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.spawn_terminal(prg, cprop, cb)
  17     local join = require("gears.table").join
  18     local term_cmd = {terminal}
  19     if cprop and cprop.instance then
  20         if terminal:match("rxvt") then
  21             term_cmd = join(term_cmd, {"-name", cprop.instance})
  22         end
  23     end
  24     awful.spawn(join(term_cmd, {"-e", prg}), cprop, cb)
  25 end
  26
  27 function utils.run_or_kill(prg, cprop, screen)
  28     if not prg then
  29         do return nil end
  30     end
  31
  32     if not cprop then
  33         cprop = { }
  34     end
  35
  36     if not cprop.class then
  37         cprop.class = prg
  38     end
  39
  40     if not cprop.instance then
  41         cprop.instance = ""
  42     end
  43
  44     cprop.class = string.lower(cprop.class)
  45     cprop.instance = string.lower(cprop.instance)
  46
  47     for k, c in pairs(client.get()) do
  48         -- apparently some steam games don't have a client class
  49         if c.class == nil then
  50             return
  51         end
  52         local class=string.lower(c.class)
  53         local instance=string.lower(c.instance)
  54         if string.match(class, cprop.class) and string.match(instance, cprop.instance) then
  55             for i, v in ipairs(c:tags()) do
  56                 c:kill()
  57                 return
  58             end
  59         end
  60     end
  61     awful.spawn.with_shell(prg, screen)
  62 end
  63
  64 -- http://awesome.naquadah.org/wiki/Autostart#Simple_way
  65 function utils.run_once(prg,arg_string,pname,screen)
  66     if not prg then
  67         do return nil end
  68     end
  69
  70     if not pname then
  71        pname = prg
  72     end
  73
  74     if not arg_string then
  75         awful.spawn.with_shell("pgrep -f -u $USER -x '" .. pname .. "' || (" .. prg .. ")",screen)
  76     else
  77         awful.spawn.with_shell("pgrep -f -u $USER -x '" .. pname .. " ".. arg_string .."' || (" .. prg .. " " .. arg_string .. ")",screen)
  78     end
  79 end
  80
  81 function utils.get_default_sink()
  82     local f = io.popen('ponymix defaults --short')
  83     line = f:read('*l')
  84     f:close()
  85     return string.match(line, "^sink%s*%d*%s*(.-)%s")
  86 end
  87
  88 function utils.joinTables(t1, t2)
  89     for k,v in ipairs(t2) do table.insert(t1, v) end return t1
  90 end
  91
  92 function utils.rules.append(rules)
  93     awful.rules.rules = gears.table.join(awful.rules.rules, rules)
  94 end
  95
  96 function utils.globalkeys.append(keys)
  97     globalkeys = gears.table.join(globalkeys, keys)
  98 end
  99
 100 function utils.has_battery()
 101     return utils.is_dir("/sys/class/power_supply/BAT0")
 102 end
 103
 104 return utils