qutebrowser-client

#!/usr/bin/env ruby

# A wrapper for qutebrowser to open links faster
# Tested on Ruby 2.3+
# Usage:
#   $ qutebrowser-client [urls ... ]

require 'digest'
require 'json'
require 'socket'

PROTOCOL_VERSION = 1

def help(exit_code: 1)
  puts "Usage: #{$PROGRAM_NAME} [urls ... ]"
  exit(exit_code)
end

def run_dir
  ENV['XDG_RUNTIME_DIR'] || "/run/user/#{ENV['UID']}"
end

def ipc_hash
  Digest::MD5.hexdigest(ENV['USER'])
end

def socket_path
  "#{run_dir}/qutebrowser/ipc-#{ipc_hash}"
end

def request(url)
  JSON.generate(args: [url],
                target_arg: :tab,
                protocol_version: PROTOCOL_VERSION)
end

def open_in_existing(urls)
  socket = UNIXSocket.new(socket_path)
  urls.each { |url| socket.puts(request(url)) }
end

def open_in_new(urls)
  spawn("qutebrowser #{urls.join(' ')}")
end

if $PROGRAM_NAME == __FILE__
  help(exit_code: 1) if ARGV.empty?

  if File.exist?(socket_path)
    warn 'Found IPC socket, sending urls'
    open_in_existing(ARGV)
  else
    warn 'No IPC socket found, starting qutebrowser'
    open_in_new(ARGV)
  end
end