Get file info problem

Scripting Forums AppleScript | Mac OS X
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#1

i’m trying to use this:

set the destination_file to ((path to desktop) & “picture.jpg”) as text
set theFileSize to size of (info for destination_file)

but I always get error “file not found”
I know I must use something else then “as text” ??

it is indeed on my desktop cause it works with “set destination_file to choose file” instead.

#2

The info for command expects an alias:


set the destination_file to ((path to desktop) & "picture.jpg") as text
set theFileSize to size of (info for (destination_file as alias))
#3

Thanks, it works !

I have a follow up question…

le’ts say I want to repeat until file is halway done…


repeat until (theFileSize) is greater than or equal to xxxx
end repeat

this is part of a downloader
let’s say my file is 1000 byte, when I download it will start out as 0 byte. I want to repeat until the file has grown to 500 byte (the xxxx)

what should I replace the xxxx with to accomplish this?

#4

I would do something like this:


set the destfile to ((path to desktop) & "AS.rtf") as text

repeat
	set destfilesize to size of (info for (destfile as alias))
	if destfilesize > 500 then
		exit repeat
	end if
	delay 3
end repeat

display dialog "File size already > 500 bytes!"

But there is the danger that the file size does not increase (e.g. aborted download), so you should implement a rescue exit (like “repeat 25 times”).

#5

Just to note that ‘info for’ is deprecated (as from Leopard, I think) and will probably stop working at some point in the future. The StandardAdditions dictionary recommends using System Events’s ‘properties of’ facility instead. Since ‘info for’ and other deprecated StandardAdditions commands are much faster than the official alternatives, I’m personally using ‘try’ blocks that will only employ the alternatives when the originals cease to work. :wink:

try
	-- Deprecated StandardAdditions command.
on error
	-- Official alternative.
end try
#6

yay I did it!

for anyone it may help, here is working File Download Script with output that can connect to progress bar (here using dialogs)


				do shell script "/usr/bin/curl " & "urladress" & " -o " & quoted form of (POSIX path of destination_file) & " -m 9000 > /dev/null 2>&1 & echo $!"

				set newSize to 0
				delay 2
				do shell script "curl " & fileURL & " -I | grep " & "Content-Length: " & " | grep -v grep"
				set returnResult to the result as text
				set theFileSize to word 3 of returnResult as number
				
				
				repeat while newSize is not equal to theFileSize
					delay 3
					set newSize to size of (info for (destination_file as alias))
					if newSize < (theFileSize / 3) then
						display dialog "Less then 30% completed"
					else if newSize < (theFileSize / 1.5) then
						display dialog "Less then 60% completed"
					else
						display dialog "Less then 100% completed"
					end if
				end repeat
				
				
				display dialog "success"

how would I go about to use System Events instead?

#7

:slight_smile:

tell application "System Events" to set newSize to size of (get properties of (destination_file as alias))