Add IEEE Spectrum Magazine recipe

recipes/ieee_spectrum_mag.recipe

@@ -0,0 +1,29 @@
+#!/usr/bin/env python
+# vim:fileencoding=utf-8
+
+from calibre.web.feeds.news import BasicNewsRecipe
+import datetime
+
+class IEEESpectrumMagazine(BasicNewsRecipe):
+    title          = "IEEE Spectrum Magazine"
+    description    = "Published on day 1 of every month."
+    oldest_article = 120  # Mag gathers articles published older than a month online. So we scan for 4 months in the feed.
+    max_articles_per_feed = 100
+    auto_cleanup   = True
+    
+    # RSS feed for the current month
+    now = datetime.datetime.now()
+    year_month = now.strftime("%Y/%B").lower()
+    month_feed_url = "https://spectrum.ieee.org/feeds/magazine/{}.rss".format(year_month)
+
+    feeds          = [
+        ('IEEE Spectrum Magazine', month_feed_url),
+    ]
+
+    def get_cover_url(self):
+        """Go to this month's URL and pull cover image from there."""
+        month_url = "https://spectrum.ieee.org/magazine/{}".format(self.year_month)
+        soup = self.index_to_soup(month_url)
+        img_meta = soup.find("meta", property="og:image")
+        img_url = img_meta["content"]
+        return img_url