Powershell - How to display next $line in a foreach loop - powershell

Question

I am currently parsing strings from .cpp files and need a way to display string blocks of multiple lines using the _T syntax. To exclude one line _T strings, I included a -notmatch ";" parameter to exclude them. This also excludes the last line of the string block, which I need. So I need to display the next string, so that the last string block with ";" is included.
I tried $foreach.moveNext() | out-file C:/T_Strings.txt -append but no luck.
Any help would be greatly appreciated. :)
foreach ($line in $allLines)
{
$lineNumber++
if ($line -match "^([0-9\s\._\)\(]+$_=<>%#);" -or $line -like "*#*" -or $line -like "*\\*" -or $line -like "*//*" -or $line -like "*.dll* *.exe*")
{
continue
}
if ($line -notlike "*;*" -and $line -match "_T\(\""" ) # Multiple line strings
{
$line | out-file C:/T_Strings.txt -append
$foreach.moveNext() | out-file C:/T_Strings.txt -append
}

Answer 1

In your sample, $foreach isn't a variable, so you can't call a method on it. If you want an iterator, you'll need to create one:
$iter = $allLines.GetEnumerator()
do
{
$iter.MoveNext()
$line = $iter.Current
if( -not $line )
{
break
}
} while( $line )
I would recommend you don't use regular expressions, though. Parse the C++ files instead. Here's the simplest thing I could think of to parse out all _T strings. It doesn't handle:
commented out _T strings
a ") in the _T string
a _T string at the end of a file.
You'll have to add those checks yourself. If you only want multi-line _T strings, you'll have to filter out single line strings, too.
$inString = $false
$strings = #()
$currentString = $null
$file = $allLines -join "`n"
$chars = $file.ToCharArray()
for( $idx = 0; $idx < $chars.Length; ++$idx )
{
$currChar = $chars[$idx]
$nextChar = $chars[$idx + 1]
$thirdChar = $chars[$idx + 2]
$fourthChar = $chars[$idx + 3]
# See if the current character is the start of a new _T token
if( -not $inString -and $currChar -eq '_' -and $nextChar -eq 'T' -and $thirdChar -eq '(' -and $fourthChar -eq '"' )
{
$idx += 3
$inString = $true
continue
}
if( $inString )
{
if( $currChar -eq '"' -and $nextChar -eq ')' )
{
$inString = $false
if( $currentString )
{
$strings += $currentString
}
$currentString = $null
}
else
{
$currentString += $currChar
}
}
}

Answer 2

Figured out the syntax to do this:
$foreach.movenext()
$foreach.current | out-file C:/T_Strings.txt -append
You need to move to the next, then pipe the current foreach value.