awesome/utils.lua

   1 local utils  = { }
   2 local io     = { popen = io.popen }
   3 local string = { match = string.match,
   4                  lower = string.lower}
   5
   6 utils.rules = { }
   7 utils.globalkeys = { }
   8
   9 local host = io.popen("hostname")
  10 utils.host = host:read("*l")
  11
  12 function utils.is_dir(path)
  13     return os.execute(('[ -d "%s" ]'):format(path))
  14 end
  15
  16 function utils.run_or_kill(prg, cprop, screen)
  17     if not prg then
  18         do return nil end
  19     end
  20
  21     if not cprop then
  22         cprop = { }
  23     end
  24
  25     if not cprop.class then
  26         cprop.class = prg
  27     end
  28
  29     if not cprop.instance then
  30         cprop.instance = ""
  31     end
  32
  33     cprop.class = string.lower(cprop.class)
  34     cprop.instance = string.lower(cprop.instance)
  35
  36     for k, c in pairs(client.get()) do
  37         -- apparently some steam games don't have a client class
  38         if c.class == nil then
  39             return
  40         end
  41         local class=string.lower(c.class)
  42         local instance=string.lower(c.instance)
  43         if string.match(class, cprop.class) and string.match(instance, cprop.instance) then
  44             for i, v in ipairs(c:tags()) do
  45                 c:kill()
  46                 return
  47             end
  48         end
  49     end
  50     awful.util.spawn_with_shell(prg, screen)
  51 end
  52
  53 -- http://awesome.naquadah.org/wiki/Autostart#Simple_way
  54 function utils.run_once(prg,arg_string,pname,screen)
  55     if not prg then
  56         do return nil end
  57     end
  58
  59     if not pname then
  60        pname = prg
  61     end
  62
  63     if not arg_string then
  64         awful.util.spawn_with_shell("pgrep -f -u $USER -x '" .. pname .. "' || (" .. prg .. ")",screen)
  65     else
  66         awful.util.spawn_with_shell("pgrep -f -u $USER -x '" .. pname .. " ".. arg_string .."' || (" .. prg .. " " .. arg_string .. ")",screen)
  67     end
  68 end
  69
  70 function utils.get_default_sink()
  71     local f = io.popen('ponymix defaults --short')
  72     line = f:read('*l')
  73     f:close()
  74     return string.match(line, "^sink%s*%d*%s*(.-)%s") or ""
  75 end
  76
  77 function utils.joinTables(t1, t2)
  78     for k,v in ipairs(t2) do table.insert(t1, v) end return t1
  79 end
  80
  81 function utils.rules.append(rules)
  82     awful.rules.rules = awful.util.table.join(awful.rules.rules, rules)
  83 end
  84
  85 function utils.globalkeys.append(keys)
  86     globalkeys = awful.util.table.join(globalkeys, keys)
  87 end
  88
  89 function utils.has_battery()
  90     return utils.is_dir("/sys/class/power_supply/BAT0")
  91 end
  92
  93 return utils