Private/Get-HubIdentifier.ps1
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# 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 ) $idPattern = '[a-z0-9]{13}' # Matches exactly 13 alphanumeric characters $substrings = @() foreach ($string in $Collection) { # Use regex to find valid 13-character matches $match = [regex]::Matches($string, $idPattern) if ($match.Count -gt 0) { $substrings += $match | ForEach-Object { $_.Value } } # Generate all possible substrings for ($startIndex = 0; $startIndex -lt $string.Length; $startIndex++) { for ($endIndex = 1; $endIndex -le ($string.Length - $startIndex); $endIndex++) { $substrings += $string.Substring($startIndex, $endIndex).ToLower() } } } # Filter out matches that have hyphens or underscores and return the first valid match $validMatches = $substrings | Group-Object | Where-Object { $_.Count -eq $Collection.Length -and $_.Name.Length -eq 13 -and $_.Name -notmatch '[-_]' } | Select-Object -ExpandProperty Name return $validMatches | Select-Object -First 1 } |