Big warning to all AppleScript users

Scripting Forums AppleScript | Mac OS X
#21

Here is an Vanilla AppleScript version

use AppleScript version "2.4" -- Yosemite (10.10) or later
use scripting additions

set thePath to (path to desktop)

if isFile(thePath) then
	log "do something with my file"
end if

on isFile(thePath) -- accepts thePath as text or as alias
	local tid, flag
	set tid to text item delimiters
	set text item delimiters to ":"
	if class of thePath is alias then set thePath to thePath as text
	if last text item of thePath is "" then -- its a folder
		set flag to false
	else
		set flag to true
	end if
	set text item delimiters to tid
	return flag
end isFile

and an even simpler one below

-- works with HFS paths, change the ":" to "/" for posix paths
on isFile(thePath)
	if class of thePath is alias then set thePath to thePath as text
	if text -1 of thePath is ":" then -- its a folder
		return false
	else
		return true
	end if
end isFile
#22

May I suggest to use this method instead:

+ (NSURL *)fileURLWithPath:(NSString *)path isDirectory:(BOOL)isDir;

It will check if the object at the target path is actually a directory or not. hasDirectoryPath will only check the path string without checking the actual item at this path.

#23

Thanks @robertfern @zevrix
Here is other with Finder.

set thePath to choose folder
log isClass(thePath)

set thePath to choose file --> if we choose a file it will return document file
log isClass(thePath)

set thePath to (path to desktop as text) & "somefile.txt"
log isClass(thePath)

set thePath to (path to desktop)
log isClass(thePath)

set thePath to POSIX path of (path to desktop) & "somefile.txt"
log isClass(thePath)

set thePath to POSIX path of (path to desktop)
log isClass(thePath)

on isClass(thePath)
	tell application "Finder"
		if thePath's class is text and (last character of thePath) is ":" then
			return folder
		else if thePath's class is text and (last character of thePath) is "/" then
			return folder
		end if
		if thePath's class is alias then
			set theProperties to thePath's properties
			return theProperties's class
		end if
	end tell
	return file
end isClass
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