def build_search(self):
"""Build the headers and params for the search request for the search engine."""
self.search_params = {}
# Don't set the offset parameter explicitly if the default search (no offset) is correct.
start_search_position = None if self.current_page == 1 else str(
int(self.num_results_per_page) * int(self.current_page))
if self.search_engine == 'google':
self.parser = GoogleParser()
self.search_params['q'] = self.current_keyword
self.search_params['num'] = str(self.num_results_per_page)
self.search_params['start'] = start_search_position
if self.search_type == 'image':
self.search_params.update({
'oq': self.current_keyword,
'site': 'imghp',
'tbm': 'isch',
'source': 'hp',
#'sa': 'X',
'biw': 1920,
'bih': 881
})
elif self.search_type == 'video':
self.search_params.update({
'tbm': 'vid',
'source': 'lnms',
'sa': 'X',
'biw': 1920,
'bih': 881
})
elif self.search_type == 'news':
self.search_params.update({
'tbm': 'nws',
'source': 'lnms',
'sa': 'X'
})
elif self.search_engine == 'yandex':
self.parser = YandexParser()
self.search_params['text'] = self.current_keyword
self.search_params['p'] = start_search_position
if self.search_type == 'image':
self.base_search_url = 'http://yandex.ru/images/search?'
elif self.search_engine == 'bing':
self.parser = BingParser()
self.search_params['q'] = self.current_keyword
self.search_params['first'] = start_search_position
elif self.search_engine == 'yahoo':
self.parser = YahooParser()
self.search_params['p'] = self.current_keyword
self.search_params['b'] = start_search_position
self.search_params['ei'] = 'UTF-8'
elif self.search_engine == 'baidu':
self.parser = BaiduParser()
self.search_params['wd'] = self.current_keyword
self.search_params['pn'] = start_search_position
self.search_params['ie'] = 'utf-8'
elif self.search_engine == 'duckduckgo':
self.parser = DuckduckgoParser()
self.search_params['q'] = self.current_keyword
