Re: "exists" not working
Re: "exists" not working
- Subject: Re: "exists" not working
- From: "Tracy Vanderwerf" <email@hidden>
- Date: Wed, 03 Apr 2002 12:11:25 -0500
- Organization: White Directory Publishers
Thank you to Paul Berkowitz and Deivy Petrescu for their responses.
Paul, thank you for the explanations (which helped me to understand my problem)
and suggestions. Yes, I am running AS 1.4.3.
I will consider the upgrade.
This is what I ended up doing:
if (ADTYPE = "COU" or ADTYPE = "MIS" or ADTYPE = "WTM") then
set my_expandpath to (filepath & ".sit")
display dialog "my_expandpath = " & my_expandpath
try
my_expandpath as alias
on error
set stuffed_file to false
end try
end if
Paul Berkowitz wrote:
>
On 4/3/02 8:00 AM, "Tracy Vanderwerf" <email@hidden>
>
wrote:
>
>
> I have had no success in ever getting a question of mine answered on
>
> this list, but will try again. Perhaps my questions are too elementary,
>
> but I really am at a loss here and still a novice. Is there a "newbie"
>
> list ?
>
> I am running AS 9.0.4.
>
>
You must mean OS 9.0.4, which has AS 1.4.3 installed unless you've upgraded
>
the AppleScript extension separately.
>
>
(You should upgrade to OS 9.1 or, better, 9.2.1 - with AS 1.6 but _not_ to
>
OS 9.2.2. (AS 1.7 there has lots of bugs) unless you also want to upgrade AS
>
to the developer beta 1.8.2b3 which is very good.)
>
>
> The code in question works outside of the main script and in Script
>
> Debugger, but not within the script itself, which has a run handler with
>
> parameters. The script just stops after the display dialog. The file
>
> does exist and my variable is set to true if I run this outside of the
>
> main script. What am I doing wrong?
>
>
Have you tried it in the 'main script' not using parameters but just setting
>
the values to see if the problem is with the parameter list technique or
>
with something else?
>
>
Assuming you have a proper string filepath, what do you expect to happen
>
next? in the snippet below, you are simply setting a variable, stuffed_file,
>
to true or false. what's supposed to happen with this value?
>
>
OK: this is what I think is happening. The Finder doesn't really like
>
'alias' although it can usually cope. It likes 'file'. But if there there
>
is indeed no such file, then 'alias my_expandpath' cannot resolve: it
>
errors, in a normal context (outside a Finder tell block), and the script
>
can't proceed. You get an error message and that's the end of your script.
>
However, in a Finder tell block, instead of sending up an error message "The
>
file [whatever it is] cannot be found", it will just quietly do nothing.
>
It's one of those things the Finder accommodates to be "kind". That's
>
probably what's happening here.
>
>
I would suggest avoiding the Finder, and its 'exists' property, altogether.
>
>
set my_expandpath to (filepath & ".sit")
>
try
>
get alias my_expandpath
>
set stuffed_file to true
>
on error
>
set stuffed_file to false
>
end if
>
>
>
> on run{parameter list}
>
> process_it(parameters)
>
>
>
> other stuff
>
> end run
>
>
>
> on process_it(parameters)
>
>
>
> set some variables
>
>
>
> if (ADTYPE = "COU" or ADTYPE = "MIS" or ADTYPE = "WTM") then
>
> set my_expandpath to (filepath & ".sit")
>
> display dialog "my_expandpath = " & my_expandpath
>
> tell application "Finder"
>
> set stuffed_file to (exists (alias my_expandpath))
>
> end tell
>
> end if
>
>
>
>
>
> end process_it
>
>
>
>
--
>
Paul Berkowitz
[demime 0.98b removed an attachment of type text/x-vcard which had a name of tvanderwerf.vcf]
_______________________________________________
applescript-users mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/applescript-users
Do not post admin requests to the list. They will be ignored.