From f831b3106ef36c3ad3792f9ee65c446669a17148 Mon Sep 17 00:00:00 2001
From: Christophe CREMON <chris@uxone.net>
Date: Fri, 6 Jul 2012 11:44:08 +0200
Subject: [PATCH] PowerFileWatcher

---
 PowerFileWatcher/PowerFileWatcher.psm1 | 52 ++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 PowerFileWatcher/PowerFileWatcher.psm1

diff --git a/PowerFileWatcher/PowerFileWatcher.psm1 b/PowerFileWatcher/PowerFileWatcher.psm1
new file mode 100644
index 0000000..a87a907
--- /dev/null
+++ b/PowerFileWatcher/PowerFileWatcher.psm1
@@ -0,0 +1,52 @@
+# 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
\ No newline at end of file