PowerShell实现按条件终止管道的方法

filter Stop-Pipeline
{
param
(
[scriptblock]
$condition = {$true}
)
 
if (& $condition)
{
continue
}
$_
}
 
do {
Get-ChildItem c:\Windows -Recurse -ErrorAction SilentlyContinue |
Stop-Pipeline { ($_.FullName.ToCharArray() -eq '\').Count -gt 3 }
} while ($false)

$start = Get-Date
$MaxSeconds = 10
 
do {
Get-ChildItem c:\Windows -Recurse -ErrorAction SilentlyContinue |
Stop-Pipeline { ((Get-Date) - $start).TotalSeconds -gt $MaxSeconds }
} while ($false)