Find-InFiles.psm1

function Find-InFiles {
<#
.SYNOPSIS
    Find in files.
.DESCRIPTION
    Finds a string within files of a specific type within the given locations and/or files with names containing that string.
.PARAMETER Needle
    <string to find>
.PARAMETER Haystacks
    <paths to check>
.PARAMETER FileTypes
    <types of files to search through>
.PARAMETER MaxAge
    <maximum age in days>
.EXAMPLE
    Find-InFiles 'waldo'
.EXAMPLE
    Find-InFiles -Haystacks $($env:PSModulePath + ',' -replace(';', ',') -replace(',', '\%,') -replace('\\\\%', '\%') | Sort-Object -Unique) -FileTypes '*.ps1,*.psm1' -Needle 'waldo' -NameMatch
.EXAMPLE
    Find-InFiles -Haystacks "$($env:UserProfile)\Source\%" -FileTypes '*.ps1,*.psm1,*.cmd,*.bat,*.sql' -Needle 'waldo'
.NOTES
    01/17/2017 lordbeazley Initial release.
    02/24/2017 lordbeazley Added recursion per haystack (append % to haystack to recurse).
    03/25/2017 lordbeazley Added NameMatch.
    08/14/2018 lordbeazley Added MaxAge.
    09/09/2018 lordbeazley Converted to function/module.
#>

[CmdletBinding(SupportsShouldProcess = $false, PositionalBinding = $false, ConfirmImpact = 'Low')]
Param(
    [Parameter(Mandatory = $true, ValueFromPipeLine = $true, ValueFromPipeLineByPropertyName = $true, Position = 0)]
        [string]$Needle,
    [Parameter(Mandatory = $false, Position = 1)]
        [string]$Haystacks = ".\%",
    [Parameter(Mandatory = $false, Position = 2)]
        [string]$FileTypes = '*.bat,*.cmd,*.ps1,*.psm1,*.sql',
    [Parameter(Mandatory = $false, Position = 3)]
        [switch]$NameMatch,
    [Parameter(Mandatory = $false, Position = 4)]
        [int]$MaxAge = 0
)

$HeapArray = @()

foreach ($Haystack in ($Haystacks -split ',')) {
    ($Haystack, $Recurse) = $Haystack -split '%'
    if ($Recurse -eq '') {
        Write-Host ("`r`nLOOKING FOR '{0}' IN: {1} (RECURSIVE) {2}" -f $Needle, $Haystack, $FileTypes) -ForegroundColor 'White'
        foreach ($FileType in ($FileTypes -split ',')) {
            Get-ChildItem -Path $Haystack -Filter $FileType -Recurse -File |
                ForEach-Object {
                    if (Get-Content -Path $_.FullName | Select-String -Pattern $Needle) {
                        Write-Host "+ "  -ForegroundColor 'Green' -NoNewLine
                        Write-Host ("{0,22} " -f $_.LastWriteTime) -ForegroundColor 'Green' -NoNewLine
                        Write-Host $_.FullName -ForegroundColor 'Green'
                        $HeapArray += "($($_.LastWriteTime)) $($_.FullName)"
                    } elseif ($NameMatch -and $_.FullName -imatch $Needle) {
                        Write-Host "+ "  -ForegroundColor 'Yellow' -NoNewLine
                        Write-Host ("{0,22} " -f $_.LastWriteTime) -ForegroundColor 'Yellow' -NoNewLine
                        Write-Host $_.FullName -ForegroundColor 'Yellow'
                        $HeapArray += "($($_.LastWriteTime)) $($_.FullName)"
                    } else {
                        Write-Host "+ "  -ForegroundColor 'Gray' -NoNewLine
                        Write-Host ("{0,22} " -f $_.LastWriteTime) -ForegroundColor 'DarkGray' -NoNewLine
                        Write-Host $_.FullName -ForegroundColor 'Gray'
                    }
                }
        }
    } else {
        Write-Host ("`r`nLOOKING FOR '{0}' IN: {1} {2}" -f $Needle, $Haystack, $FileTypes) -ForegroundColor 'White'
        foreach ($FileType in ($FileTypes -split ',')) {
            Get-ChildItem -Path $Haystack -Filter $FileType -File |
                ForEach-Object {
                    if (Get-Content -Path $_.FullName | Select-String -Pattern $Needle) {
                        Write-Host "+ "  -ForegroundColor 'Green' -NoNewLine
                        Write-Host ("{0,22} " -f $_.LastWriteTime) -ForegroundColor 'DarkGray' -NoNewLine
                        Write-Host $_.FullName -ForegroundColor 'Green'
                        $HeapArray += "($($_.LastWriteTime)) $($_.FullName)"
                    } elseif ($NameMatch -and $_.FullName -imatch $Needle) {
                        Write-Host "+ "  -ForegroundColor 'Yellow' -NoNewLine
                        Write-Host ("{0,22} " -f $_.LastWriteTime) -ForegroundColor 'DarkGray' -NoNewLine
                        Write-Host $_.FullName -ForegroundColor 'Yellow'
                        $HeapArray += "($($_.LastWriteTime)) $($_.FullName)"
                    } else {
                        Write-Host "+ "  -ForegroundColor 'Gray' -NoNewLine
                        Write-Host ("{0,22} " -f $_.LastWriteTime) -ForegroundColor 'DarkGray' -NoNewLine
                        Write-Host $_.FullName -ForegroundColor 'Gray'
                    }
                }
        }
    }
}

if ($NameMatch -eq $true) {
    Write-Host ("`r`n{0} files containing or named like '{1}':`r`n" -f $HeapArray.Count, $Needle) -ForegroundColor 'White'
} else {
    Write-Host ("`r`n{0} files containing '{1}':`r`n" -f $HeapArray.Count, $Needle) -ForegroundColor 'White'
}

$HeapArray | clip
Write-Output $HeapArray
}

Set-Alias -Name 'fifi' -Value 'Find-InFiles'