[enh][fix] support base_urls without language code ++ extra whitespaces removed

# @todo        content

from json import loads

from string import Formatter

from urllib import urlencode, quote

# engine dependent config

# search-url

base_url = 'https://{language}.wikipedia.org/'

search_url = base_url + 'w/api.php?action=query&list=search&{query}&srprop=timestamp&format=json&sroffset={offset}&srlimit={limit}'  # noqa

search_url = base_url + 'w/api.php?action=query\

                                  &list=search\

                                  &{query}\

                                  &srprop=timestamp\

                                  &format=json\

                                  &sroffset={offset}\

                                  &srlimit={limit}'

# do search-request

def request(query, params):

    offset = (params['pageno'] - 1) * number_of_results

    string_args = dict(query=urlencode({'srsearch': query}),

                        offset=offset,

                        limit=number_of_results)

    format_strings = Formatter().parse(base_url)

    if params['language'] == 'all':

        language = 'en'

    else:

        language = params['language'].split('_')[0]

    if len(format_strings) > 1:

        string_args['language'] = language

    # write search-language back to params, required in response

    params['language'] = language

    params['url'] = search_url.format(query=urlencode({'srsearch': query}),

                                      offset=offset,

                                      limit=number_of_results,

                                      language=language)

    params['url'] = search_url.format(**string_args)

    return params