# Set your svn path
$Svn = "svn.exe"

trap {
		Write-Error "$_.Exception.GetType().FullName + $_.Exception.Message	"
}

if ($args.length -ne 1) {
	throw "Invalid arguments"
}

$source_path = $args[0]
$local_info = & $Svn info $source_path
if ($LastExitCode -ne 0) {
	throw "Local svn info failed"
}
$local_revision = $local_info | %{ if ($_.startsWith("Revision")) { Write-Output $_ } } | %{ Write-Output $_.substring($_.indexOf(": ")+2) }
$url = $local_info | %{ if ($_.startsWith("Repository Root")) { Write-Output $_ } } | %{ Write-Output $_.substring($_.indexOf(": ")+2) }
$remote_info = & $Svn info $url
if ($LastExitCode -ne 0) {
	throw "Remote svn info failed"
}
$remote_revision = $remote_info | %{ if ($_.startsWith("Revision")) { Write-Output $_ } } | %{ Write-Output $_.substring($_.indexOf(": ")+2) }

if ($local_revision -ne $remote_revision)
{
	svn update $source_path
}
else
{
	Write-Host "Up to date"
}