[vsco] add 'avatar' extractor (#5341)

docs/supportedsites.md

@@ -940,7 +940,7 @@ Consider all listed sites to potentially be NSFW.
 <tr>
     <td>VSCO</td>
     <td>https://vsco.co/</td>
-    <td>Collections, individual Images, Spaces, User Profiles</td>
+    <td>Avatars, Collections, individual Images, Spaces, User Profiles</td>
     <td></td>
 </tr>
 <tr>

gallery_dl/extractor/vsco.py

@@ -46,6 +46,8 @@ class VscoExtractor(Extractor):
                     url = "https://image-{}.vsco.co/{}".format(cdn, path)
                 elif cdn.isdecimal():
                     url = "https://image.vsco.co/" + base
+                elif img["responsive_url"].startswith("http"):
+                    url = img["responsive_url"]
                 else:
                     url = "https://" + img["responsive_url"]
 
@@ -238,6 +240,34 @@ class VscoSpacesExtractor(VscoExtractor):
             yield Message.Queue, url, space
 
 
+class VscoAvatarExtractor(VscoExtractor):
+    """Extractor for vsco.co user avatars"""
+    subcategory = "avatar"
+    pattern = USER_PATTERN + r"/avatar"
+    example = "https://vsco.co/USER/avatar"
+
+    def images(self):
+        url = "{}/{}/gallery".format(self.root, self.user)
+        page = self.request(url).text
+        piid = text.extr(page, '"profileImageId":"', '"')
+
+        url = "https://im.vsco.co/" + piid
+        # needs GET request, since HEAD does not redirect to full URL
+        response = self.request(url, allow_redirects=False)
+
+        return ({
+            "_id"           : piid,
+            "is_video"      : False,
+            "grid_name"     : "",
+            "upload_date"   : 0,
+            "responsive_url": response.headers["Location"],
+            "video_url"     : "",
+            "image_meta"    : None,
+            "width"         : 0,
+            "height"        : 0,
+        },)
+
+
 class VscoImageExtractor(VscoExtractor):
     """Extractor for individual images on vsco.co"""
     subcategory = "image"

test/results/vsco.py

@@ -55,6 +55,16 @@ __tests__ = (
     ),
 },
 
+{
+    "#url"     : "https://vsco.co/vsco/avatar",
+    "#category": ("", "vsco", "avatar"),
+    "#class"   : vsco.VscoAvatarExtractor,
+    "#urls"         : "https://image-aws-us-west-2.vsco.co/3c69ae/304128/652d9f3b39a6007526dda683/vscoprofile-avatar.jpg",
+    "#sha1_content" : "57cd648759e34a6daefc5c79542ddb4595b9b677",
+
+    "id": "652d9f3b39a6007526dda683",
+},
+
 {
     "#url"     : "https://vsco.co/erenyildiz/media/5d34b93ef632433030707ce2",
     "#category": ("", "vsco", "image"),