Re: File exists on a posix path
Re: File exists on a posix path
- Subject: Re: File exists on a posix path
- From: Gnarlodious <email@hidden>
- Date: Mon, 13 Feb 2006 07:33:49 -0700
- Thread-topic: File exists on a posix path
Title: Re: File exists on a posix path
Thank you for showing me how the “test command works, this is what Chris Nebel was suggesting. If you already know you have a POSIX path you can cut it down to the first test. Not a pretty solution, but I prefer this so I can see how the command executes in Terminal:
set cmd to "if test -e '" & filePath & "' ; then echo 1 ; else echo 0 ; fi"
((do shell script cmd) as integer) as boolean
Unfortunately, the “test” command doesn’t recognize the “~” shortcut, it demands the full absolute path to the file.
Does anyone know what “test” returns? Or must it be wrapped in a shell “if” block to get any output at all?
-- Gnarlie
Entity Bastiaan Boertien spoke thus:
maybe this ?
on checkIfFileExists(thefile)
if character 1 of thefile = "/" then
return (((do shell script ("if test -e '" & thefile & "' ; then echo 1 ; else echo 0 ; fi" as string)) as integer) as boolean)
else
return (((do shell script ("if test -e '" & POSIX path of thefile & "' ; then echo 1 ; else echo 0 ; fi" as string)) as integer) as boolean)
end if
end checkIfFileExists
The input needs to be a full path of the file. It can be an macintish path or an posix path
Op 10-feb-2006, om 23:37 heeft Christopher Nebel het volgende geschreven:
On Feb 10, 2006, at 11:45 AM, Gnarlodious wrote:
I think what you mean is this:
do shell script "ls ~/testfile"
Unfortunately if testfile does not exists then Applescript errors. I believe
this situation started in 10.4, because before then it returned a nul
string. But regardless, you now need to wrap it in a try statement:
try
do shell script "ls ~/testfile"
on error
return ""
end try
or some such gyration. I wish Apple would fix it, but it won't happen since
I didn't complain about it.
Not to mention the fact that ls's exit status is defined by POSIX. Take it up with them if you like, but I don't expect you'll get very far. Incidentally, it would be better to ask the question you actually wanted to ask, rather than relying on a side effect. In this case, assuming you're committed to using the shell, that would be to use test(1).
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