Hammerspoon Mode

init.lua

-- hotload config
function reloadConfig(files)
   doReload = false
   for _,file in pairs(files) do
      if file:sub(-4) == ".lua" then
         doReload = true
      end
   end

   if doReload then
      result, success = hs.execute("luac -p ~/.hammerspoon/init.lua 2>&1 >/dev/null", true)
      if not success then
         hs.alert(result)
         return
      end

      result, success = hs.execute("luac -p ~/.hammerspoon/Spoons/KeyFu.spoon/init.lua 2>&1 >/dev/null", true)

      if not success then
         hs.alert(result)
         return
      end

      hs.reload()
   end
end

hs_config_watcher = hs.pathwatcher.new(os.getenv("HOME") .. "/.hammerspoon/", reloadConfig):start()
hs.alert.show("Config loaded.")


-- toggle between chrome and iterm using ctrl t
hs.hotkey.bind({'ctrl'}, "t", function()
      app_name = hs.application.frontmostApplication():name()
      if app_name == 'iTerm2' then
         hs.osascript.applescript('tell application "Chrome" to activate')
      else
         hs.osascript.applescript('tell application "iTerm" to activate')
      end
end)

-- global command mode for hammersppon because I'm insane
-- ctrl m to go into hammerspoon mode
g_mod_keys = true
g_hs_mode = false
g_hs_mode_command = ''

hs.hotkey.bind({'ctrl'}, "m", function()
    if not g_hs_mode then
        hs.alert('hs mode: on')
	g_hs_mode = true
    end
end)

hs_mode_handler = function(evt)
   local new_mods = evt:getFlags()
   if not g_hs_mode then
      return
   end

   if evt:getCharacters(true) then
      g_hs_mode_command = g_hs_mode_command .. evt:getCharacters(true)
   end

   local was_processed = false

   if evt:getCharacters(true) == 'i' then --exit hammerspoon mode
      was_processed = true
      hs.alert('hs mode: off')
   elseif g_hs_mode_command == 'go' then -- open google
      shell('open http://google.com')
      was_processed = true
   end

   if was_processed then
      g_hs_mode = false
      g_hs_mode_command = ''
      return true
   end

   if string.len(g_hs_mode_command) > 2 then
      hs.alert("exiting (unknown command): " .. g_hs_mode_command)
      g_hs_mode = false
      g_hs_mode_command = ''
   end

   return true
end

hs_mode = hs.eventtap.new({hs.eventtap.event.types.keyDown}, hs_mode_handler)
hs_mode:start()