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 local function terminal_cmd(prg, name)
  17     local join = require("gears.table").join
  18     local term_cmd = {terminal}
  19     if name then
  20         if terminal:match("rxvt") then
  21             term_cmd = join(term_cmd, {"-name", name})
  22         end
  23     end
  24     return join(term_cmd, {"-e", prg})
  25 end
  26
  27 function utils.spawn_terminal(prg, cprop, cb)
  28     if not cprop then
  29         cprop = {}
  30     end
  31     local name = cprop.instance
  32     awful.spawn(terminal_cmd(prg, name), cprop, cb)
  33 end
  34
  35 function utils.spawn_terminal_once(prg, rules, matcher, unique_id, cb)
  36     local name = rules.instance
  37     awful.spawn.once(terminal_cmd(prg, name), rules, matcher, unique_id, cb)
  38 end
  39
  40 function utils.run_or_kill(prg, cprop, screen)
  41     if not prg then
  42         do return nil end
  43     end
  44
  45     if not cprop then
  46         cprop = { }
  47     end
  48
  49     if not cprop.class then
  50         cprop.class = prg
  51     end
  52
  53     if not cprop.instance then
  54         cprop.instance = ""
  55     end
  56
  57     cprop.class = string.lower(cprop.class)
  58     cprop.instance = string.lower(cprop.instance)
  59
  60     for k, c in pairs(client.get()) do
  61         -- apparently some steam games don't have a client class
  62         if c.class == nil then
  63             return
  64         end
  65         local class=string.lower(c.class)
  66         local instance=string.lower(c.instance)
  67         if string.match(class, cprop.class) and string.match(instance, cprop.instance) then
  68             for i, v in ipairs(c:tags()) do
  69                 c:kill()
  70                 return
  71             end
  72         end
  73     end
  74     awful.spawn.with_shell(prg, screen)
  75 end
  76
  77 -- http://awesome.naquadah.org/wiki/Autostart#Simple_way
  78 function utils.run_once(prg,arg_string,pname,screen)
  79     if not prg then
  80         do return nil end
  81     end
  82
  83     if not pname then
  84        pname = prg
  85     end
  86
  87     if not arg_string then
  88         awful.spawn.with_shell("pgrep -f -u $USER -x '" .. pname .. "' || (" .. prg .. ")",screen)
  89     else
  90         awful.spawn.with_shell("pgrep -f -u $USER -x '" .. pname .. " ".. arg_string .."' || (" .. prg .. " " .. arg_string .. ")",screen)
  91     end
  92 end
  93
  94 function utils.get_default_sink()
  95     local f = io.popen('pactl get-default-sink')
  96     line = f:read('*l')
  97     f:close()
  98     return string.match(line, "^sink%s*%d*%s*(.-)%s")
  99 end
 100
 101 function utils.joinTables(t1, t2)
 102     for k,v in ipairs(t2) do table.insert(t1, v) end return t1
 103 end
 104
 105 function utils.rules.append(rules)
 106     awful.rules.rules = gears.table.join(awful.rules.rules, rules)
 107 end
 108
 109 function utils.globalkeys.append(keys)
 110     globalkeys = gears.table.join(globalkeys, keys)
 111 end
 112
 113 function utils.has_battery()
 114     return utils.is_dir("/sys/class/power_supply/BAT0")
 115 end
 116
 117 return utils