qutebrowser: Add doi2scihub script

Added script which takes you to the corresponding sci-hub entry for any
DOI. DOIs can be passed in three ways:

- via hinted link (shortcut `;p` to start hinting)
- via selected text (select text then invoke `send-to-scihub` command
  with `"p`)
- or from meta tags in current page (invoke `send-to-scihub` command
  with `"p` when on article page)

It will grab the newest sci-hub link and attempt to bring you the
corresponding pdf file.

qutebrowser/.config/qutebrowser/alias.py

@@ -16,6 +16,8 @@ c.aliases["send-to-archive"] = "open https://web.archive.org/web/{url}"
 
 # save current page to pdf file
 c.aliases["save_to_pdf"] = "spawn --userscript pagetopdf.sh"
+# open sci-hub pdf for doi
+c.aliases["send-to-scihub"] = "spawn --userscript doi2scihub"
 
 # translate current page / selection with google translate
 c.aliases["translate-page-google"] = "spawn --userscript translate_google.sh"

qutebrowser/.config/qutebrowser/maps.py

@@ -77,6 +77,8 @@ config.bind('"T', "translate-selection-google", mode="normal")
 config.bind('"q', "show-qr")
 
 config.bind(lleader + "r", "spawn --userscript readability")
+config.bind('"p', "send-to-scihub", mode="normal")  # view current page doi on scihub
+config.bind(";p", "hint links run send-to-scihub")  # view linked doi on scihub
 
 # set stylesheets for the browser to use
 config.bind(

qutebrowser/.config/qutebrowser/url.py

@@ -1,7 +1,7 @@
 from qutebrowser.api import interceptor
 
 c.url.searchengines = {
-    "#sci": "https://sci-hub.do/{}",
+    "sci": "https://sci-hub.ru/{}",
     "DEFAULT": "https://search.martyoeh.me/?q={}",
     "al": "https://wiki.archlinux.org/index.php/{}",
     "alt": "https://alternativeto.net/software/{}/?license=opensource",