def get_countries():
+    return get_data('country', 'countryInfo', 'ISO')
+
+def get_data(type, file, sort_key):
+    keys = geo['keys'][type]['geonames.org']
+    sort = lambda x: x[sort_key]
+    data = read_table('http://download.geonames.org/export/dump/' + file + '.txt', keys, sort=sort)
+    return data
+
+def get_languages():
+    return get_data('language', 'iso-languagecodes', 'ISO_639-3')