Sorting the Visual Studio "Add New Item" Dialog with PowerShell

# sort-vsItems
# scott@OdeToCode.com
# Modified by AlexanderGross at gmx dot de
#
# Use at your own risk!
# Script will make a backup of each template just in case.

# vjslib for .zip support.
[System.Reflection.Assembly]::Load("vjslib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a") | out-null

# Get list of VS installed templates.
$installDir = [System.IO.Path]::Combine((gp HKLM:Software\Microsoft\VisualStudio\8.0).InstallDir, "ItemTemplates")
$templateFiles = gci -recurse $installDir | ? {$_.extension -eq ".zip"}

# Append list of custom templates.
$installDir = [System.IO.Path]::Combine((gp "HKCU:\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders").Personal, "Visual Studio 2005\Templates\ItemTemplates")
$templateFiles += gci -recurse $installDir | ? {$_.extension -eq ".zip"}

# Sort all templates by filename.
$templateFiles = $templateFiles | sort name

$i = 1
$count = 0
$tmpDir = new-item ([System.IO.Path]::Combine([System.IO.Path]::GetTempPath(), [System.IO.Path]::GetRandomFileName())) -type directory
$buffer = new-object System.SByte[] (8192)

# Iterate through all template files.
foreach($templateFile in $templateFiles)
{
	write-host "Processing" $templateFile.FullName

	# Extract all files (no methods available to modify zip in place).
	$zip = new-object java.util.zip.ZipFile($templateFile.FullName)
	$entries = $zip.entries()
	while($entries.hasMoreElements())
	{
		$zipEntry = $entries.nextElement()

		# Ensure output directory exists.
		$filename = [System.IO.Path]::Combine($tmpDir.FullName, $zipEntry.getName())

		# $zipEntry.isDirectory() does not work for Microsoft zips (e.g. Web\CSharp\WinFxServiceItemTemplate.zip).
		$directory = [System.IO.Path]::GetDirectoryName($filename)
		if ([System.IO.Directory]::Exists($directory) -ne $true)
		{
			mkdir $directory | out-null

			# In case the zip tells us it's a directory entry, skip the entry to prevent exceptions.
			if ($zipEntry.isDirectory())
			{
				continue
			}
		}

		$in = $zip.getInputStream($zipEntry)
		$out = new-object java.io.FileOutputStream($filename)

		while(($count = $in.read($buffer, 0, $buffer.Count)) -gt 0)
		{
			$out.write($buffer, 0, $count)
		}

		$out.Close()
		$in.Close()
	}
	$zip.Close()

	# Tweak the sort order element.
	$vst = gci -recurse $tmpDir | ? {$_.extension -eq ".vstemplate"}
	if ($vst -eq $null)
	{
		# The zip file does not contain a vstemplate.

		# Clean temporary directory for the next template file.
		del $tmpDir\* -force -recurse
		continue
	}

	$xmlDoc = new-object System.Xml.XmlDocument
	$xmlDoc.Load($vst.FullName)
	if ($xmlDoc.VSTemplate.TemplateData.SortOrder -ne $null)
	{
		# Sort by zip name. Sort order must be a multiple of 10.
		$xmlDoc.VSTemplate.TemplateData.SortOrder = ($i++ * 10).ToString()

		# Sort by item name in Visual Studio.
		# Uncomment this line if you want to let Visual Studio sort by item name.
		# $xmlDoc.VSTemplate.TemplateData.SortOrder = "10"

		$xmlDoc.Save($vst.FullName)
	}

	# Backup existing zip file.
	$backupName = $templateFile.FullName + ".bak"
	if(test-path $backupName)
	{
		# Remove previous backups.
		remove-item $backupName
	}
	move-item $templateFile.FullName $backupName

	# Zip up modified version.
	$zip = new-object java.util.zip.ZipOutputStream(new-object java.io.FileOutputStream($templateFile.FullName))
	$files = gci -recurse $tmpDir
	foreach($file in $files)
	{
		if ($file.Attributes -contains "Directory")
		{
			# Subfolders are created automatically with files residing in subfolders.
			continue
		}

		# Create a file entry.
		# Replacing the last backslash from $tmpDir.FullName is crucial, the zips would work with any other
		# zip editor but Visual Studio doesn't like files with a leading backslash (though one doesn't see
		# it in WinZip).
		$zipEntry = new-object java.util.zip.ZipEntry($file.FullName.Replace($tmpDir.FullName + "\", ""))
		$zip.putNextEntry($zipEntry)
		$in = new-object java.io.FileInputStream($file.FullName)
		while(($count = $in.read($buffer, 0, $buffer.Count)) -gt 0)
		{
			$zip.write($buffer, 0, $count)
		}
		$in.close()
		$zip.closeEntry()

	}
	$zip.close()

	# Clean temporary directory for the next template file.
	del $tmpDir\* -force -recurse
}

del $tmpDir -force -recurse

write-host "Running Visual Studio to refresh templates"
$vstudio = (gp HKLM:Software\Microsoft\VisualStudio\8.0).InstallDir
& $vstudio\devenv /setup