I have a little problem with regex in powershell. My REGEX works only for one line. I need to work on multiple lines.
For example html:
<li> test </li>
</ul>
I want REGEX took everything, including "/ul>". My suggestion is:
'(^.*<li>.*</ul>)'
But it donesn't work. Is it even possible? Thanks.
It depends on what regex method you are using.
If you use the .NET Regex::Match, there is a third parameter where you can define additional regexoptions. 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 have to specifiy the singleline option (?s) within your regex:
$html =
@'
<li> test </li>
</ul>
'@
$regex = '(?s)(^.*<li>.*\</ul>)'
$html | Select-String $regex -AllMatches | Select -Expand Matches | select -expand Value
Using a multi-line single-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>
