Phil Davis wrote:
> I did a little more homework and decided to make one small change. The
> system_profiler option (parameter) as originally coded doesn't work as
> expected on my PowerPC Mac running 10.3.9; it has to be entered in an
> older format to work. But more important, a parameter that asks
> system_profiler for USB-only info makes it run between 2x and 7x
> faster (roughly) depending on the state of the USB drive
> (mounted/unmounted/removed).
Thanks Phil! Good work. It's one thing to craft a useful handler, and
another to refine and optimize it.
That's a very helpful contribution to the community.
--
Richard Gaskin Managing Editor, revJournal
_______________________________________________________
Rev tips, tutorials and more: http://www.revJournal.com
So here's the updated function, ready for action on PowerPC or Intel Mac:
function u3SerialNumbers
# Return the serial numbers of all U3 drives currently known to the OS.
switch the platform
case "Win32"
return $U3_DEVICE_SERIAL
break
case "MacOS"
set the itemDelimiter to "."
if the systemVersion < 10 then return empty -- system is not OS X
-- prep
put 0 into x
put empty into tSerialNumberList
put shell("system_profiler SPUSBDataType") into tProfile
-- get U3 serial numbers
repeat
put lineOffset("U3 smart drive:",tProfile) into xStart
if xStart = 0 then exit repeat -- no U3 drive was found
put lineOffset("Serial Number:",tProfile,xStart) + xStart into xSerNum
put last word of line xSerNum of tProfile & cr after tSerialNumberList
delete line 1 to xSerNum of tProfile
end repeat
delete last char of tSerialNumberList
return tSerialNumberList
break
default
return empty
break
end switch
end u3SerialNumbers
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