Lua script that navigates to Trash folder and activates trashwdx columns

[advice2020]

I just made the following post #90 about an issue I am experiencing with the WDX trashwdx.lua script.

Because DC resorts back to its default Trash column set any time that folder is accessed,
I was wondering if anyone ever created/uses a simple script that would....

-navigates to trash:// folder
-then auto-loads custom column set generated using this trashwdx.lua script
to override the DC default Trash column set from appearing

If not, then would anyone be willing to create a Lua script to achieve this?
This way at least the Trash folder would be able to be opened with a hotkey and with users choice of columns to be viewed.

Thank you to anyone who reads this and for any help provided.

[j2969719]

https://doublecmd.github.io/doc/en/lua.html#dc_executecommand
https://doublecmd.github.io/doc/en/cmds.html#cm_ChangeDir
https://doublecmd.github.io/doc/en/cmds.html#cm_ColumnsView

[advice2020]

@j2969719
No I am aware of that.
ExecuteCommand only works with internal DC commands.
I had only asked about this thinking that maybe Lua script could in some way solve this issue.
But as you have mentioned in #90 not a bug and not possible to achieve using WDX plugins.
I will close this post as well.
Thank you again

[Skif-off]

Old script:

-- ListOfTrashFolders.lua (Linux only)
-- 2020.03.31
--[[
Find all available trash folders:
  ~/.local/share/Trash/files
  <mount point>/.Trash/<UID>/files
  <mount point>/.Trash-<UID>/files
where <UID> is user ID. Will be checked devices
  /dev/fd
  /dev/hd
  /dev/sd
  /dev/nvme

Command:
  cm_ExecuteScript
Parameters:
  /path/to/script/ListOfTrashFolders.lua

Optional parameters:
--new-tab
    open directory in new tab;
columnset
    switch to columns view (cm_ColumnsView) with user defined column set "columnset" ***
    (without quotes).
NOTE: If both parameters then "--new-tab" must be first!

*** For example, with trashwdx.lua (https://github.com/j2969719/doublecmd-plugins/blob/master/plugins/wdx/scripts/trashwdx.lua)
]]

local function GetUser()
  local h = io.popen('id')
  if not h then return nil end
  local o = h:read("*a")
  h:close()
  local i, s = string.match(o, 'uid=([^(]+)%(([^)]+)%)')
  if i == nil then
    return nil
  else
    return i, s
  end
end

local params = {...}

if #params > 2 then
  Dialogs.MessageBox('Check parameters!', 'ListOfTrashFolders', 0x0010)
  return
end

local list = {}
local uid, user = GetUser()
if uid == nil then
  Dialogs.MessageBox('Unknown error 1.', 'ListOfTrashFolders', 0x0010)
  return
end

if SysUtils.DirectoryExists('/home/' .. user .. '/.local/share/Trash/files') == true then
  table.insert(list, '/home/' .. user .. '/.local/share/Trash/files')
end

local td, tp
local mp = {}
local dev = {}
local h = io.open('/etc/mtab', 'r')
if not h then
  Dialogs.MessageBox('/etc/mtab: cannot be read.', 'ListOfTrashFolders', 0x0010)
  return
end
for l in h:lines() do
  t = string.sub(l, 1, 7)
  if (t == '/dev/fd') or (t == '/dev/hd') or (t == '/dev/sd') or (string.sub(l, 1, 9) == '/dev/nvme') then
    td, tp = string.match(l, '^([^ ]+) ([^ ]+) ')
    if td ~= nil then
      table.insert(dev, td)
      table.insert(mp, tp)
    end
  end
end
h:close()
if #mp > 0 then
  for i = 1, #mp do
    if SysUtils.DirectoryExists(mp[i] .. '/.Trash/' .. uid .. '/files') == true then
      table.insert(list, dev[i] .. ' (' .. mp[i] .. '/.Trash/' .. uid .. '/files)')
    end
    if SysUtils.DirectoryExists(mp[i] .. '/.Trash-' .. uid .. '/files') == true then
      table.insert(list, dev[i] .. ' (' .. mp[i] .. '/.Trash-' .. uid .. '/files)')
    end
  end
end

if #list == 0 then
  Dialogs.MessageBox('Not found.', 'ListOfTrashFolders', 0x0040)
  return
end
local r = Dialogs.InputListBox('All trash folders', #list .. ' folder(s) found:', list, 1)
if r == nil then return end
local n = string.find(r, ' (', 1, true)
if n ~= nil then r = string.sub(r, n + 2, -2) end
local nt, cs
if #params == 1 then
  if params[1] == '--new-tab' then
    nt = true
  else
    cs = params[1]
  end
elseif #params == 2 then
  nt = true
  cs = params[2]
end
if nt == true then DC.ExecuteCommand("cm_NewTab") end
DC.ExecuteCommand("cm_ChangeDir", r)
if cs ~= nil then
  DC.ExecuteCommand("cm_ColumnsView", "columnset=" .. cs)
end

(But I think it's better to check that the "files" subfolder is not empty.)