def _common_clean(self, att, filter=None):
"""
Spolecna funkce pro clean_XXX metody. Zadany KML soubor rozparsuje a
vytahne z nej nosne informace pod atribut `att`_data (napr. polygon_data).
"""
data = self.cleaned_data.get(att)
if data:
# kontrola URL
data = data.strip()
if 'output=nl' not in data:
data = data + '&output=nl'
# stahneme KML soubor
content = download_content(data)
if content is None:
# chyba behem downloadu
logger.info('Problem with downloading URL %s' % data)
return None, self.err_down
setattr(self, '%s_kml' % att, content)
# rozparsujeme zadany KML
try:
parsed_data = parse_xml(KMLHandler(), content, filter)
except:
logger.info('Parsing error during processing content of %s' % data)
return None, self.err_wrong
if not parsed_data:
logger.info('Content of %s does not contain geo data' % data)
# ha! mozna jsme dostali link na "spatny" KML, overime si to
parsed_data2 = parse_xml(LinkHandler(), content)
if len(parsed_data2) != 1:
logger.info('Content of %s does not contain link data' % data)
# uzivatel zadal asi nejake spatne URL
return None, self.err_wrong
# mame nove URL, zkusime to s nim znovu
new_url = parsed_data2[0]
logger.info('Content of %s contain link to %s' % (data, new_url))
# stahneme KML soubor
content = download_content(new_url)
if content is None:
# chyba behem downloadu
logger.info('Problem with downloading URL %s' % new_url)
return None, self.err_down
setattr(self, '%s_kml' % att, content)
# rozparsujeme novy KML
parsed_data = parse_xml(KMLHandler(), content, filter)
if not parsed_data:
# tak ani odkaz ze "spatneho" KML nas nikam nedovedl
logger.info('Content of %s does not contain geo data' % new_url)
return None, self.err_wrong
data = new_url
setattr(self, '%s_data' % att, parsed_data)
return data, None
def find_entry_information(self):
"""
Zjisti dodatecne informace ze zadanych KML souboru. Co presne?
* vypocita geograficky stred vsech heren
* podle lat/lon pozice pres google zjisti nazev mesta
* z wikipedie vyzobne informaci o poctu obyvatel a rozloze
Tyto informace slouzi pro naplneni zaznamu Entry.
"""
out = {'wikipedia_url': None, 'public': False}
out['pos'] = self.find_center()
out['town'] = self.find_town(out['pos'])
if out['town']:
out['wikipedia_url'] = self.guess_wikipedia_url(out['town'])
wikipedia_content = download_content(out['wikipedia_url'])
if wikipedia_content:
out.update(parse_xml(MediaWikiHandler(), wikipedia_content))
if out['population'] and out['area']:
out['public'] = True
return out