[imagechest] Add new extractor for ImageChest (#750)

* [imagechest] Add new extractor for ImageChest

* [imagechest] Fix flake8 compliance issues

gallery_dl/extractor/__init__.py

@@ -48,6 +48,7 @@ modules = [
     "hypnohub",
     "idolcomplex",
     "imagebam",
+    "imagechest",
     "imagefap",
     "imgbb",
     "imgbox",

gallery_dl/extractor/imagechest.py

@@ -0,0 +1,66 @@
+# -*- coding: utf-8 -*-
+
+# Copyright 2014-2020 Leonid "Bepis" Pavel
+#
+# 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 images from galleries at https://imgchest.com/"""
+
+from .common import GalleryExtractor
+from .. import text, exception
+import re
+
+
+class ImagechestGalleryExtractor(GalleryExtractor):
+    """Extractor for image galleries from imgchest.com"""
+
+    category = "imagechest"
+    root = "https://imgchest.com"
+
+    pattern = r"(?:https?://)?(?:www\.)?imgchest\.com/p/([A-Za-z0-9]{11})"
+    test = (
+        ("https://imgchest.com/p/3na7kr3by8d", {
+            "url": "f095b4f78c051e5a94e7c663814d1e8d4c93c1f7",
+            "content": "076959e65be30249a2c651fbe6090dc30ba85193",
+            "count": 3
+        }),
+    )
+
+    def __init__(self, match):
+
+        self.gallery_id = match.group(1)
+        url = self.root + "/p/" + self.gallery_id
+
+        GalleryExtractor.__init__(self, match, url)
+
+    def metadata(self, page):
+        """Return a dict with general metadata"""
+
+        if "Sorry, but the page you requested could not be found." in page:
+            raise exception.NotFoundError("gallery")
+
+        title_match = re.search(
+            r'<meta property="og:title" content="([^"]+)"/>',
+            page)
+
+        title = title_match.group(1).strip()
+
+        return {
+            "gallery_id": self.gallery_id,
+            "title": text.unescape(title)
+        }
+
+    def images(self, page):
+        """Return a list of all (image-url, metadata)-tuples"""
+
+        image_keys = re.findall(
+            r'<meta property="og:image" content="([^"]+)"/>',
+            page)
+
+        for imgurl in image_keys:
+
+            data = text.nameext_from_url(imgurl)
+
+            yield imgurl, data

scripts/supportedsites.py

@@ -44,6 +44,7 @@ CATEGORY_MAP = {
     "imagefap"       : "ImageFap",
     "imgbb"          : "ImgBB",
     "imgbox"         : "imgbox",
+    "imagechest"     : "ImageChest",
     "imgth"          : "imgth",
     "imgur"          : "imgur",
     "jaiminisbox"    : "Jaimini's Box",