def __init__(self, config_file='tablesuf.cfg', start_dir=None, *args, **kwargs):
"""
:param start_dir: directory for spider's meta-data
"""
super(TdWebSpider, self).__init__(*args, **kwargs)
# self.frontier = URLFrontier(max=100, max_crawl=100)
self.next_id = 0
self.countries = Countries(start_dir + '/' + "countries")
self.transports = Transports(start_dir + '/' + "transports")
self.links = Links(start_dir + '/' + "seeds")
self.table_counter = itertools.count()
self.config = Config(config_file)
self.table_limit = int(self.config.get_attribute('tablelimit'))
if (not self.links.empty()):
self.start_urls = self.links.contents()
else:
raise IOError("No seeds!")
# load links from seeds
self.links = Links(start_dir + '/' + "seeds")
self.start_urls = self.links.contents()
class TdWebSpider(scrapy.Spider):
"""
HTML table spider
"""
name = "tablespider"
# allowed_domains = [".vn", ".com"]
def __init__(self, config_file='tablesuf.cfg', start_dir=None, *args, **kwargs):
"""
:param start_dir: directory for spider's meta-data
"""
super(TdWebSpider, self).__init__(*args, **kwargs)
# self.frontier = URLFrontier(max=100, max_crawl=100)
self.next_id = 0
self.countries = Countries(start_dir + '/' + "countries")
self.transports = Transports(start_dir + '/' + "transports")
self.links = Links(start_dir + '/' + "seeds")
self.table_counter = itertools.count()
self.config = Config(config_file)
self.table_limit = int(self.config.get_attribute('tablelimit'))
if (not self.links.empty()):
self.start_urls = self.links.contents()
else:
raise IOError("No seeds!")
# load links from seeds
self.links = Links(start_dir + '/' + "seeds")
self.start_urls = self.links.contents()
def parse(self, response):
# self.store_html(response)
for item in self.parse_tables(response):
yield item
links = Selector(response).xpath("//a/@href").extract()
for l in links:
normLink = Utility.normalize(response.url, l)
yield Request(normLink, callback=self.follow_links)
def follow_links(self, response):
if next(self.table_counter) > self.table_limit:
raise CloseSpider(reason="Enough tables")
# self.store_html(response)
for item in self.parse_tables(response):
yield item
links = Selector(response).xpath("//a/@href").extract()
for l in links:
normLink = Utility.normalize(response.url, l)
yield Request(normLink, callback=self.follow_links)
def parse_tables(self, response):
sel = Selector(response)
page_title = sel.xpath(r'//title/text()').extract()[0]
tables = sel.xpath(r"//table")
for table in tables:
item = HTMLTableItem()
item['table'] = table.extract()
item['source'] = response.url
item['table_id'] = next(self.table_counter)
item['page_title'] = page_title
yield item
def get_path(self):
return self.config.get_attribute('storagedir')
