[danbooru] update to new extractor interface

gallery_dl/extractor/danbooru.py

@@ -1,62 +1,27 @@
-from .common import AsyncExtractor
-from ..util import filename_from_url
-import xml.etree.ElementTree as ET
-import json
-import urllib.parse
+# -*- coding: utf-8 -*-
 
-class BooruExtractor(AsyncExtractor):
+# Copyright 2014, 2015 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.
+
+"""Extract image-urls from https://danbooru.donmai.us/"""
+
+from .booru import JSONBooruExtractor
+
+info = {
+    "category": "danbooru",
+    "extractor": "DanbooruExtractor",
+    "directory": ["{category}", "{tags}"],
+    "filename": "{category}_{name}",
+    "pattern": [
+        r"(?:https?://)?(?:www\.)?danbooru.donmai.us/posts\?(?:utf8=%E2%9C%93&)?tags=([^&]+).*",
+    ],
+}
+
+class DanbooruExtractor(JSONBooruExtractor):
 
     def __init__(self, match, config):
-        AsyncExtractor.__init__(self, config)
-        self.tags      = urllib.parse.unquote(match.group(1))
-        self.category  = "booru"
-        self.params    = {"tags": self.tags}
-        self.page      = "page"
-        self.directory = self.tags.replace("/", "_")
-
-    def update_page(self, reset=False):
-        # Override this method in derived classes if necessary.
-        # It is usually enough to adjust the 'page' attribute
-        if reset is False:
-            self.params[self.page] += 1
-        else:
-            self.params[self.page]  = 1
-
-class JSONBooruExtractor(BooruExtractor):
-
-    def images(self):
-        self.update_page(reset=True)
-        while True:
-            images = json.loads(
-                self.request(self.api_url, verify=True, params=self.params).text
-            )
-            if len(images) == 0:
-                return
-            for img in images:
-                url  = urllib.parse.urljoin(self.api_url, img["file_url"])
-                name = "{}_{}".format(self.category, filename_from_url(url))
-                yield url, name
-            self.update_page()
-
-class XMLBooruExtractor(BooruExtractor):
-
-    def images(self):
-        self.update_page(reset=True)
-        while True:
-            root = ET.fromstring(
-                self.request(self.api_url, verify=True, params=self.params).text
-            )
-            if len(root) == 0:
-                return
-            for item in root:
-                url  = item.attrib["file_url"]
-                name = "{}_{}".format(self.category, filename_from_url(url))
-                yield url, name
-            self.update_page()
-
-class Extractor(JSONBooruExtractor):
-
-    def __init__(self, match, config):
-        JSONBooruExtractor.__init__(self, match, config)
-        self.category = "danbooru"
+        JSONBooruExtractor.__init__(self, match, config, info)
         self.api_url  = "https://danbooru.donmai.us/posts.json"