"""Scrapers accept an input located somewhere (at a URL or local file)
and scrape them into objects, which can be dumped by an outputter."""

from . import yuku, pickle

SCRAPERS = [yuku, pickle]

def get_scraper(name):
    """Get the scraper with the specified name."""
    for scraper in SCRAPERS:
        if scraper.__name__.endswith(".{}".format(name)):
            return scraper

    raise Exception("Unknown scraper: {}".format(name))

def guess_scraper(url):
    """Attempt to guess the correct scraper for handling the given path or URL."""
    for scraper in SCRAPERS:
        if "can_scrape_url" in vars(scraper) and scraper.can_scrape_url(url):
            return scraper

    raise Exception("Unable to guess scraper for forum url: {}".format(url))