dthunziker/Create-XmlSitemap.ps1

## Create-XmlSitemap.ps1
function Create-XmlSitemap {
    <#
        .SYNOPSIS
            Generates an XML sitemap.

        .PARAMETER SiteName
            The name of the site defintion to generate the sitemap for. If omitted, the site definition matching the host name will be used.

        .PARAMETER HostName
            The host name that will appear in URLs. If omitted, the first hostname from the site definition will be used.

        .PARAMETER HttpProtocol
            The protocol that will appear in URLs. Defaults to "https".

        .PARAMETER StartPath
            The starting path for where to crawl items. If omitted, this will default to the StartPath of the site definition.

        .PARAMETER FileName
            The name of the file to generate. Defaults to "sitemap_[SiteName].xml".

        .PARAMETER TargetPath
            The destination path for where to generate the XML file. If omitted, this will default to your application's root directory.

        .PARAMETER UrlOptions
            The options to use when generating URLs. If omitted, the default URL options will be used. (i.e. Sitecore.Links.LinkManager.GetDefaultUrlOptions())

        .PARAMETER DefaultLanguage
            The default language. If omitted, the site definitions default language will be used. The URL for this language will appear in the loc element.

        .PARAMETER Languages
            A list of languages to generate links for. If omitted, the item's language collection will be used.

        .PARAMETER AppendLinks
            Determines whether or not to include the xhtml:link elements, which includes all the specified Languages, with each URL. Defaults to true.

        .PARAMETER LastModifiedFieldName
            The name of the Last Modified Datetime field, used for generating <lastmod> elements. (ex: __Updated)

        .PARAMETER ChangeFrequencyFieldName
            The name of the Change Frequency field, used for generating <changefreq> elements. (example values: always, hourly, daily, monthly)

        .PARAMETER PriorityFieldName
            The name of the Priority field, used for generating <priority> elements. (example values: 1.0, 0.9, 0.5)

        .PARAMETER Database
            The name of the database to use while searching for items. Defaults to 'web'.

        .PARAMETER TrailingSlash
            Determines whether or not to append a trailing slash to URLs. Defaults to false.

        .PARAMETER ShowProgress
            Determines whether or not to show progress in the SPE console. Defaults to true.

        .PARAMETER WhitelistCheckboxFieldNames
            A comma separated list of checkbox field names and the value the name should match, used to determine which items should be included in the sitemap.

        .PARAMETER WhitelistTemplateNames
            A comma separated list of template names. Items inheriting from these templates will be included in the sitemap.

        .PARAMETER BlacklistFilePaths
            An array of file paths. This file path and all its subitems will be included in the sitemap.

        .PARAMETER BlacklistCheckboxFieldNames
            A comma separated list of checkbox field names and the value the name should match, used to determine which items should be excluded from the sitemap.

        .PARAMETER BlacklistTemplateNames
            A comma separated list of template names. Items inheriting from these templates will be excluded from the sitemap.

        .PARAMETER BlacklistFilePaths
            An array of file paths. This file path and all its subitems will be excluded from the sitemap.

        .PARAMETER StripDefaultLanguageFromHomepage
            Strips the default language from the homepage URL. Defaults to false.

        .PARAMETER StripDefaultLanguageFromLocUrls
            Strips the default lanauge from all <loc> URLs. Defaults to false.

        .PARAMETER StripDefaultLanguageFromAltUrls
            Strips the default lanauge from all URLs (both <loc> and <alternate>). Defaults to false.

        .PARAMETER MediaLibraryPath
            The full path to the media library item to create/update with the Sitemap. If set, this setting takes precidence over the TargetPath option.

        .PARAMETER PublishMediaItem
            Determines whether or not to publish the sitemap media item after updating it. Defaults to false.

        .PARAMETER PublishingOptions
            The Sitecore.Publishing.PublishOptions used if PublishMediaItem is set to true. By default, the sitemap media item will be be published from master to web.

        .EXAMPLE
            Generate a sitemap for the default website

            PS master:\> Generate-Sitemap

        .NOTES
            Derek Hunziker
            www.layerworks.com
            @dthunziker
    #>
    [CmdletBinding()]
    param (
        [string]$SiteName,

        [string]$HostName = $null,

        [ValidateNotNullOrEmpty()]
        [string]$HttpProtocol = "https",

        [string]$StartPath,

        [string]$FileName,

        [ValidateNotNullOrEmpty()]
        [string]$TargetPath = $AppPath,

        [ValidateNotNull()]
        [Sitecore.Links.UrlOptions]$UrlOptions = [Sitecore.Links.LinkManager]::GetDefaultUrlOptions(),

        [string]$DefaultLanguage,

        [string]$Languages,

        [ValidateNotNull()]
        [bool]$AppendLinks = $true,

        [string]$LastModifiedFieldName,

        [string]$ChangeFrequencyFieldName,

        [string]$PriorityFieldName,

        [ValidateNotNullOrEmpty()]
        [string]$Database = "web",

        [ValidateNotNull()]
        [bool]$TrailingSlash = $false,

        [ValidateNotNull()]
        [bool]$ShowProgress = $true,

        [hashtable]$WhitelistCheckboxFieldNames,

        [string]$WhitelistTemplateNames,

        [array]$WhitelistFilePaths,

        [hashtable]$BlacklistCheckboxFieldNames,

        [string]$BlacklistTemplateNames,

        [array]$BlacklistFilePaths,

        [ValidateNotNull()]
        [bool]$StripDefaultLanguageFromHomepage = $false,

        [ValidateNotNull()]
        [bool]$StripDefaultLanguageFromLocUrls = $false,

        [ValidateNotNull()]
        [bool]$StripDefaultLanguageFromAltUrls = $false,

        [string]$MediaLibraryPath = $null,

        [bool]$PublishMediaItem = $false,

        [Sitecore.Publishing.PublishOptions]$PublishingOptions = $null

    )
    begin {

        $stopWatch = [System.Diagnostics.Stopwatch]::StartNew()

        # Resolve site name using the host, if not specified.
        if ([string]::IsNullOrEmpty($SiteName)) {
            $site = [Sitecore.Sites.SiteContextFactory]::GetSiteContext($HostName, "/")
            if ($site -ne $null) {
                $SiteName = $site.Name
            }
            if ([string]::IsNullOrEmpty($SiteName)) {
                $SiteName = "website"
            }
        }

        # Blow up if a site could not be resolved.
        $site = [Sitecore.Sites.SiteContext]::GetSite($SiteName)
        if ($site -eq $null) {
            throw [System.Exception] "$SiteName site definition not found."
        }

        # Use the site definition's default host name (or current host name) if one was not specified.
        if ([string]::IsNullOrEmpty($HostName)) {
            if (![string]::IsNullOrEmpty($site.HostName)) {
                $HostName = $site.HostName.Split("|")[0]
            }
            else {
                $HostName = "localhost"
            }
        }

        # Use the site definition's language if no default language was defined.
        if ([string]::IsNullOrEmpty($DefaultLanguage)) {
            $DefaultLanguage = $site.Language
            if ([string]::IsNullOrEmpty($DefaultLanguage)) {
                $DefaultLanguage = "en"
            }
        }

        # Use the site definition's start path if no starting path was defined.
        if ([string]::IsNullOrEmpty($StartPath)) {
            $StartPath = $site.StartPath
        }

        # Use sitemap_[sitename].xml as the filename if one wasn't specified.
        if ([string]::IsNullOrEmpty($FileName)) {
            $FileName = "sitemap_" + $site.Name + ".xml"
        }

        # We'll be including the protocol and host manually
        $UrlOptions.AlwaysIncludeServerUrl = $false
        $UrlOptions.Site = $site;
    }
    process {

        $itemsToProcess = New-Object System.Collections.Generic.List[System.Object]
        $script:totalProcessed = 0
        $script:totalLocs = 0
        $script:totalAlts = 0
        $script:totalSkipped = 0

        function Get-Url($item, $alt = $false) {

            $defaultLang = "/$DefaultLanguage";
            $url = [Sitecore.Links.LinkManager]::GetItemUrl($item, $UrlOptions)

            # Strip default language from homepage
            if ($StripDefaultLanguageFromHomepage -eq $true -and $url -eq $defaultLang) {
                $url = ""
            }

            # Strip default language from location urls
            if ($alt -eq $false -and $StripDefaultLanguageFromLocUrls -eq $true -and $url.StartsWith($defaultLang)) {
                $url = $url.Substring($url.IndexOf($defaultLang) + $defaultLang.Length)
            }

            # Strip default language from alternate urls
            if ($alt -eq $true -and $StripDefaultLanguageFromAltUrls -eq $true -and $url.StartsWith($defaultLang)) {
                $url = $url.Substring($url.IndexOf($defaultLang) + $defaultLang.Length)
            }

            # Append trailing slash, if specified
            if ($TrailingSlash -eq $true -and !$url.EndsWith("/")) {
                $url = $url + "/"
            }

            if (-not ($url.StartsWith("http"))) {
                $url = $HttpProtocol + "://" + $HostName + $url
            }

            return $url
        }

        function Is-Derived($item, $templateName) {
            if ($item -eq $null -or [string]::IsNullOrEmpty($templateName)) {
                return $false
            }
            $itemTemplate = [Sitecore.Data.Managers.TemplateManager]::GetTemplate($item);
            return $itemTemplate -ne $null -and ($itemTemplate.Name -eq $templateName -or $itemTemplate.InheritsFrom($templateName))
        }

        function Is-Child($item, $filePath) {
            if ($item -eq $null -or [string]::IsNullOrEmpty($filePath)) {
                return $false
            }
            $itemPath = $item.Paths.FullPath
            return $itemPath -ne $null -and ($itemPath -like "*$filePath*")
        }

        function Get-Qualified-Items($items) {

            $counter = 0
            $qualifiedItems = New-Object System.Collections.Generic.List[System.Object]

            $items | ForEach-Object {

                if ($ShowProgress) {
                    Write-Progress `
                        -Activity "Qualifying Items" `
                        -Status "Determining what items to include..." `
                        -PercentComplete (($counter / $items.Count) * 100);
                }

                $item = $_

                # Skip items with no presentation
                if ($item.Visualization.Layout -eq $null) {
                    $script:totalSkipped++
                    return
                }

                # Skip items that aren't whitelisted
                if ($WhitelistCheckboxFieldNames.Count -ne 0 -and $WhitelistCheckboxFieldNames -ne $null) {
                    $valid = $false
                    ForEach ($cb In $WhitelistCheckboxFieldNames.GetEnumerator()) {
                        if ($item[$cb.Name] -eq $cb.Value) {
                            $valid = $true
                        }
                    }
                    if (!$valid) {
                        $script:totalSkipped++
                        return
                    }
                }

                $whitelistTemplates = $WhitelistTemplateNames.Split(",", [System.StringSplitOptions]::RemoveEmptyEntries)
                ForEach ($templateName In $whitelistTemplates) {
                    if ((Is-Derived $item $templateName.Trim()) -eq $false) {
                        $script:totalSkipped++
                        return
                    }
                }

                ForEach ($filePath In $WhitelistFilePaths) {
                    if ((Is-Child $item $filePath.Trim()) -eq $false) {
                        $script:totalSkipped++
                        return
                    }
                }

                # Skip blacklisted items
                if ($BlacklistCheckboxFieldNames.Count -ne 0 -and $BlacklistCheckboxFieldNames -ne $null) {
                    $valid = $true
                    ForEach ($cb In $BlacklistCheckboxFieldNames.GetEnumerator()) {
                        if ($item[$cb.Name] -eq $cb.Value) {
                            $valid = $false
                        }
                    }
                    if (!$valid) {
                        $script:totalSkipped++
                        return
                    }
                }

                $blacklistTemplates = $BlacklistTemplateNames.Split(",", [System.StringSplitOptions]::RemoveEmptyEntries)
                ForEach ($templateName In $blacklistTemplates) {
                    if ((Is-Derived $item $templateName.Trim()) -eq $true) {
                        $script:totalSkipped++
                        return
                    }
                }

                ForEach ($filePath In $BlacklistFilePaths) {
                    if ((Is-Child $item $filePath.Trim()) -eq $true) {
                        $script:totalSkipped++
                        return
                    }
                }

                $qualifiedItems.Add($item)
                $counter++
            }

            return $qualifiedItems
        }

        function Append-Loc($item, $url, $doc) {

            $loc = $doc.CreateElement("loc")

            $langSwitcher = New-Object Sitecore.Globalization.LanguageSwitcher $DefaultLanguage
            $loc.InnerText = Get-Url $item $true
            $url.AppendChild($loc) | Out-null
            $langSwitcher.Dispose()

            if ($AppendLinks) {
                # Use the item's languages if no explicit ones were specified
                $languagesToProcess = $Languages.Split(",", [System.StringSplitOptions]::RemoveEmptyEntries)
                if ($languagesToProcess.Count -eq 0) {
                    $languagesToProcess = @($item.Languages | Select-Object -ExpandProperty Name)
                }

                $languagesToProcess | ForEach-Object {

                    $language = $_.Trim()

                    # Ensure there's a version for this language, or that we're not enforcing version presence
                    if ([Sitecore.Data.Managers.ItemManager]::GetVersions($item, $language).Count -gt 0 -or $item[[Sitecore.FieldIDs]::EnforceVersionPresence] -ne "1") {

                        $langSwitcher = New-Object Sitecore.Globalization.LanguageSwitcher $language
                        $link = $doc.CreateElement("xhtml", "link", "http://www.w3.org/1999/xhtml")
                        $link.SetAttribute("rel", "alternate")
                        $link.SetAttribute("hreflang", $language)
                        $link.SetAttribute("href", (Get-Url $item $true))
                        $langSwitcher.Dispose()

                        $url.AppendChild($link) | Out-null
                        $script:totalAlts++
                    }
                }
            }
        }

        function Append-LastMod($item, $url, $doc) {
            if (![string]::IsNullOrEmpty($LastModifiedFieldName)) {
                $date = ([Sitecore.DateUtil]::IsoDateToDateTime($item[$LastModifiedFieldName]))
                $mod = $doc.CreateElement("lastmod")
                $mod.InnerText = $date.ToString("s") + "Z"
                $url.AppendChild($mod) | Out-null
            }
        }

        function Append-ChangeFreq($item, $url, $doc) {
            if (![string]::IsNullOrEmpty($ChangeFrequencyFieldName)) {
                $freq = $doc.CreateElement("changefreq")
                $freq.InnerText = $item[$ChangeFrequencyFieldName]
                $url.AppendChild($freq) | Out-null
            }
        }

        function Append-Priority($item, $url, $doc) {
            if (![string]::IsNullOrEmpty($PriorityFieldName)) {
                $pri = $doc.CreateElement("priority")
                $pri.InnerText = $item[$PriorityFieldName]
                $url.AppendChild($pri) | Out-null
            }
        }

        function Get-ItemsRecursive($item) {
            $itemsToProcess.Add($item)
            foreach ($child in $item.Children) {
                Get-ItemsRecursive $child
            }
        }

        $error.clear()

        # XML Document Setup
        [xml]$doc = New-Object System.Xml.XmlDocument
        $docNode = $doc.CreateXmlDeclaration("1.0", "UTF-8", $null)
        $doc.AppendChild($docNode) | Out-null
        $urlSet = $doc.CreateElement("urlset")
        $urlSet.SetAttribute("xmlns", "http://www.sitemaps.org/schemas/sitemap/0.9")
        $urlSet.SetAttribute("xmlns:xhtml", "http://www.w3.org/1999/xhtml")

        if ($ShowProgress) {
            Write-Progress `
                -Activity "Initalizing" `
                -Status "Loading items into memory...";
        }

        cd ($Database + ":" + $StartPath)

        Get-ItemsRecursive (Get-Item .)

        $script:totalProcessed = $itemsToProcess.Count

        $itemsToProcess = Get-Qualified-Items $itemsToProcess

        $itemsToProcess | ForEach-Object {

            $item = $_

            if ($ShowProgress) {
                Write-Progress `
                    -Activity "Generating Sitemap" `
                    -Status "Processing pages..." `
                    -PercentComplete (($itemCounter / $itemsToProcess.Count) * 100);
            }

            $url = $doc.CreateElement("url")

            Append-Loc $item $url $doc
            Append-LastMod $item $url $doc
            Append-ChangeFreq $item $url $doc
            Append-Priority $item $url $doc

            $urlSet.AppendChild($url) | Out-null
            $script:totalLocs++
        }

        $doc.AppendChild($urlSet) | Out-null
        [string]$target = ""

        # Check if the MediaLibraryPath variable is set, if so write the sitemap to that item.
        if (![string]::IsNullOrEmpty($MediaLibraryPath)) {
            $target = $MediaLibraryPath
            $stream = New-Object System.IO.MemoryStream
            $doc.Save($stream)
            [Sitecore.Resources.Media.MediaManager]::Creator.AttachStreamToMediaItem($stream, $MediaLibraryPath, $FileName, [Sitecore.Resources.Media.MediaCreatorOptions]::Empty) | Out-null
            $stream.Dispose()

            # Check if the media item should be published.
            if ($PublishMediaItem) {
                if ($PublishingOptions -eq $null) {
                    $masterDB = [Sitecore.Configuration.Factory]::GetDatabase("master")
                    $webDB = [Sitecore.Configuration.Factory]::GetDatabase("web")

                    $PublishingOptions = New-Object Sitecore.Publishing.PublishOptions($masterDB, $webDB, [Sitecore.Publishing.PublishMode]::SingleItem, [Sitecore.Context]::Language, [System.DateTime]::Now)
                    $PublishingOptions.RootItem = Get-Item "master:$MediaLibraryPath"
                    $PublishingOptions.Deep = $false
                }

                $publisher = New-Object Sitecore.Publishing.Publisher $PublishingOptions
                $publisher.Publish()
            }
        }

        # Output to file.
        else {
            $target = "$TargetPath$FileName"
            $doc.Save($target)
        }

        $stopWatch.Stop()
    }
    end {
        $report = @{
            TotalItemsProcessed = $script:totalProcessed
            TotalUrls           = ($script:totalLocs + $script:totalAlts).ToString() + " ($script:totalLocs urls, $script:totalAlts alternate urls)"
            SkippedUrls         = $script:totalSkipped
            ElapsedSeconds      = $stopWatch.Elapsed.TotalSeconds
            Parameters          = $PsBoundParameters
            WrittenTo           = $target
        }
        if (!$error) {
            Write-Host ($report | Format-Table | Out-String)
        }
    }
}
	function Create-XmlSitemap {
	<#
	.SYNOPSIS
	Generates an XML sitemap.

	.PARAMETER SiteName
	The name of the site defintion to generate the sitemap for. If omitted, the site definition matching the host name will be used.

	.PARAMETER HostName
	The host name that will appear in URLs. If omitted, the first hostname from the site definition will be used.

	.PARAMETER HttpProtocol
	The protocol that will appear in URLs. Defaults to "https".

	.PARAMETER StartPath
	The starting path for where to crawl items. If omitted, this will default to the StartPath of the site definition.

	.PARAMETER FileName
	The name of the file to generate. Defaults to "sitemap_[SiteName].xml".

	.PARAMETER TargetPath
	The destination path for where to generate the XML file. If omitted, this will default to your application's root directory.

	.PARAMETER UrlOptions
	The options to use when generating URLs. If omitted, the default URL options will be used. (i.e. Sitecore.Links.LinkManager.GetDefaultUrlOptions())

	.PARAMETER DefaultLanguage
	The default language. If omitted, the site definitions default language will be used. The URL for this language will appear in the loc element.

	.PARAMETER Languages
	A list of languages to generate links for. If omitted, the item's language collection will be used.

	.PARAMETER AppendLinks
	Determines whether or not to include the xhtml:link elements, which includes all the specified Languages, with each URL. Defaults to true.

	.PARAMETER LastModifiedFieldName
	The name of the Last Modified Datetime field, used for generating <lastmod> elements. (ex: __Updated)

	.PARAMETER ChangeFrequencyFieldName
	The name of the Change Frequency field, used for generating <changefreq> elements. (example values: always, hourly, daily, monthly)

	.PARAMETER PriorityFieldName
	The name of the Priority field, used for generating <priority> elements. (example values: 1.0, 0.9, 0.5)

	.PARAMETER Database
	The name of the database to use while searching for items. Defaults to 'web'.

	.PARAMETER TrailingSlash
	Determines whether or not to append a trailing slash to URLs. Defaults to false.

	.PARAMETER ShowProgress
	Determines whether or not to show progress in the SPE console. Defaults to true.

	.PARAMETER WhitelistCheckboxFieldNames
	A comma separated list of checkbox field names and the value the name should match, used to determine which items should be included in the sitemap.

	.PARAMETER WhitelistTemplateNames
	A comma separated list of template names. Items inheriting from these templates will be included in the sitemap.

	.PARAMETER BlacklistFilePaths
	An array of file paths. This file path and all its subitems will be included in the sitemap.

	.PARAMETER BlacklistCheckboxFieldNames
	A comma separated list of checkbox field names and the value the name should match, used to determine which items should be excluded from the sitemap.

	.PARAMETER BlacklistTemplateNames
	A comma separated list of template names. Items inheriting from these templates will be excluded from the sitemap.

	.PARAMETER BlacklistFilePaths
	An array of file paths. This file path and all its subitems will be excluded from the sitemap.

	.PARAMETER StripDefaultLanguageFromHomepage
	Strips the default language from the homepage URL. Defaults to false.

	.PARAMETER StripDefaultLanguageFromLocUrls
	Strips the default lanauge from all <loc> URLs. Defaults to false.

	.PARAMETER StripDefaultLanguageFromAltUrls
	Strips the default lanauge from all URLs (both <loc> and <alternate>). Defaults to false.

	.PARAMETER MediaLibraryPath
	The full path to the media library item to create/update with the Sitemap. If set, this setting takes precidence over the TargetPath option.

	.PARAMETER PublishMediaItem
	Determines whether or not to publish the sitemap media item after updating it. Defaults to false.

	.PARAMETER PublishingOptions
	The Sitecore.Publishing.PublishOptions used if PublishMediaItem is set to true. By default, the sitemap media item will be be published from master to web.

	.EXAMPLE
	Generate a sitemap for the default website

	PS master:\> Generate-Sitemap

	.NOTES
	Derek Hunziker
	www.layerworks.com
	@dthunziker
	#>
	[CmdletBinding()]
	param (
	[string]$SiteName,

	[string]$HostName = $null,

	[ValidateNotNullOrEmpty()]
	[string]$HttpProtocol = "https",

	[string]$StartPath,

	[string]$FileName,

	[ValidateNotNullOrEmpty()]
	[string]$TargetPath = $AppPath,

	[ValidateNotNull()]
	[Sitecore.Links.UrlOptions]$UrlOptions = [Sitecore.Links.LinkManager]::GetDefaultUrlOptions(),

	[string]$DefaultLanguage,

	[string]$Languages,

	[ValidateNotNull()]
	[bool]$AppendLinks = $true,

	[string]$LastModifiedFieldName,

	[string]$ChangeFrequencyFieldName,

	[string]$PriorityFieldName,

	[ValidateNotNullOrEmpty()]
	[string]$Database = "web",

	[ValidateNotNull()]
	[bool]$TrailingSlash = $false,

	[ValidateNotNull()]
	[bool]$ShowProgress = $true,

	[hashtable]$WhitelistCheckboxFieldNames,

	[string]$WhitelistTemplateNames,

	[array]$WhitelistFilePaths,

	[hashtable]$BlacklistCheckboxFieldNames,

	[string]$BlacklistTemplateNames,

	[array]$BlacklistFilePaths,

	[ValidateNotNull()]
	[bool]$StripDefaultLanguageFromHomepage = $false,

	[ValidateNotNull()]
	[bool]$StripDefaultLanguageFromLocUrls = $false,

	[ValidateNotNull()]
	[bool]$StripDefaultLanguageFromAltUrls = $false,

	[string]$MediaLibraryPath = $null,

	[bool]$PublishMediaItem = $false,

	[Sitecore.Publishing.PublishOptions]$PublishingOptions = $null

	)
	begin {

	$stopWatch = [System.Diagnostics.Stopwatch]::StartNew()

	# Resolve site name using the host, if not specified.
	if ([string]::IsNullOrEmpty($SiteName)) {
	$site = [Sitecore.Sites.SiteContextFactory]::GetSiteContext($HostName, "/")
	if ($site -ne $null) {
	$SiteName = $site.Name
	}
	if ([string]::IsNullOrEmpty($SiteName)) {
	$SiteName = "website"
	}
	}

	# Blow up if a site could not be resolved.
	$site = [Sitecore.Sites.SiteContext]::GetSite($SiteName)
	if ($site -eq $null) {
	throw [System.Exception] "$SiteName site definition not found."
	}

	# Use the site definition's default host name (or current host name) if one was not specified.
	if ([string]::IsNullOrEmpty($HostName)) {
	if (![string]::IsNullOrEmpty($site.HostName)) {
	$HostName = $site.HostName.Split("\|")[0]
	}
	else {
	$HostName = "localhost"
	}
	}

	# Use the site definition's language if no default language was defined.
	if ([string]::IsNullOrEmpty($DefaultLanguage)) {
	$DefaultLanguage = $site.Language
	if ([string]::IsNullOrEmpty($DefaultLanguage)) {
	$DefaultLanguage = "en"
	}
	}

	# Use the site definition's start path if no starting path was defined.
	if ([string]::IsNullOrEmpty($StartPath)) {
	$StartPath = $site.StartPath
	}

	# Use sitemap_[sitename].xml as the filename if one wasn't specified.
	if ([string]::IsNullOrEmpty($FileName)) {
	$FileName = "sitemap_" + $site.Name + ".xml"
	}

	# We'll be including the protocol and host manually
	$UrlOptions.AlwaysIncludeServerUrl = $false
	$UrlOptions.Site = $site;
	}
	process {

	$itemsToProcess = New-Object System.Collections.Generic.List[System.Object]
	$script:totalProcessed = 0
	$script:totalLocs = 0
	$script:totalAlts = 0
	$script:totalSkipped = 0

	function Get-Url($item, $alt = $false) {

	$defaultLang = "/$DefaultLanguage";
	$url = [Sitecore.Links.LinkManager]::GetItemUrl($item, $UrlOptions)

	# Strip default language from homepage
	if ($StripDefaultLanguageFromHomepage -eq $true -and $url -eq $defaultLang) {
	$url = ""
	}

	# Strip default language from location urls
	if ($alt -eq $false -and $StripDefaultLanguageFromLocUrls -eq $true -and $url.StartsWith($defaultLang)) {
	$url = $url.Substring($url.IndexOf($defaultLang) + $defaultLang.Length)
	}

	# Strip default language from alternate urls
	if ($alt -eq $true -and $StripDefaultLanguageFromAltUrls -eq $true -and $url.StartsWith($defaultLang)) {
	$url = $url.Substring($url.IndexOf($defaultLang) + $defaultLang.Length)
	}

	# Append trailing slash, if specified
	if ($TrailingSlash -eq $true -and !$url.EndsWith("/")) {
	$url = $url + "/"
	}

	if (-not ($url.StartsWith("http"))) {
	$url = $HttpProtocol + "://" + $HostName + $url
	}

	return $url
	}

	function Is-Derived($item, $templateName) {
	if ($item -eq $null -or [string]::IsNullOrEmpty($templateName)) {
	return $false
	}
	$itemTemplate = [Sitecore.Data.Managers.TemplateManager]::GetTemplate($item);
	return $itemTemplate -ne $null -and ($itemTemplate.Name -eq $templateName -or $itemTemplate.InheritsFrom($templateName))
	}

	function Is-Child($item, $filePath) {
	if ($item -eq $null -or [string]::IsNullOrEmpty($filePath)) {
	return $false
	}
	$itemPath = $item.Paths.FullPath
	return $itemPath -ne $null -and ($itemPath -like "$filePath")
	}

	function Get-Qualified-Items($items) {

	$counter = 0
	$qualifiedItems = New-Object System.Collections.Generic.List[System.Object]

	$items \| ForEach-Object {

	if ($ShowProgress) {
	Write-Progress `
	-Activity "Qualifying Items" `
	-Status "Determining what items to include..." `
	-PercentComplete (($counter / $items.Count) * 100);
	}

	$item = $_

	# Skip items with no presentation
	if ($item.Visualization.Layout -eq $null) {
	$script:totalSkipped++
	return
	}

	# Skip items that aren't whitelisted
	if ($WhitelistCheckboxFieldNames.Count -ne 0 -and $WhitelistCheckboxFieldNames -ne $null) {
	$valid = $false
	ForEach ($cb In $WhitelistCheckboxFieldNames.GetEnumerator()) {
	if ($item[$cb.Name] -eq $cb.Value) {
	$valid = $true
	}
	}
	if (!$valid) {
	$script:totalSkipped++
	return
	}
	}

	$whitelistTemplates = $WhitelistTemplateNames.Split(",", [System.StringSplitOptions]::RemoveEmptyEntries)
	ForEach ($templateName In $whitelistTemplates) {
	if ((Is-Derived $item $templateName.Trim()) -eq $false) {
	$script:totalSkipped++
	return
	}
	}

	ForEach ($filePath In $WhitelistFilePaths) {
	if ((Is-Child $item $filePath.Trim()) -eq $false) {
	$script:totalSkipped++
	return
	}
	}

	# Skip blacklisted items
	if ($BlacklistCheckboxFieldNames.Count -ne 0 -and $BlacklistCheckboxFieldNames -ne $null) {
	$valid = $true
	ForEach ($cb In $BlacklistCheckboxFieldNames.GetEnumerator()) {
	if ($item[$cb.Name] -eq $cb.Value) {
	$valid = $false
	}
	}
	if (!$valid) {
	$script:totalSkipped++
	return
	}
	}

	$blacklistTemplates = $BlacklistTemplateNames.Split(",", [System.StringSplitOptions]::RemoveEmptyEntries)
	ForEach ($templateName In $blacklistTemplates) {
	if ((Is-Derived $item $templateName.Trim()) -eq $true) {
	$script:totalSkipped++
	return
	}
	}

	ForEach ($filePath In $BlacklistFilePaths) {
	if ((Is-Child $item $filePath.Trim()) -eq $true) {
	$script:totalSkipped++
	return
	}
	}

	$qualifiedItems.Add($item)
	$counter++
	}

	return $qualifiedItems
	}

	function Append-Loc($item, $url, $doc) {

	$loc = $doc.CreateElement("loc")

	$langSwitcher = New-Object Sitecore.Globalization.LanguageSwitcher $DefaultLanguage
	$loc.InnerText = Get-Url $item $true
	$url.AppendChild($loc) \| Out-null
	$langSwitcher.Dispose()

	if ($AppendLinks) {
	# Use the item's languages if no explicit ones were specified
	$languagesToProcess = $Languages.Split(",", [System.StringSplitOptions]::RemoveEmptyEntries)
	if ($languagesToProcess.Count -eq 0) {
	$languagesToProcess = @($item.Languages \| Select-Object -ExpandProperty Name)
	}

	$languagesToProcess \| ForEach-Object {

	$language = $_.Trim()

	# Ensure there's a version for this language, or that we're not enforcing version presence
	if ([Sitecore.Data.Managers.ItemManager]::GetVersions($item, $language).Count -gt 0 -or $item[[Sitecore.FieldIDs]::EnforceVersionPresence] -ne "1") {

	$langSwitcher = New-Object Sitecore.Globalization.LanguageSwitcher $language
	$link = $doc.CreateElement("xhtml", "link", "http://www.w3.org/1999/xhtml")
	$link.SetAttribute("rel", "alternate")
	$link.SetAttribute("hreflang", $language)
	$link.SetAttribute("href", (Get-Url $item $true))
	$langSwitcher.Dispose()

	$url.AppendChild($link) \| Out-null
	$script:totalAlts++
	}
	}
	}
	}

	function Append-LastMod($item, $url, $doc) {
	if (![string]::IsNullOrEmpty($LastModifiedFieldName)) {
	$date = ([Sitecore.DateUtil]::IsoDateToDateTime($item[$LastModifiedFieldName]))
	$mod = $doc.CreateElement("lastmod")
	$mod.InnerText = $date.ToString("s") + "Z"
	$url.AppendChild($mod) \| Out-null
	}
	}

	function Append-ChangeFreq($item, $url, $doc) {
	if (![string]::IsNullOrEmpty($ChangeFrequencyFieldName)) {
	$freq = $doc.CreateElement("changefreq")
	$freq.InnerText = $item[$ChangeFrequencyFieldName]
	$url.AppendChild($freq) \| Out-null
	}
	}

	function Append-Priority($item, $url, $doc) {
	if (![string]::IsNullOrEmpty($PriorityFieldName)) {
	$pri = $doc.CreateElement("priority")
	$pri.InnerText = $item[$PriorityFieldName]
	$url.AppendChild($pri) \| Out-null
	}
	}

	function Get-ItemsRecursive($item) {
	$itemsToProcess.Add($item)
	foreach ($child in $item.Children) {
	Get-ItemsRecursive $child
	}
	}

	$error.clear()

	# XML Document Setup
	[xml]$doc = New-Object System.Xml.XmlDocument
	$docNode = $doc.CreateXmlDeclaration("1.0", "UTF-8", $null)
	$doc.AppendChild($docNode) \| Out-null
	$urlSet = $doc.CreateElement("urlset")
	$urlSet.SetAttribute("xmlns", "http://www.sitemaps.org/schemas/sitemap/0.9")
	$urlSet.SetAttribute("xmlns:xhtml", "http://www.w3.org/1999/xhtml")

	if ($ShowProgress) {
	Write-Progress `
	-Activity "Initalizing" `
	-Status "Loading items into memory...";
	}

	cd ($Database + ":" + $StartPath)

	Get-ItemsRecursive (Get-Item .)

	$script:totalProcessed = $itemsToProcess.Count

	$itemsToProcess = Get-Qualified-Items $itemsToProcess

	$itemsToProcess \| ForEach-Object {

	$item = $_

	if ($ShowProgress) {
	Write-Progress `
	-Activity "Generating Sitemap" `
	-Status "Processing pages..." `
	-PercentComplete (($itemCounter / $itemsToProcess.Count) * 100);
	}

	$url = $doc.CreateElement("url")

	Append-Loc $item $url $doc
	Append-LastMod $item $url $doc
	Append-ChangeFreq $item $url $doc
	Append-Priority $item $url $doc

	$urlSet.AppendChild($url) \| Out-null
	$script:totalLocs++
	}

	$doc.AppendChild($urlSet) \| Out-null
	[string]$target = ""

	# Check if the MediaLibraryPath variable is set, if so write the sitemap to that item.
	if (![string]::IsNullOrEmpty($MediaLibraryPath)) {
	$target = $MediaLibraryPath
	$stream = New-Object System.IO.MemoryStream
	$doc.Save($stream)
	[Sitecore.Resources.Media.MediaManager]::Creator.AttachStreamToMediaItem($stream, $MediaLibraryPath, $FileName, [Sitecore.Resources.Media.MediaCreatorOptions]::Empty) \| Out-null
	$stream.Dispose()

	# Check if the media item should be published.
	if ($PublishMediaItem) {
	if ($PublishingOptions -eq $null) {
	$masterDB = [Sitecore.Configuration.Factory]::GetDatabase("master")
	$webDB = [Sitecore.Configuration.Factory]::GetDatabase("web")

	$PublishingOptions = New-Object Sitecore.Publishing.PublishOptions($masterDB, $webDB, [Sitecore.Publishing.PublishMode]::SingleItem, [Sitecore.Context]::Language, [System.DateTime]::Now)
	$PublishingOptions.RootItem = Get-Item "master:$MediaLibraryPath"
	$PublishingOptions.Deep = $false
	}

	$publisher = New-Object Sitecore.Publishing.Publisher $PublishingOptions
	$publisher.Publish()
	}
	}

	# Output to file.
	else {
	$target = "$TargetPath$FileName"
	$doc.Save($target)
	}

	$stopWatch.Stop()
	}
	end {
	$report = @{
	TotalItemsProcessed = $script:totalProcessed
	TotalUrls = ($script:totalLocs + $script:totalAlts).ToString() + " ($script:totalLocs urls, $script:totalAlts alternate urls)"
	SkippedUrls = $script:totalSkipped
	ElapsedSeconds = $stopWatch.Elapsed.TotalSeconds
	Parameters = $PsBoundParameters
	WrittenTo = $target
	}
	if (!$error) {
	Write-Host ($report \| Format-Table \| Out-String)
	}
	}
	}