Extracting part of a file name

Question

I have a file with the naming convention as such:
AR999 Smith, Bob EM v1.mov
I need to extract out the v1 part. Other files may have the same name but with a v2, v3,v4 etc on the end so I will need to know what version number we are on. How do I set up a variable that knows what the version number the file is. for example
set the_version to last text item of a_file
then the_version variable would equal, v1
something like that.
I know you have to use Applescript text item delimiters, I just cannot make it work.
thanks

Answer 1

If you know the format of the text string, there are several different ways to get the last couple of characters - text item delimiters, text range, word item, etc. The following example gets the last word of a file name:
<pre style="
font-family: Monaco, 'Courier New', Courier, monospace;
font-size: 10px;
margin: 0px;
padding: 5px;
border: 1px solid #000000;
width: 720px;
color: #000000;
background-color: #FFDDFF;
overflow: auto;"
title="this text can be pasted into the Script Editor">
set SomeItem to (choose file)
set {name:TheName, name extension:TheExtension} to (info for SomeItem)
if TheExtension is in {missing value, ""} then
set TheExtension to ""
else
set TheExtension to "." & TheExtension
end if
set TheName to text 1 thru -((length of TheExtension) + 1) of TheName -- just the name part
set TheVersion to the last word of TheName
display dialog TheVersion
</pre>