Private/Get-HubIdentifier.ps1
|
# Copyright (c) Microsoft Corporation. # Licensed under the MIT License. <# .SYNOPSIS Gets the unique 13 character string that Azure deployments add to a resource from a list of strings. .PARAMETER Collection Collection of strings to evaluate. .EXAMPLE Get-HubIdentifier -Collection @('test-123456hyfpqje', 'test123456hyfpqje', '123456hyfpqjetest', 'test_hub_123456hyfpqje') Returns the string '123456hyfpqje'. #> function Get-HubIdentifier { param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [string[]] $Collection ) $substrings = @() foreach ($string in $Collection) { for ($startIndex = 0; $startIndex -lt $string.Length; $startIndex++) { for ($endIndex = 1; $endIndex -le ($string.Length - $startIndex); $endIndex++) { $substrings += $string.Substring($startIndex, $endIndex).ToLower() } } } $id = $substrings | Group-Object | Where-Object -FilterScript {$_.count -eq $Collection.length -and $_.Name.Length -eq 13} | Select-Object -Expand 'Name' if ($id -notcontains '-' -and $id -notcontains '_') { return $id } return $null } |