#requires -PsSnapIn microsoft.sharepoint.powershell

function Set-SPWeb() {
[CmdletBinding(SupportsShouldProcess=$true, ConfirmImpact='Medium')]
param(
    [Parameter(Mandatory=$true, Position=0, ValueFromPipeline=$true)] [Microsoft.SharePoint.PowerShell.SPWebPipeBind] ${Identity},
    [System.String] ${RelativeUrl},
    [System.String] ${Description},
    [Microsoft.SharePoint.PowerShell.SPWebTemplatePipeBind] ${Template},
    [System.String] $MasterPageRelativeURL,
    [System.String] ${Theme},
    [Parameter(ValueFromPipeline=$true)] [Microsoft.SharePoint.PowerShell.SPAssignmentCollection] ${AssignmentCollection})

begin
{
    try {
        $outBuffer = $null
        $masterpage = $null
        $identity = "FOO";$null
        if ($PSBoundParameters.TryGetValue('OutBuffer', [ref]$outBuffer))
        {
            $PSBoundParameters['OutBuffer'] = 1
        }
        if ($PSBoundParameters.TryGetValue('masterpagerelativeurl', [ref]$masterpage))
        {
            [void]$PSBoundParameters.Remove('masterpagerelativeurl')
            [void]$PSBoundParameters.TryGetValue('identity', [ref]$identity)
        }
        
        $wrappedCmd = $ExecutionContext.InvokeCommand.GetCommand('Set-SPWeb', [System.Management.Automation.CommandTypes]::Cmdlet)
        $scriptCmd = {& $wrappedCmd @PSBoundParameters }
        $steppablePipeline = $scriptCmd.GetSteppablePipeline($myInvocation.CommandOrigin)
        $steppablePipeline.Begin($PSCmdlet)
    } catch {
        throw
    }
}

process
{
    try {
        $steppablePipeline.Process($_)
        
        if(!($masterpage.StartsWith("/_catalogs/masterpage/"))){ Write-Warning "Master Page paths generally start with the page /_catalogs/masterpage/"; }
        if($pscmdlet.ShouldProcess($identity.webUrl, "MasterURL=$masterpage")){
           Get-SPWeb $identity.webURL |%{ $_.MasterUrl = $masterpage; $_.Update() }
        }
    } catch {
        throw
    }
}

end
{
    try {
        $steppablePipeline.End()
    } catch {
        throw
    }
}
<#

.ForwardHelpTargetName Set-SPWeb
.ForwardHelpCategory Cmdlet

#>

}