X-Git-Url: https://git.rmz.io/dotfiles.git/blobdiff_plain/3beaf9036986d749752eb658a7c83a1c69d04dd4..f737a40a8269639bb3364df31c4d9888e9f12d98:/awesome/widgets/awesompd/asyncshell.lua?ds=inline diff --git a/awesome/widgets/awesompd/asyncshell.lua b/awesome/widgets/awesompd/asyncshell.lua deleted file mode 100755 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