• Open Menu Close Menu
  • Apple
  • Shopping Bag
  • Apple
  • Mac
  • iPad
  • iPhone
  • Watch
  • TV
  • Music
  • Support
  • Search apple.com
  • Shopping Bag

Lists

Open Menu Close Menu
  • Terms and Conditions
  • Lists hosted on this site
  • Email the Postmaster
  • Tips for posting to public mailing lists
Re: Various Qs about Intel and AppleScript
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Various Qs about Intel and AppleScript


  • Subject: Re: Various Qs about Intel and AppleScript
  • From: Christopher Nebel <email@hidden>
  • Date: Mon, 6 Feb 2006 11:35:22 -0800

On Feb 4, 2006, at 8:06 AM, jj wrote:

At 2:15 PM +0100 1/11/06, jj wrote:
Will little-endian vs. big-endian affect AS code?

For example, if I compile an alias reference in a PowerPC machine, will it
fail in the Intel one?


Or should I write/read Unicode text being aware of endian differences?

This has little to see with the Intel machine. Anyway you may have on your machines low-endian as well as big-endian Unicode files, and most Unicode reader software understand both - except of course for UTF-8 without the BOM where the software usually guesses its own endian.

Yes, but for example, you can write "as list", where every member is a chunk
of Unicode text, and I don't think actually the structure includes a BOM (it
doesn't at all), so I was trying to ensure you can retrieve the exact info
both from Intel and PPC when you read the data again (and seem Chris ensures
a big-endian behaviour in both machines, at least till AppleScript is
re-newed ;-).

A BOM is merely one way to have endian-safe data. If all the producers and consumers of a data stream agree on a particular endianness, then you don't need any signaling tags like a BOM, and that's what we did.


Incidentally, the concept of endianness is meaningless for UTF-8, because UTF-8 is defined as a stream of 8-bit bytes. Endianness, at least as far as Intel and PowerPC are concerned, only applies to larger units, such as 16- and 32-bit words. Including a BOM in a UTF-8 file is handy in that it's a signal that the data is in fact UTF-8, but is otherwise unnecessary.


--Chris Nebel AppleScript and Automator Engineering

_______________________________________________
Do not post admin requests to the list. They will be ignored.
Applescript-users mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden


References: 
 >Re: Various Qs about Intel and AppleScript (From: jj <email@hidden>)

  • Prev by Date: Re: Determining the Default Mail App
  • Next by Date: Re: Determining the Default Mail App
  • Previous by thread: Re: Various Qs about Intel and AppleScript
  • Next by thread: Re: Various Qs about Intel and AppleScript
  • Index(es):
    • Date
    • Thread