Public/Find-Key.ps1
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function Find-Key { <# .SYNOPSIS Check if a key exists in a hashtable .DESCRIPTION Check if a specified key exists in a hashtable with or without regards to the case. .PARAMETER Hashtable The hastable parameter corresponds to the hastable in which to look for the key. .PARAMETER Key The key parameter corresponds to the key to search for. .PARAMETER CaseSensitive The case sensitive switch defines is the search should be case sensitive. .OUTPUTS [System.Boolean] The function returns a boolean. .EXAMPLE Find-Key -Hashtable @{"key"="value"} -Key "KEY" In this example, the function returns true. .EXAMPLE Find-Key -Hashtable @{"key"="value"} -Key "KEY" -CaseSensitive In this example, the function returns false. .NOTES File name: Find-Key.ps1 Author: Florian Carrier Creation date: 08/12/2018 Last modified: 08/12/2018 #> [CmdletBinding ()] Param ( [Parameter ( Position = 1, Mandatory = $true, HelpMessage = "Hashtable" )] [ValidateNotNullOrEmpty ()] [System.Collections.Specialized.OrderedDictionary] $Hashtable, [Parameter ( Position = 2, Mandatory = $true, HelpMessage = "Key to search for" )] [ValidateNotNullOrEmpty ()] [String] $Key, [Parameter ( HelpMessage = "Define if match should be case sensitive" )] [Switch] $CaseSensitive ) Process { $Check = $false if ($Hashtable.$Key) { $Check = $true } elseif (-Not $CaseSensitive) { $UpperCaseKey = Format-String -String $Key -Format "UpperCase" if ($Hashtable.$UpperCaseKey) { $Check = $true } else { $FormattedKey = Format-String -String $Key -Format "lowercase" foreach ($Item in $Hashtable.Keys) { $FormattedItem = Format-String -String $Item -Format "lowercase" if ($FormattedItem -eq $FormattedKey) { $Check = $true } } } } return $Check } } |