44 lines
1.4 KiB
Python
Executable File
44 lines
1.4 KiB
Python
Executable File
#!/usr/bin/env python
|
|
"""
|
|
Fourmi - An internet webcrawler searching for information on chemical
|
|
compounds. [todo] - Add some more useful text here.
|
|
"""
|
|
|
|
from twisted.internet import reactor
|
|
from scrapy.crawler import Crawler
|
|
from scrapy import log, signals
|
|
from FourmiCrawler.spider import FourmiSpider
|
|
from scrapy.utils.project import get_project_settings
|
|
import os, inspect
|
|
|
|
def load_parsers(rel_dir="FourmiCrawler/parsers"):
|
|
path = os.path.dirname(os.path.abspath(__file__))
|
|
path += "/" + rel_dir
|
|
parsers = []
|
|
|
|
for py in [f[:-3] for f in os.listdir(path) if f.endswith('.py') and f != '__init__.py']:
|
|
mod = __import__('.'.join(["FourmiCrawler.parsers", py]), fromlist=[py]) # [todo] - This module name should be derived from the rel_dir variable
|
|
classes = [getattr(mod, x) for x in dir(mod) if inspect.isclass(getattr(mod, x))] # [fix] - This also finds classes that are imported.
|
|
for cls in classes:
|
|
parsers.append(cls()) # [review] - Would we ever need arguments for the parsers?
|
|
return parsers
|
|
|
|
def setup_crawler(searchable):
|
|
spider = FourmiSpider(compound=searchable)
|
|
spider.add_parsers(load_parsers())
|
|
settings = get_project_settings()
|
|
crawler = Crawler(settings)
|
|
crawler.signals.connect(reactor.stop, signal=signals.spider_closed)
|
|
crawler.configure()
|
|
crawler.crawl(spider)
|
|
crawler.start()
|
|
|
|
|
|
def start():
|
|
setup_crawler("Methane")
|
|
log.start()
|
|
reactor.run()
|
|
|
|
|
|
start()
|