CodeCraft

1.0

Write-Parameter.ps1

function Write-Parameter {
    <#
    .Synopsis
        Writes a parameter attribute.
    .Description
        Writes a PowerShell parameter attribute.
    .Example
        Write-Parameter 'MyParameter' -Mandatory
    #>
    param(
    #The name of the parameter
    [Parameter(ValueFromPipelineByPropertyName=$true,Position=0)]        
    [string]$Name,
    # If set, will add a ParameterSetName ot the parameter attribute
    [Parameter(ValueFromPipelineByPropertyName=$true)]        
    [String]$ParameterSet,
    # If set, will add a HelpMessage to the parameter attribute
    [Parameter(ValueFromPipelineByPropertyName=$true)]
    [String]$HelpMessage,
    # If Set, the parameter attribute will be marked as mandatory
    [Parameter(ValueFromPipelineByPropertyName=$true)]
    [Switch]$Mandatory,
    # If Set, the parameter attribute will be marked to accept pipeline input
    [Parameter(ValueFromPipelineByPropertyName=$true)]
    [Switch]$FromPipeline,
    # If set, the parameter attribute will be marked to accept input from
    # the pipeline by property name
    [Parameter(ValueFromPipelineByPropertyName=$true)]
    [Switch]$FromPipelineByPropertyName,
    # IF set, the parameter attribut will use this position
    [Parameter(ValueFromPipelineByPropertyName=$true)]
    [int]$Position,        
    # If set, will add aliases to the parameter
    [Parameter(ValueFromPipelineByPropertyName=$true)]
    [Alias('Aliases')]
    [String[]]$Alias
    ) 
    
    process {
       
        $parameterText = "[Parameter("
        #region Parameter Inner Attributes
        if ($ParameterSet) {
            $ParameterText += "ParameterSetName='$ParameterSet',"
        }
        if ($Mandatory) {
            $ParameterText += 'Mandatory=$true,'
        }
        if ($FromPipeline) { 
            $ParameterText += 'ValueFromPipeline=$true,'
        }
        if ($FromPipelineByPropertyName) { 
            $ParameterText += 'ValueFromPipelineByPropertyName=$true,'
        }    
        if ($HelpMessage) {
            $ParameterText += "HelpMessage='$HelpMessage',"
            $parameterText = "
<#
$HelpMessage
#>
$ParameterText"
        }
        if ($psBoundParameters.Position) {
            $ParameterText += "Position='$Position',"
        }
        #endregion

        $ParameterText = $ParameterText.TrimEnd(",") + ")]"
        if ($Alias) {
            $OFS = "','"
            $parameterText+=@"
[Alias('$Alias')]
"@
        }
    
            if ($Name) {
                "$ParameterText
`$$name
                "
            } else {
                "$ParameterText
                "
            }
        
    }
}