shell.programs Question

Right now I have a disk connected via network cable and about 20 computers boot off of it. Here is what it contains:

shell.setPath("/os")

On the computer there is /os

and on the computer I have:

/os
/os/rom
/os/rom/programs

and apparently shell.programs does not recognize my 'programs' folder, so I have to set an alias for every program. Is there any way around this?

Looking at the shell source, it appears that aliases are indeed geared for use as shortcuts to files, not folders.

I suppose you could override shell.programs() in startup. Define a new version of the function - one that calls the original, adds the files from your extra programs folder to the output, then returns the result.

local oldPrograms = shell.programs

function shell.programs(_bIncludeHidden)
  local tItemList = oldPrograms(_bIncludeHidden)

  -- Get the list from /os/rom/programs, add it to tItemList, return it

Bomb Bloke, on 24 January 2015 - 11:14 PM said:

Looking at the shell source, it appears that aliases are indeed geared for use as shortcuts to files, not folders.

I suppose you could override shell.programs() in startup. Define a new version of the function - one that calls the original, adds the files from your extra programs folder to the output, then returns the result.

local oldPrograms = shell.programs

function shell.programs(_bIncludeHidden)
  local tItemList = oldPrograms(_bIncludeHidden)

  -- Get the list from /os/rom/programs, add it to tItemList, return it

I commented out all my aliases for my programs and added:

function shell.programs()
  local tbl = {}
  local programList = fs.list("/os/.rom/programs/")
  for _, program in ipairs(programList) do
    table.insert(tbl, program)
  end
  return tbl
end
textutils.pagedTabulate(shell.programs())

but this returns nothing

I don't really ever overwrite functions, but I believe it should be

shell.programs= function ()

instead of

function shell.programs()

If you are wanting to replace the original shell.programs() with your new code.

However I am not sure, I think the original should work since var=function () is equivalent to function var()

Edit: 2 things:
1. You have a '.', I assume that is on purpose so it is a hidden file, but just in case it was not intended and you did not notice.
2. Just for fun try pairs instead of ipairs, should not make a difference but you never know.

Quintuple Agent, on 25 January 2015 - 12:29 AM said:

However I am not sure, I think the original should work since var=function () is equivalent to function var()

They're not exactly the same (under certain circumstances: see this guide), but in this case it doesn't matter.

Likewise, ipairs should be suitable here. I reckon you hit the nail with the ".rom" thing.

Bomb Bloke, on 25 January 2015 - 01:20 AM said:

Quintuple Agent, on 25 January 2015 - 12:29 AM said:

However I am not sure, I think the original should work since var=function () is equivalent to function var()

They're not exactly the same (under certain circumstances: see this guide), but in this case it doesn't matter.

Likewise, ipairs should be suitable here. I reckon you hit the nail with the ".rom" thing.

.rom was intentional because I did not want the client of the computer seeing it

How about we simplify things?:

function shell.programs()
  return fs.list("/os/.rom/programs/")
end
textutils.pagedTabulate(shell.programs())

jubba890, on 25 January 2015 - 01:46 AM said:

Bomb Bloke, on 25 January 2015 - 01:20 AM said:

Quintuple Agent, on 25 January 2015 - 12:29 AM said:

However I am not sure, I think the original should work since var=function () is equivalent to function var()

They're not exactly the same (under certain circumstances: see this guide), but in this case it doesn't matter.

Likewise, ipairs should be suitable here. I reckon you hit the nail with the ".rom" thing.

.rom was intentional because I did not want the client of the computer seeing it

Now say if I have a program with the directory of: /os/.rom/programs/test
and I type: test
I get: No such program, how would I make it so when I type: test
it goes to: /os/.rom/programs/test

Looks like you really want to make use of shell.setPath():

shell.setPath(shell.getPath()..":/os/.rom/programs")