PowerShell Regex Matching content after a number of forward slashes and before the last one-CodePudding

Using PowerShell I am trying to use Regex on the example string to capture everything starting at the third "/" and stop before the last "/". Do you know the best Regex example to do this?

Example Test String: (structure is the same but text could be random)

/example/text/istyped/HERE.TXT
/example/text/canbetyped/HERE.TXT
/example/text/sometimestyped/HERE.TXT

CODE EXAMPLE

$Example = '/example/text/typed/HERE.TXT    # This $Example is imported from CSV
/example/text/istyped/HERE.TXT
/example/text/canbetyped/HERE.TXT
/example/text/sometimestyped/HERE.TXT'

$Output = $Example | where { $_.ExampleHeader -match '(My Pattern Here' }
$Output

My Output should simply be:

/typed
/istyped
/canbetyped
/sometimestyped

CodePudding user response：

If you have a recurring character in your input string you want split it on you can use the -split operator and pick the desired element with the index of the resulting array:

$Example = @'
/example/text/typed/HERE.TXT
/example/text/istyped/HERE.TXT
/example/text/canbetyped/HERE.TXT
/example/text/sometimestyped/HERE.TXT
'@ -split "`n"

foreach($element in $Example){
    ($element -split '/')[3]
}

The Output would look like this:

typed
istyped
canbetyped
sometimestyped

Of course you can add a slash in front of every element if you really need. ;-)

CodePudding user response：

I suggest you to construct your regex pattern by searching with the end of the string.

Something like that should do the job :

. (\/[^\/] )\/. $

this way, you capture the last group between to slashes. It is certainly perfectible :)

You can test it here : https://regex101.com/r/Ne5IVQ/1