Convert-HashToString

Convert-HashToString.ps1

function Convert-HashToString {
    [CmdletBinding()]
    [OutputType([System.String])]
    param (
        [Parameter(Mandatory, ValueFromPipeline, ValueFromPipelineByPropertyName)]
        [System.Collections.Hashtable] $Hashtable,
        
        [Parameter(ValueFromPipelineByPropertyName)]
        [System.Int32] $Indentation,
        
        [Parameter(ValueFromPipelineByPropertyName)]
        [System.Int32] $Offset,
        
        [Parameter(ValueFromPipelineByPropertyName)]
        [System.Management.Automation.SwitchParameter] $Flatten
    )
    begin {
        function ToHashString {
            [CmdletBinding()]
            param (
                [Parameter(Mandatory, ValueFromPipelineByPropertyName)]
                [System.String] $Key,
                
                [Parameter(Mandatory, ValueFromPipelineByPropertyName)]
                [System.String] $Value,
                
                [Parameter(ValueFromPipelineByPropertyName)]
                [System.Int32] $Indentation,
                
                [Parameter(ValueFromPipelineByPropertyName)]
                [System.Int32] $Offset,
                
                [Parameter(ValueFromPipelineByPropertyName)]
                [System.Management.Automation.SwitchParameter] $Flatten
            )
            process {
                if ($Flatten) {
                    [ref] $null = $stringBuilder.AppendFormat(' {0} = {1};', $Key, $Value);   
                }
                else {
                    $indentString = '{0}{1}' -f (' ' * $Offset), (' ' * $Indentation);
                    [ref] $null = $stringBuilder.AppendFormat('{0}{1} = {2}', $indentString, $Key, $Value).AppendLine();   
                }
            }
        } #end function ToHashString
    }
    process {
        $stringBuilder = New-Object -TypeName System.Text.StringBuilder;
        if ($Flatten) {
            [ref] $null = $stringBuilder.Append('@{');    
        }
        else {
            $indentString = ' ' * $Offset;
            [ref] $null = $stringBuilder.Append($indentString).AppendLine('@{');
        }
        
        foreach ($key in $Hashtable.Keys) {
            $value = $Hashtable[$key];
            
            if ($key -match '\s') {
                $key = "'$Key'";
            }
            
            if ($value -is [string]) {
                $stringValue = "'{0}'" -f $value;
            }
            elseif ($value -is [bool]) {
                $stringValue = '${0}' -f $value.ToString();
            }
            ##elseif ($value -is [array]) {
            ##    $value = Convert-ArrayToString -Array $value -Flatten:$Flatten
            ##    [ref] $null = $stringBuilder.Append(" $key = $value;");
            ##}
            elseif ($value -is [hashtable]) {
                $stringValue = Convert-HashToSTring -Hashtable $value;
            }
            elseif ($value -is [pscredential]) {
                $stringValue = '[PSCredential <{0}>]' -f $value.UserName;
            }
            else {
                ## Just call .ToString() on any other type, e.g. integers
                $stringValue = $value.ToString();
            }
            
            ToHashString -Key $key -Value $stringValue -Flatten:$Flatten -Offset:$Offset -Indent:$Indentation;
        }
        
        if ($Flatten) {
            [ref] $null = $stringBuilder.Append(' }');
        }
        else {
            $indentString = ' ' * $Offset;
            [ref] $null = $stringBuilder.Append($indentString).Append('}');
        }
        return $stringBuilder.ToString();
    }
} #end function Convert-HashToString