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93 lines
3.0 KiB
93 lines
3.0 KiB
# -*- coding: utf-8 -*-
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# Copyright 2017 Mike Fährmann
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 2 as
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# published by the Free Software Foundation.
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"""Extract images from https://www.2chan.net/"""
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from .common import Extractor, Message
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from .. import text
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class FutabaThreadExtractor(Extractor):
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"""Extractor for images from threads on www.2chan.net"""
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category = "2chan"
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subcategory = "thread"
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directory_fmt = ["{category}", "{board_name}", "{thread}"]
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pattern = [r"(?:https?://)?(([^.]+)\.2chan\.net/([^/]+)/res/(\d+))"]
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urlfmt = "https://{server}.2chan.net/{board}/src/{filename}"
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test = [("http://dec.2chan.net/70/res/947.htm", {
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"url": "c5c12b80b290e224b6758507b3bb952044f4595b",
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"keyword": "4bd22e7a9c3636faecd6ea7082509e8655e10dd0",
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})]
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def __init__(self, match):
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Extractor.__init__(self)
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url, self.server, self.board, self.thread = match.groups()
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self.url = "https://" + url + ".htm"
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def items(self):
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page = self.request(self.url).text
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data = self.get_metadata(page)
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yield Message.Version, 1
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yield Message.Directory, data
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for post in self.posts(page):
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if "filename" not in post:
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continue
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post.update(data)
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url = self.urlfmt.format_map(post)
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yield Message.Url, url, post
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def get_metadata(self, page):
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"""Collect metadata for extractor-job"""
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title = text.extract(page, "<title>", "</title>")[0]
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title, _, boardname = title.rpartition(" - ")
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return {
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"server": self.server,
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"title": title,
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"board": self.board,
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"board_name": boardname[:-4],
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"thread": self.thread,
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}
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def posts(self, page):
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"""Build a list of all post-objects"""
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page = text.extract(
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page, '<div class="thre">', '<div style="clear:left"></div>')[0]
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return [
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self.parse(post)
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for post in page.split('<table border=0>')
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]
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def parse(self, post):
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"""Build post-object by extracting data from an HTML post"""
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data = self._extract_post(post)
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if '<a href="/' in post:
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self._extract_image(post, data)
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data["tim"], _, data["extension"] = data["filename"].partition(".")
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data["time"] = data["tim"][:-3]
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data["ext"] = "." + data["extension"]
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return data
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@staticmethod
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def _extract_post(post):
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return text.extract_all(post, (
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("no" , 'name="', '"'),
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("post", '<b>', '</b>'),
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("name", '<b>', ' </b>'),
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("now" , '</font> ', ' '),
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(None , '<blockquote', ''),
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("com" , '>', '</blockquote>'),
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))[0]
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@staticmethod
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def _extract_image(post, data):
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text.extract_all(post, (
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(None , '_blank', ''),
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("filename", '>', '<'),
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("fsize" , '(', ' '),
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), 0, data)
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