helper/Validate-Object.ps1
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# For validation of a given object, against its expected prototype function Validate-Object { [CmdletBinding(DefaultParameterSetName='Default')] param ( [Parameter(Mandatory=$true, ParameterSetName='Pipeline', Position=0)] [Parameter(Mandatory=$true, ParameterSetName='Default')] [object]$Prototype , [Parameter(Mandatory=$true, ValueFromPipeline, ParameterSetName='Pipeline')] [Parameter(Mandatory=$true, ParameterSetName='Default')] [AllowNull()] [AllowEmptyString()] [AllowEmptyCollection()] [object]$TargetObject , [Parameter(Mandatory=$true, ParameterSetName='Pipeline')] [Parameter(Mandatory=$false, ParameterSetName='Default')] [switch]$Mandatory ) process { try { if ($null -ne $TargetObject) { "Validating TargetObject '$Targetobject' of type '$( $Targetobject.GetType().Name )' and basetype '$( $Targetobject.GetType().BaseType )'`tagainst Prototype '$Prototype' of type '$( $Prototype.GetType().Name )' and basetype '$( $Prototype.GetType().BaseType )'" | Write-Verbose if ( $Prototype.GetType().FullName -ne $TargetObject.GetType().FullName ) { throw "Type $( $TargetObject.GetType().FullName ) is invalid! It should be of type '$( $Prototype.GetType().FullName )'" } } if ( $Prototype -is [string] ) { # Nothing }elseif ( $Prototype -is [array] -or $Prototype -is [System.Collections.ArrayList] ) { if ( $Prototype.Count -eq 0 -or $Prototype.Count -gt 1 ) { throw "Invalid prototype! I must contain only one value. Prototype: `n$Prototype" } $_prototype = $Prototype[0] foreach ( $_targetObject in $TargetObject ) { "`tValidating TargetObject '$_targetObject' of type '$( $_targetObject.GetType().Name )' and basetype '$( $_targetObject.GetType().BaseType )'`t`tagainst Prototype '$_prototype' of type '$( $_prototype.GetType().Name )' and basetype '$( $_prototype.GetType().BaseType )'" | Write-Verbose if ($_prototype.GetType().FullName -ne $_targetObject.GetType().FullName) { throw "Type $( $_targetObject.GetType().FullName ) is invalid! It should be of type '$( $_prototype.GetType().FullName )'" } if ( $_prototype -is [psobject] -or $_prototype.GetType().FullName -match '^System\.Collections\.Hashtable$|^System\.Collections\.Specialized\.OrderedDictionary$' ) { Validate-Object -Prototype $_prototype -TargetObject $_targetObject -Mandatory:$Mandatory } } }else { if ( $Prototype -is [bool] ) { if (!$Mandatory) { if ($null -eq $TargetObject) { return } } # Ensure we got all properties if ($null -eq $TargetObject) { throw "Value cannot be null" } if ( $TargetObject -isnot [bool] ) { throw "Value should be of type [bool]" } return }elseif ( $Prototype -is [int] ) { if (!$Mandatory) { if ($null -eq $TargetObject) { return } } # Ensure we got all properties if ($null -eq $TargetObject) { throw "Value cannot be null" } if ( $TargetObject -isnot [int] ) { throw "Value should be of type [int]" } return } elseif ( $Prototype -is [psobject] -or $Prototype -is [pscustomobject] ) { foreach ($property in $Prototype.psobject.properties.name) { $_prototype = $Prototype.$property if ($Mandatory -and $TargetObject.psobject.properties.match($property).Count -eq 0) { throw "Key '$property' is missing" } $_targetObject = $TargetObject.$property if (!$Mandatory) { if ($null -eq $TargetObject.$property) { return } } Validate-Object -Prototype $_prototype -TargetObject $_targetObject -Mandatory:$Mandatory } }elseif ( $Prototype.GetType().FullName -match '^System\.Collections\.Hashtable$|^System\.Collections\.Specialized\.OrderedDictionary$') { $Prototype.GetEnumerator() | % { $Key = $_.Name $_prototype = $Prototype[$Key] if ($Mandatory -and ! $TargetObject.Contains($key)) { # Ensure we got all properties throw "Key '$Key' is missing" } $_targetObject = $TargetObject[$Key] if (!$Mandatory) { if ($null -eq $_targetObject) { return } } Validate-Object -Prototype $_prototype -TargetObject $_targetObject -Mandatory:$Mandatory } }else { throw "Type $( $Prototype.Gettype().FullName ) is invalid. It must be one of the following: bool, string, array, hashtable, psobject" } } }catch { Write-Error -ErrorRecord $_ } } } |