1 files changed, 157 insertions, 0 deletions
diff --git a/gallery_dl/extractor/realbooru.py b/gallery_dl/extractor/realbooru.py
new file mode 100644
index 0000000..ab8a9b1
--- /dev/null
+++ b/gallery_dl/extractor/realbooru.py
@@ -0,0 +1,157 @@
+# -*- coding: utf-8 -*-
+
+# Copyright 2024 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 https://realbooru.com/"""
+
+from . import booru
+from .. import text, util
+import collections
+import re
+
+BASE_PATTERN = r"(?:https?://)?realbooru\.com"
+
+
+class RealbooruExtractor(booru.BooruExtractor):
+    basecategory = "booru"
+    category = "realbooru"
+    root = "https://realbooru.com"
+
+    def _parse_post(self, post_id):
+        url = "{}/index.php?page=post&s=view&id={}".format(
+            self.root, post_id)
+        page = self.request(url).text
+        extr = text.extract_from(page)
+        rating = extr('name="rating" content="', '"')
+        extr('class="container"', '>')
+
+        post = {
+            "_html"     : page,
+            "id"        : post_id,
+            "rating"    : "e" if rating == "adult" else (rating or "?")[0],
+            "tags"      : text.unescape(extr(' alt="', '"')),
+            "file_url"  : extr('src="', '"'),
+            "created_at": extr(">Posted at ", " by "),
+            "uploader"  : extr(">", "<"),
+            "score"     : extr('">', "<"),
+            "title"     : extr('id="title" style="width: 100%;" value="', '"'),
+            "source"    : extr('d="source" style="width: 100%;" value="', '"'),
+        }
+
+        post["md5"] = post["file_url"].rpartition("/")[2].partition(".")[0]
+        return post
+
+    def skip(self, num):
+        self.page_start += num
+        return num
+
+    def _prepare(self, post):
+        post["date"] = text.parse_datetime(post["created_at"], "%b, %d %Y")
+
+    def _pagination(self, params, begin, end):
+        url = self.root + "/index.php"
+        params["pid"] = self.page_start
+
+        while True:
+            page = self.request(url, params=params).text
+
+            cnt = 0
+            for post_id in text.extract_iter(page, begin, end):
+                cnt += 1
+                yield self._parse_post(post_id)
+
+            if cnt < self.per_page:
+                return
+            params["pid"] += self.per_page
+
+    def _tags(self, post, _):
+        page = post["_html"]
+        tag_container = text.extr(page, 'id="tagLink"', '</div>')
+        tags = collections.defaultdict(list)
+        pattern = re.compile(
+            r'<a class="(?:tag-type-)?([^"]+).*?;tags=([^"&]+)')
+        for tag_type, tag_name in pattern.findall(tag_container):
+            tags[tag_type].append(text.unescape(text.unquote(tag_name)))
+        for key, value in tags.items():
+            post["tags_" + key] = " ".join(value)
+
+
+class RealbooruTagExtractor(RealbooruExtractor):
+    subcategory = "tag"
+    directory_fmt = ("{category}", "{search_tags}")
+    archive_fmt = "t_{search_tags}_{id}"
+    per_page = 42
+    pattern = BASE_PATTERN + r"/index\.php\?page=post&s=list&tags=([^&#]*)"
+    example = "https://realbooru.com/index.php?page=post&s=list&tags=TAG"
+
+    def metadata(self):
+        self.tags = text.unquote(self.groups[0].replace("+", " "))
+        return {"search_tags": self.tags}
+
+    def posts(self):
+        return self._pagination({
+            "page": "post",
+            "s"   : "list",
+            "tags": self.tags,
+        }, '<a id="p', '"')
+
+
+class RealbooruFavoriteExtractor(RealbooruExtractor):
+    subcategory = "favorite"
+    directory_fmt = ("{category}", "favorites", "{favorite_id}")
+    archive_fmt = "f_{favorite_id}_{id}"
+    per_page = 50
+    pattern = BASE_PATTERN + r"/index\.php\?page=favorites&s=view&id=(\d+)"
+    example = "https://realbooru.com/index.php?page=favorites&s=view&id=12345"
+
+    def metadata(self):
+        return {"favorite_id": text.parse_int(self.groups[0])}
+
+    def posts(self):
+        return self._pagination({
+            "page": "favorites",
+            "s"   : "view",
+            "id"  : self.groups[0],
+        }, '" id="p', '"')
+
+
+class RealbooruPoolExtractor(RealbooruExtractor):
+    subcategory = "pool"
+    directory_fmt = ("{category}", "pool", "{pool} {pool_name}")
+    archive_fmt = "p_{pool}_{id}"
+    pattern = BASE_PATTERN + r"/index\.php\?page=pool&s=show&id=(\d+)"
+    example = "https://realbooru.com/index.php?page=pool&s=show&id=12345"
+
+    def metadata(self):
+        pool_id = self.groups[0]
+        url = "{}/index.php?page=pool&s=show&id={}".format(self.root, pool_id)
+        page = self.request(url).text
+
+        name, pos = text.extract(page, "<h4>Pool: ", "</h4>")
+        self.post_ids = text.extract_iter(
+            page, 'class="thumb" id="p', '"', pos)
+
+        return {
+            "pool": text.parse_int(pool_id),
+            "pool_name": text.unescape(name),
+        }
+
+    def posts(self):
+        return map(
+            self._parse_post,
+            util.advance(self.post_ids, self.page_start)
+        )
+
+
+class RealbooruPostExtractor(RealbooruExtractor):
+    subcategory = "post"
+    archive_fmt = "{id}"
+    pattern = BASE_PATTERN + r"/index\.php\?page=post&s=view&id=(\d+)"
+    example = "https://realbooru.com/index.php?page=post&s=view&id=12345"
+
+    def posts(self):
+        return (self._parse_post(self.groups[0]),)