Re^3: How to validate windows path

Define 'valid'. One approach would be to 'try it and see'. Attempt the create, if that succeeds, check to verify the directory exists¹. In this case, 'valid' means being able to be created.

If you define what you mean by 'valid', it may help with the responses.

Footnotes:

1 - Winding back if it doesn't exist might be fun...

Updates:

+10 minutes - Update formatting and footnotes, and added a more generic response.

--MidLifeXis

Comment on Re^3: How to validate windows path

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Re^4: How to validate windows path by nemesdani (Friar) on Mar 13, 2012 at 12:27 UTC
I misunderstood the OP's question. In this case, I agree with MidLifeXis, try create a dir. A tool you can use can be Win32::CreateDirectory, check the return value and message the user afterward	[reply]
Re^4: How to validate windows path by roteme (Acolyte) on Mar 13, 2012 at 16:59 UTC
I didn't successes to use the following regular expressions `my $dir = "c:\\temp\\%1111 323232?"; if ($dir =~ m/^[a-z]:\$?:[^\\/:?"<>\|\r\n]+\$[^\\/:?"<>\|\r\n]$/i) { print "Valid Path\n"; } else { print "Not Valid Path\n"; }` [download] Please advise - as i wrote i get Path from the user and i need to print error if isn't valid path.	[reply] [d/l]
Re^5: How to validate windows path by tobyink (Canon) on Mar 13, 2012 at 21:28 UTC
A regular expression to check whether a path is valid or not would be quite a substantial piece of work. For example... `C:\BON - a valid path C:\CON - not valid` [download] (Aside: "CON" is a special device representing the console itself, so files and directories are not allowed to be called "CON". There are other devices with similar effect. Unixey operating systems have a similar feature, however absolute paths were always used, so while you cannot name a file "/dev/stdin" in Unix, you can create "stdin" files in other directories.) Do what everyone else has said - just go ahead and try to create the directory, then check that it exists (i.e. that creation worked). `perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'`	[reply] [d/l]
Re^5: How to validate windows path by MidLifeXis (Monsignor) on Mar 13, 2012 at 18:40 UTC
What did you get when you ran it? I received an error message that points out very well where I (well, the code) has an error in it. `Unmatched [ in regex; marked by <-- HERE in m/^[a-z]:\\(?:[ <-- HERE ^\\/ at foo.pl line 3.` You need to escape the 'end of regexp' marker to move beyond this. --MidLifeXis	[reply] [d/l]