Functions/Invoke-Highlight.ps1
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function Invoke-Highlight { <# .SYNOPSIS Highlight patterns in string(s). .DESCRIPTION This function will let you define a regular expression pattern and highlight matches in a string or string array. .EXAMPLE Get-Content .\file.txt | Invoke-Highlight error Will output the contents of .\file.txt and highlight all occurences of 'error' .NOTES Author: Øyvind Kallstad Date: 02.09.2016 Version: 1.0 #> [CmdletBinding()] param ( [Parameter(ValueFromPipeline = $true)] [string[]]$InputObject, # Specifies the text you want to highlight, as a regular expression. [Parameter(Position = 0)] [string] $Pattern, # Makes matches case-sensitive. By default, matches are not case-sensitive. [Parameter()] [switch] $CaseSensitive ) PROCESS { foreach ($item in $InputObject) { # Get matches $match = $item | Select-String -Pattern $Pattern -AllMatches -CaseSensitive:$CaseSensitive # Set initial index $index = 0 # Loop through matches foreach ($matchItem in ($match.Matches | Sort-Object -Property Index)) { # Before match $thisLength = $matchItem.Index - $index Write-Host $item.SubString($index,$thisLength) -NoNewline # Match Write-Host $item.SubString($matchItem.Index,$matchItem.Length) -ForegroundColor Red -NoNewline # Calculate new index $index = $matchItem.Index + $matchItem.Length } # Write the rest of the line $thisLength = $item.ToCharArray().Length - $index Write-Host $item.SubString($index,$thisLength) } } } New-Alias -Name 'highlight' -Value 'Invoke-Highlight' -force |