[chronos] add extractor

gallery_dl/extractor/__init__.py

@@ -18,6 +18,7 @@ modules = [
     "4chan",
     "8chan",
     "batoto",
+    "chronos",
     "danbooru",
     "deviantart",
     "e621",

gallery_dl/extractor/chronos.py

@@ -0,0 +1,43 @@
+# -*- coding: utf-8 -*-
+
+# Copyright 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 images from http://chronos.to/"""
+
+from .common import Extractor, Message
+from .. import text
+
+class ChronosExtractor(Extractor):
+
+    category = "chronos"
+    directory_fmt = ["{category}"]
+    filename_fmt = "{filename}"
+    pattern = [r"(?:https?://)?(?:www\.)?chronos\.to/([a-z0-9]{12})"]
+
+    def __init__(self, match):
+        Extractor.__init__(self)
+        self.token = match.group(1)
+
+    def items(self):
+        params = {
+            "op": "view",
+            "id": self.token,
+            "pre": 1,
+            "next": "Continue to image.",
+        }
+        page = self.request("http://chronos.to/" + self.token, method="post",
+                            data=params).text
+        url     , pos = text.extract(page, '<img src="', '"')
+        filename, pos = text.extract(page, ' alt="', '"', pos)
+        data = {
+            "category": self.category,
+            "token": self.token,
+        }
+        text.nameext_from_url(filename, data)
+        yield Message.Version, 1
+        yield Message.Directory, data
+        yield Message.Url, url, data