awesome: add submodule for awesompd

[dotfiles.git] / awesome / widgets / awesompd / asyncshell.lua

diff --git a/awesome/widgets/awesompd/asyncshell.lua b/awesome/widgets/awesompd/asyncshell.lua
deleted file mode 100755 (executable)
index c62284e..0000000
--- a/awesome/widgets/awesompd/asyncshell.lua
+++ /dev/null
@@ -1,71 +0,0 @@
--- Asynchronous io.popen for Awesome WM.
--- How to use...
--- ...asynchronously:
--- asyncshell.request('wscript -Kiev', function(f) wwidget.text = f:read("*l") end)
--- ...synchronously
--- wwidget.text = asyncshell.demand('wscript -Kiev', 5):read("*l") or "Error"
-
-local awful = require('awful')
-
-asyncshell = {}
-asyncshell.request_table = {}
-asyncshell.id_counter = 0
-asyncshell.folder = "/tmp/asyncshell"
-asyncshell.file_template = asyncshell.folder .. '/req'
-
--- Create a directory for asynchell response files
-os.execute("mkdir -p " .. asyncshell.folder)
-
--- Returns next tag - unique identifier of the request
-local function next_id()
-   asyncshell.id_counter = (asyncshell.id_counter + 1) % 100000
-   return asyncshell.id_counter
-end
-
--- Sends an asynchronous request for an output of the shell command.
--- @param command Command to be executed and taken output from
--- @param callback Function to be called when the command finishes
--- @return Request ID
-function asyncshell.request(command, callback)
-   local id = next_id()
-   local tmpfname = asyncshell.file_template .. id
-   asyncshell.request_table[id] = {callback = callback}
-   local req =
-      string.format("bash -c '%s > %s; " ..
-                    'echo "asyncshell.deliver(%s)" | ' ..
-                    "awesome-client' 2> /dev/null",
-                 string.gsub(command, "'", "'\\''"), tmpfname, id, tmpfname)
-   awful.util.spawn(req, false)
-   return id
-end
-
--- Calls the remembered callback function on the output of the shell
--- command.
--- @param id Request ID
--- @param output The output file of the shell command to be delievered
-function asyncshell.deliver(id)
-   if asyncshell.request_table[id] and
-      asyncshell.request_table[id].callback then
-      local output = io.open(asyncshell.file_template .. id, 'r')
-      asyncshell.request_table[id].callback(output)
-   end
-end
-
--- Sends a synchronous request for an output of the command. Waits for
--- the output, but if the given timeout expires returns nil.
--- @param command Command to be executed and taken output from
--- @param timeout Maximum amount of time to wait for the result
--- @return File handler on success, nil otherwise
-function asyncshell.demand(command, timeout)
-   local id = next_id()
-   local tmpfname = asyncshell.file_template .. id
-   local f = io.popen(string.format("(%s > %s; echo asyncshell_done) & " ..
-                                    "(sleep %s; echo asynchell_timeout)",
-                                    command, tmpfname, timeout))
-   local result = f:read("*line")
-   if result == "asyncshell_done" then
-      return io.open(tmpfname)
-   end
-end
-
-return asyncshell