CSV only contains last entry from file - regex

Question

The CSV file only contains a partial entry from the last regex match.
I've used the ISE debugger and can verify it's finding matches.
$h = #{}
$a = #()
Get-ChildItem C:\Users\speterson\Documents\script\*.kiy | foreach {
Get-Content $_ | foreach {
if ($_ -match 'IF Ingroup\s+\(\s+\"(..+?)\"\s+\)') {
$h.Group = $matches[1]
}
if ($_ -match 'use\s+([A-Za-z]):"(\\\\..*?\\..*)\"')) {
$h.DriveLetter = $matches[1].ToUpper()
$h.Path = $matches[2]
}
}
$a += New-Object PSCustomObject -Property $h
}
$a | Export-Csv c:\temp\Whatever.csv -NoTypeInfo
The input files look like this, but have 1000+ lines in them:
IF Ingroup ( "RPC3WIA01NT" )
use v: /del
ENDIF
IF Ingroup ( "JWA03KRONOSGLOBAL" )
use v:"\\$homesrvr\$dept"
ENDIF
IF Ingroup ( "P-USERS" )
use p:'\\PServer\PDRIVE
ENDIF
CSV file only shows:
GROUP
P-USERS
I want to ignore the drive letters with the /del.
I'm trying to get a CSV file that shows
Group Drive Path
JWA03KRONOSGLOBAL V \\$homesrvr\$dept
P-USERS P \\PServer\PDRIVE

Answer 1

Your code has two loops, one nested in the other. The outer loop processes each file from the Get-ChildItem call. The inner loop processes the content of the current file of the outer loop. However, since you're creating your objects after the inner loop finished you're only getting the last result from each processed file. Move object creation into the inner loop to get all results from all files.
I'd also recommend not re-using a hashtable. Re-using objects always bears the risk of having data carried over somewhere undesired. Hashtable creation is so inexpensive that running that risk is never worth it.
On top of that your processing of the files' content is flawed, because the inner loop processes the content one line at a time, but both of your conditionals match on different lines and are not linked to each other. If you created a new object with every iteration that would give you incorrect results. Read the file as a whole and then use Select-String with a multiline regex to extract the desired information.
Another thing to avoid is appending to an array in a loop (that's a slow operation because it involves re-creating the array and copying elements over and over). Since you're using ForEach-Object you can pipe directly into Export-Csv.
Something like this should work:
$re = 'IF Ingroup\s+\(\s+"(.+?)"\s+\)\s+' +
"use\s+([a-z]):\s*[`"'](\\\\[^`"'\s]+)"
Get-ChildItem 'C:\Users\speterson\Documents\script\*.kiy' | ForEach-Object {
Get-Content $_.FullName |
Out-String |
Select-String $re -AllMatches |
Select-Object -Expand Matches |
ForEach-Object {
New-Object -Type PSObject -Property #{
'Group' = $_.Groups[1].Value
'DriveLetter' = $_.Groups[2].Value
'Path' = $_.Groups[3].Value
}
}
} | Export-Csv 'C:\path\to\output.csv' -NoType