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gallery-dl/gallery_dl/extractor/booru.py
2020-12-24 01:13:54 +01:00

257 lines
7.9 KiB
Python

# -*- coding: utf-8 -*-
# Copyright 2020 Mike Fährmann
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
"""Extractors for *booru sites"""
from .common import Extractor, Message, generate_extractors
from .. import text, util, exception
from xml.etree import ElementTree
import collections
import operator
import re
class BooruExtractor(Extractor):
"""Base class for *booru extractors"""
basecategory = "booru"
filename_fmt = "{category}_{id}_{md5}.{extension}"
page_start = 0
per_page = 100
def items(self):
self.login()
data = self.metadata()
tags = self.config("tags", False)
for post in self.posts():
try:
url = self._file_url(post)
if url[0] == "/":
url = self.root + url
except (KeyError, TypeError):
self.log.debug("Unable to fetch download URL for post %s "
"(md5: %s)", post.get("id"), post.get("md5"))
continue
if tags:
self._extended_tags(post)
self._prepare(post)
post.update(data)
text.nameext_from_url(url, post)
yield Message.Directory, post
yield Message.Url, url, post
def skip(self, num):
pages = num // self.per_page
self.page_start += pages
return pages * self.per_page
def login(self):
"""Login and set necessary cookies"""
def metadata(self):
"""Return a dict with general metadata"""
return ()
def posts(self):
"""Return an iterable with post objects"""
return ()
_file_url = operator.itemgetter("file_url")
@staticmethod
def _prepare(post):
post["date"] = text.parse_datetime(
post["created_at"], "%a %b %d %H:%M:%S %z %Y")
def _extended_tags(self, post, page=None):
if not page:
url = "{}/index.php?page=post&s=view&id={}".format(
self.root, post["id"])
page = self.request(url).text
html = text.extract(page, '<ul id="tag-', '</ul>')[0]
if html:
tags = collections.defaultdict(list)
pattern = re.compile(
r"tag-type-([^\"' ]+).*?[?;]tags=([^\"'&]+)", re.S)
for tag_type, tag_name in pattern.findall(html):
tags[tag_type].append(text.unquote(tag_name))
for key, value in tags.items():
post["tags_" + key] = " ".join(value)
def _api_request(self, params):
url = self.root + "/index.php?page=dapi&s=post&q=index"
return ElementTree.fromstring(self.request(url, params=params).text)
def _pagination(self, params):
params["pid"] = self.page_start
params["limit"] = self.per_page
while True:
root = self._api_request(params)
for post in root:
yield post.attrib
if len(root) < self.per_page:
return
params["pid"] += 1
class BooruPostExtractor(BooruExtractor):
subcategory = "post"
archive_fmt = "{id}"
pattern_fmt = r"/index\.php\?page=post&s=view&id=(\d+)"
def __init__(self, match):
BooruExtractor.__init__(self, match)
self.post_id = match.group(1)
def posts(self):
return self._pagination({"id": self.post_id})
class BooruTagExtractor(BooruExtractor):
subcategory = "tag"
directory_fmt = ("{category}", "{search_tags}")
archive_fmt = "t_{search_tags}_{id}"
pattern_fmt = r"/index\.php\?page=post&s=list&tags=([^&#]+)"
def __init__(self, match):
BooruExtractor.__init__(self, match)
self.tags = text.unquote(match.group(1).replace("+", " "))
def metadata(self):
return {"search_tags": self.tags}
def posts(self):
return self._pagination({"tags" : self.tags})
class BooruPoolExtractor(BooruExtractor):
subcategory = "pool"
directory_fmt = ("{category}", "pool", "{pool}")
archive_fmt = "p_{pool}_{id}"
pattern_fmt = r"/index\.php\?page=pool&s=show&id=(\d+)"
def __init__(self, match):
BooruExtractor.__init__(self, match)
self.pool_id = match.group(1)
self.post_ids = ()
def skip(self, num):
self.page_start += num
return num
def metadata(self):
url = "{}/index.php?page=pool&s=show&id={}".format(
self.root, self.pool_id)
page = self.request(url).text
name, pos = text.extract(page, "<h4>Pool: ", "</h4>")
if not name:
raise exception.NotFoundError("pool")
self.post_ids = text.extract_iter(
page, 'class="thumb" id="p', '"', pos)
return {
"pool": text.parse_int(self.pool_id),
"pool_name": text.unescape(name),
}
def posts(self):
params = {}
for params["id"] in util.advance(self.post_ids, self.page_start):
for post in self._api_request(params):
yield post.attrib
EXTRACTORS = {
"rule34": {
"root": "https://rule34.xxx",
"test-tag": (
("https://rule34.xxx/index.php?page=post&s=list&tags=danraku", {
"content": "97e4bbf86c3860be18de384d02d544251afe1d45",
"pattern": r"https?://.*rule34\.xxx/images/\d+/[0-9a-f]+\.jpg",
"count": 1,
}),
),
"test-pool": (
("https://rule34.xxx/index.php?page=pool&s=show&id=179", {
"count": 3,
}),
),
"test-post": (
("https://rule34.xxx/index.php?page=post&s=view&id=1995545", {
"content": "97e4bbf86c3860be18de384d02d544251afe1d45",
"options": (("tags", True),),
"keyword": {
"tags_artist": "danraku",
"tags_character": "kashima_(kantai_collection)",
"tags_copyright": "kantai_collection",
"tags_general": str,
"tags_metadata": str,
},
}),
),
},
"safebooru": {
"root": "https://safebooru.org",
"test-tag": (
("https://safebooru.org/index.php?page=post&s=list&tags=bonocho", {
"url": "17c61b386530cf4c30842c9f580d15ef1cd09586",
"content": "e5ad4c5bf241b1def154958535bef6c2f6b733eb",
}),
),
"test-pool": (
("https://safebooru.org/index.php?page=pool&s=show&id=11", {
"count": 5,
}),
),
"test-post": (
("https://safebooru.org/index.php?page=post&s=view&id=1169132", {
"url": "cf05e37a3c62b2d55788e2080b8eabedb00f999b",
"content": "93b293b27dabd198afafabbaf87c49863ac82f27",
"options": (("tags", True),),
"keyword": {
"tags_artist": "kawanakajima",
"tags_character": "heath_ledger ronald_mcdonald the_joker",
"tags_copyright": "dc_comics mcdonald's the_dark_knight",
"tags_general": str,
},
}),
),
},
"realbooru": {
"root": "https://realbooru.com",
"test-tag": (
("https://realbooru.com/index.php?page=post&s=list&tags=wine", {
"count": ">= 64",
}),
),
"test-pool": (
("https://realbooru.com/index.php?page=pool&s=show&id=1", {
"count": 3,
}),
),
"test-post": (
("https://realbooru.com/index.php?page=post&s=view&id=668483", {
"url": "2421b5b0e15d5e20f9067090a8b0fd4114d3e7d9",
"content": "7f5873ce3b6cd295ea2e81fcb49583098ea9c8da",
}),
),
},
}
generate_extractors(EXTRACTORS, globals(), (
BooruTagExtractor,
BooruPoolExtractor,
BooruPostExtractor,
))