check a path

[Jojo l'asticot]

Hello,

I would like to check if the last element of my path is a .dat or a .txt file.

suggest?

thank you

L'asticot

[pincpanter]

Here is one possibility: convert to a string, then use the attached vi. Similar for .dat.

[Ray.R]

Here's an alternative method:

Message Edited by JoeLabView on 06-01-2007 09:24 AM

[PJS]

In the file I/O-> advanced file functions palette is a VI called get file extension.

[Ray.R]

Thanks Paul..

This is a new vi since LV8.x.

I was doing it in LV7.1.

It's good to know the new tricks.. 🙂

[Rod42]

Unfortunately JoeLabView's version will find the extension anywhere within the filename, so for instance "c:\path\txtcheck.vi"  will show as a .txt file [The comparison is for an pattern and "." will match ANY character]

This selection should all work; including one that will look for either .dat or .txt in one test. Add error in/out as appropriate.

Message Edited by Rod on 06-01-2007 03:13 PM

[Rod42]

Sorry, Joe's test won't match c:\path\txtcheck.vi, but will match c:\path\atxtcheck.vi

Rod.

[Rod42]

.....or if you want to do something differently depending on the result, you could get the extension, and use the result as a case selector, either "txt", "dat", or Default.

Rod.

Message Edited by Rod on 06-01-2007 03:37 PM

[PJS]

previous to LabVIEW 8

1. convert path to string
2. reverse the string
3. match pattern [.]+
4. take the before match output
5. reverse that string
6. evaluate the file type
   

[Ray.R]

Very nice Paul!