Source/Public/Sort-ObjectGraph.ps1
|
<#
.SYNOPSIS Sort object graph .DESCRIPTION Recursively sorts a object graph. .PARAMETER InputObject The input object that will be recursively sorted. > [!NOTE] > Multiple input object might be provided via the pipeline. > The common PowerShell behavior is to unroll any array (aka list) provided by the pipeline. > To avoid a list of (root) objects to unroll, use the **comma operator**: ,$InputObject | Sort-Object. .PARAMETER PrimaryKey Any primary key defined by the [-PrimaryKey] parameter will be put on top of [-InputObject] independent of the (descending) sort order. It is allowed to supply multiple primary keys. .PARAMETER MatchCase Indicates that the sort is case-sensitive. By default, sorts aren't case-sensitive. .PARAMETER Descending Indicates that Sort-Object sorts the objects in descending order. The default is ascending order. > [!NOTE] > Primary keys (see: [-PrimaryKey]) will always put on top. .PARAMETER MaxDepth The maximal depth to recursively compare each embedded property (default: 10). #> function Sort-ObjectGraph { [Diagnostics.CodeAnalysis.SuppressMessage('PSUseApprovedVerbs', '')] [CmdletBinding()][OutputType([Object[]])] param( [Parameter(Mandatory=$true, ValueFromPipeLine = $True)] $InputObject, [Alias('By')][String[]]$PrimaryKey, [Switch]$MatchCase, [Switch]$Descending, [Alias('Depth')][int]$MaxDepth = 10 ) begin { [PSNode]::MaxDepth = $MaxDepth $Primary = @{} if ($PSBoundParameters.ContainsKey('PrimaryKey')) { for($i = 0; $i -lt $PrimaryKey.Count; $i++) { if ($Descending) { $Primary[$PrimaryKey[$i]] = [Char]254 + '#' * ($PrimaryKey.Count - $i) } else { $Primary[$PrimaryKey[$i]] = ' ' + '#' * $i } } } function SortObject([PSNode]$Node, [Switch]$SortIndex) { if ($Node.Structure -eq 'Scalar') { $SortKey = if ($Null -eq $($Node.Value)) { [Char]27 + '$Null' } elseif ($MatchCase) { "$($Node.Value)".ToUpper() } else { "$($Node.Value)" } $Output = @{ $SortKey = $($Node.Value) } } elseif ($Node.Structure -eq 'List') { # This will convert the list to an (fixed) array $Items = $Node.GetItemNodes().foreach{ SortObject $_ -SortIndex } $Items = $Items | Sort-Object -CaseSensitive:$MatchCase -Descending:$Descending { $_.Keys[0] } $String = [Collections.Generic.List[String]]::new() $List = [Collections.Generic.List[Object]]::new() foreach ($Item in $Items) { $SortKey = $Item.GetEnumerator().Name $String.Add($SortKey) $List.Add($Item[$SortKey][0]) } $Name = $String -Join [Char]255 $Output = @{ $Name = @($List) } } elseif ($Node.Structure -eq 'Dictionary') { # This will convert a dictionary to a PSCustomObject $HashTable = [HashTable]::New(0, [StringComparer]::Ordinal) $Node.GetItemNodes().foreach{ $SortObject = SortObject $_ -SortIndex $SortKey = $SortObject.GetEnumerator().Name if ($Primary.Contains($_.Key)) { $Key = $Primary[$_.Key] } else { $Key = $_.Key} $HashTable["$Key$([Char]255)$SortKey"] = @{ $_.Key = $SortObject[$SortKey] } } $SortedKeys = $HashTable.get_Keys() | Sort-Object -CaseSensitive:$MatchCase -Descending:$Descending $Properties = [System.Collections.Specialized.OrderedDictionary]::new([StringComparer]::Ordinal) @($SortedKeys).foreach{ $Item = $HashTable[$_] $Name = $Item.GetEnumerator().Name $Properties[$Name] = $Item[$Name] } $Name = $SortedKeys -Join [Char]255 $Output = @{ $Name = [PSCustomObject]$Properties } # https://github.com/PowerShell/PowerShell/issues/20753 } else { Write-Error 'Should not happen' } if ($SortIndex) { $Output } else { $Output.get_Values() } } } process { SortObject $InputObject $MaxDepth } } |