Folder and file permission columns

[advice2020]

Linux / Debian based

I have seen that there are some permission/attribute based plugins available.
I was wondering if anyone would consider making something like the following.
Not sure if something like this could be achieved using only Lua without need for 3rd party application? but either way.

Suggesting to create a WDX plugin that would provide columns for folder and file permissions.
This plugin would contain 10 columns (or more if anyone has any other ideas to add to this suggestion?)

-The first column I will mention probably is not really needed because it is already offered by DC, called Attributes, which shows the "text" value of permissions.
If this is easy to achieve, I say to add this just because it would make this plugin capable of handling all permission columns within the same plugin, but again not important if difficult/do not agree.

-In Linux I know what the "text" values mean but to be honest when viewing them I just see letters. Suggesting to offer columns for single permission values (as seen in check box grid in cm_SetFileProperties command dialog), so the other 9 columns would be the following (one for each)

Owner Read / Owner Write / Owner Execute
Group Read / Group Write / Group Execute
Other Read / Other Write / Other Execute

I do not like because it is the opposite of how the dialog check box grid looks, but I think my following suggestion will work better in column view to be the opposite.

So each of these columns would get a value On/Off.
Because permissions being On is more common, I would say
On = blank no value
Off = x or X or Off
This would make the Off values stand out to user.

Again it is the opposite of the grid that uses "check" for On so hopefully in actual use this is not too confusing for the user? Would have to test this out to verify.
If this does make sense, then this could be the default, but if not the good thing is that these on/off text values could be changed in the Lua / cpp file.

If anyone is interested in this, please let me know.
Also again, if anyone has any other suggestions that could be added to this, please mention them.

Thank You

[Skif-off]

What about gfileinfo?

Maybe something like

-- filepermissionswdx.lua (Linux)
-- 2025.07.06
--[[
Returns file permissions.
Details: https://github.com/j2969719/doublecmd-plugins/discussions/53
]]

local fields = {"Owner", "Group", "Other"}

function ContentGetSupportedField(FieldIndex)
  if fields[FieldIndex + 1] ~= nil then
    return fields[FieldIndex + 1], "Read|Write|Execute", 6
  end
  return "", "", 0
end

function ContentGetDefaultSortOrder(FieldIndex)
  return 1; --or -1
end

function ContentGetDetectString()
  return 'EXT="*"'
end

function ContentGetValue(FileName, FieldIndex, UnitIndex, flags)
  if FieldIndex > 2 then return nil end
  local sA = SysUtils.GetFileProperty(FileName, 1)
  if sA == nil then return nil end
  local i = FieldIndex * 3 + UnitIndex + 2
  local t = string.sub(sA, i, i)
  if t == "" then
    return nil
  elseif t == "-" then
    return false
  else
    return true
  end
end

?
DC 1.2.0+. In theory, it will be faster because SysUtils.GetFileProperty() can use the information that has already been received and displayed.
Returns a boolean value (True/False) instead of On/Off.

[j2969719]

https://github.com/j2969719/doublecmd-plugins/tree/master/plugins/wdx/simplefileinfo also has string and boolean fields for permissions from the current user perspective, not from owner/group/others

buuut the thing with wdx is that they will always be slower than dc's built-in fields (especially noticeable when scrolling) and will only work with the local file system.

[advice2020]

@Skif-off
@j2969719
Thank you guys for your responses.
I decided to try the Lua script provided based on both of your comments about speed.

Skif-off
As mentioned I tested the Lua script you created, thank you for creating this, this works great!
I cannot confirm if older versions are slower but when tested in DC 1.2.0+ this does work really fast.
Did not notice any speed issues during any tests.
True/False is fine with me as long as it works.
Thank you again for creating this.

j2969719
Skif-off
Not sure if you guys agree, but I think this script is worth adding into this collection.

Thanks again