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REGEX for multiple lines - powershell

I have a little problem with regex in powershell. My REGEX only works for one line. I need to work on multiple lines.

For example html:

<li> test </li>
</ul>

I want REGEX to take everything including "/ ul>". My suggestion:

'(^.*<li>.*</ul>)'

But it doesn't work. Is it possible? Thank.

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2 answers


It depends on which regex method you are using.

If you are using .NET Regex::Match

there is a third parameter where you can define additional options regex

. Use [System.Text.RegularExpressions.RegexOptions]::Singleline

here:

$html = 
@'
<li> test </li>
</ul>
'@

$regex = '(^.*<li>.*\</ul>)' 

[regex]::Match($html,$regex,[System.Text.RegularExpressions.RegexOptions]::Singleline).Groups[0].Value


If you want to use the Select-String cmdlet , you need to specify the singleline option (?s)

in your regex

:

$html = 
@'
<li> test </li>
</ul>
'@

$regex = '(?s)(^.*<li>.*\</ul>)' 

$html | Select-String $regex -AllMatches | Select -Expand Matches | select -expand Value
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Using a multi-line one-line regex with -match

:



$string = @'
notmached
<li> test </li>
</ul>
notmatched
'@


$regex = @'
(?ms)(<li>.*</li>.*?
\s*</ul>)
'@

$string -match $regex > $null
$matches[1]

<li> test </li>
</ul>
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