qutebrowser: add code block copying

src/.config/qutebrowser/config.py

@@ -83,7 +83,7 @@ c.content.headers.custom = {"accept": "text/html,application/xhtml+xml,applicati
 # Sending a Do Not Track header makes your fingerprint more unique according to Panopticlick,
 # and I don't trust sites to respect it, so I think it's better to not include it at all.
 # (True: send DNT, False: Send DNT header set to 0, None: Don't send DNT)
-c.content.headers.do_not_track = None;
+c.content.headers.do_not_track = None
 
 # Block certain trackers
 c.content.canvas_reading = False
@@ -95,3 +95,10 @@ config.bind("#", "set-cmd-text -s :scroll-to-anchor ")
 config.bind(";I", "hint images yank")
 # This overrides pP because I don't use primary clip
 config.bind("p", "open -t {clipboard}")
+
+# code block copying
+c.hints.selectors["code"] = [
+    ":not(pre) > code",
+    "pre"
+]
+config.bind("cc", "hint code userscript code_select.py")

src/.local/share/qutebrowser/userscripts/code_select.py

@@ -0,0 +1,57 @@
+#!/usr/bin/env python3
+
+import os
+import html
+import re
+import sys
+import xml.etree.ElementTree as ET
+try:
+    import pyperclip
+except ImportError:
+    try:
+        import pyclip as pyperclip
+    except ImportError:
+        PYPERCLIP = False
+    else:
+        PYPERCLIP = True
+else:
+    PYPERCLIP = True
+
+
+def parse_text_content(element):
+    root = ET.fromstring(element)
+    text = ET.tostring(root, encoding="unicode", method="text")
+    text = html.unescape(text)
+    return text
+
+
+def send_command_to_qute(command):
+    with open(os.environ.get("QUTE_FIFO"), "w") as f:
+        f.write(command)
+
+
+def main():
+    delimiter = sys.argv[1] if len(sys.argv) > 1 else ";"
+    # For info on qute environment vairables, see
+    # https://github.com/qutebrowser/qutebrowser/blob/master/doc/userscripts.asciidoc
+    element = os.environ.get("QUTE_SELECTED_HTML")
+    code_text = parse_text_content(element)
+    if PYPERCLIP:
+        pyperclip.copy(code_text)
+        send_command_to_qute(
+            "message-info 'copied to clipboard: {info}{suffix}'".format(
+                info=code_text.splitlines()[0],
+                suffix="..." if len(code_text.splitlines()) > 1 else ""
+            )
+        )
+    else:
+        # Qute's yank command  won't copy accross multiple lines so we
+        # compromise by placing lines on a single line seperated by the
+        # specified delimiter
+        code_text = re.sub("(\n)+", delimiter, code_text)
+        code_text = code_text.replace("'", "\"")
+        send_command_to_qute("yank inline '{code}'\n".format(code=code_text))
+
+
+if __name__ == "__main__":
+    main()