function GlobalConfigFields()
  return {}
end

function InstanceConfigFields()
  return {}
end

function InstanceConfigEvents()
  return { ["form-out"] = "change" }
end

function runcmd( cmd )
    local stderr = os.tmpname()
    local stdout = os.tmpname()

    local rc = os.execute( cmd .. ' > ' .. stdout .. ' 2> ' .. stderr )

    local sefh = io.open( stderr )
    local sofh = io.open( stdout )

    local stderr = sefh:read( "*all" )
    local stdout = sofh:read( "*all" )

    sefh:close()
    sofh:close()

    return rc, stdout, stderr
end

function FormOut()
    local adir = Helix.Core.Server.GetArchDirFileName( "" )
    local ddir = Helix.Core.Server.GetDataDirFileName( "" )
    -- Convert to Windows-local separators.
    adir = adir:gsub( "/", "\\" )
    ddir = ddir:gsub( "/", "\\" )
    local port = Helix.Core.Server.GetVar( "serverport" )
    local user = Helix.Core.Server.GetVar( "user" )
    local form = Helix.Core.Server.GetVar( "formfile" )

    -- Use a batch file to set up Python.  This indirection lets
    -- us set environmental variables and whatever else we might
    -- need to do outside of the Extension runtime.
    
    local cmd = '"' .. adir .. '\\setenv.bat"' .. ' "' .. ddir .. '"'
		.. ' -p ' .. port .. ' -u ' .. user .. ' perforce '
		.. ' "' .. form .. '"'

    local rc, stdout, stderr = runcmd( cmd )

    if rc == nil or string.len( stderr ) > 0 then
      local msg = "Error running wrapped trigger:  " .. stdout
                  .. stderr .. "\n" .. cmd
      Helix.Core.Server.SetClientMsg( msg )
      return false
    end

    if string.len( stdout ) > 0 then
      Helix.Core.Server.SetClientMsg( stdout )
    end

  return true
end