qutebrowser userscript: 'read' (emulates vim's 'read' command)

read

#!/usr/bin/env python3
#
# This script is a userscript for qutebrowser. Written by Pkill9. Contact me on IRC at #qutebrowser on Freenode for any questions.
#
# Emulates vim's 'read' command
#
# WARNING: the command outputs are stored in qutebrowser's
#           debug log reachable via the url qute://log

import os
from sys import argv
import subprocess

def sanitise_text(text):
    text = text.replace('\\', '\\\\')
    text = text.replace('\n', '\\n')
    text = text.replace("'", r"\'")
    text = text.replace('"', r'\"')
    text = text.replace(')', '\)')
    text = text.replace('(', '\(')
    text = text.replace('{', '\{')
    text = text.replace('}', '\}')

    return text

def exec_qb(command):
    with open(os.environ['QUTE_FIFO'], 'w') as f:
        f.write(command)

def insert_to_active_element(text):
    text = sanitise_text(text)
    js="document.activeElement.value += '{}';".format(text)
    command = "jseval -q {}".format(js)
    exec_qb(command)

if __name__ == "__main__":

    if len(argv) > 1 and argv[1][0] == '!':
        command = ' '.join(argv[1:])
        command = command[1:] #Remove first exclamation mark
        command = command.strip()
        cmd_output = subprocess.check_output(command, shell=True).decode()

        insert_to_active_element(cmd_output)

    elif len(argv) > 1:

        with open(argv[1]) as f:
            file_output = f.read().strip()

        insert_to_active_element(file_output)