PowerFileWatcher

PowerFileWatcher/PowerFileWatcher.psm1

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+# File Watcher PowerShell Module
+# http://powershell.codeplex.com
+
+Function Start-FileWatcher
+{
+	param ( [string] $FileName = $(throw "Please specify a File Name"),
+	[int] $TimeOut = $(throw "Please specify a TimeOut in Seconds"),
+	[string] $ChangeType = $(throw "Please specify a Change Type [ Created | Deleted | Changed | Renamed ]"),
+	[switch] $IncludeSubDirectories )
+
+	$Loop = $true
+	$TimeOut = $TimeOut * 1000	
+	$ChangeTypes = @( "Created", "Deleted", "Changed", "Renamed" )
+
+	if ( $ChangeTypes -notcontains $ChangeType )
+	{
+		throw "Please specify a Change Type [ Created | Deleted | Changed | Renamed ]"
+	}
+
+	while ( $Loop -eq $true )
+	{
+		$FileWatcher = New-Object System.IO.FileSystemWatcher
+		$FileWatcher.Path = Split-Path $FileName
+		$FileWatcher.Filter = Split-Path -Leaf $FileName
+		$FileWatcher.EnableRaisingEvents = $true
+		if ( $IncludeSubDirectories )
+		{
+			$FileWatcher.IncludeSubdirectories = $true
+		}
+		$FileWatcherResult = New-Object System.IO.WaitForChangedResult
+		$FileWatcherResult = $FileWatcher.WaitForChanged($ChangeType,$TimeOut)
+		if ( $FileWatcherResult.ChangeType -eq $ChangeType )
+		{
+			$RootName = $FileWatcher.Path
+			$TreeName = $FileWatcherResult.Name
+			$FullFileName = "$RootName\$TreeName"
+			if ( $RootName -match "\\$" )
+			{
+				$FullFileName = "$RootName$TreeName"
+			}
+			return $FullFileName
+			$Loop = $false
+		}
+		if ( $FileWatcherResult.TimedOut -eq $true )
+		{
+			return $false
+			$Loop = $false
+		}
+	}
+}
+
+Export-ModuleMember -Function Start-FileWatcher