loops - PowerShell:打破嵌套循环

Question

应该有 break PowerShell 中的命令，可以通过分配标签退出嵌套循环。只是它不起作用。这是我的代码:

$timestampServers = @(
    "http://timestamp.verisign.com/scripts/timstamp.dll",
    "http://timestamp.comodoca.com/authenticode",
    "http://timestamp.globalsign.com/scripts/timstamp.dll",
    "http://www.startssl.com/timestamp"
)

:outer for ($retry = 2; $retry -gt 0; $retry--)
{
    Write-Host retry $retry
    foreach ($timestampServer in $timestampServers)
    {
        Write-Host timestampServer $timestampServer
        & $signtoolBin sign /f $keyFile /p "$password" /t $timestampServer $file
        if ($?)
        {
            Write-Host OK
            break :outer
        }
    }
}
if ($retry -eq 0)
{
    WaitError "Digitally signing failed"
    exit 1
}

它打印以下内容:

retry 2
timestampServer http://timestamp.verisign.com/scripts/timstamp.dll
Done Adding Additional Store
Successfully signed and timestamped: C:\myfile.dll
OK
retry 1
timestampServer http://timestamp.verisign.com/scripts/timstamp.dll
Done Adding Additional Store
Successfully signed and timestamped: C:\myfile.dll
OK

ERROR: Digitally signing failed

我做错了什么？

请给我转到和标签好吗？

使用 Windows 7，我猜是 PS 2.0。这个脚本至少应该在 PS 2 上运行。

Answer 1

使用 break 时不要添加冒号带有循环标签。这一行:

break :outer

应该这样写:

break outer

为了进一步演示，请考虑这个简单的脚本:

:loop while ($true)
{
    while ($true)
    {
        break :loop
    }
}

执行时，它将永远运行而不会中断。然而这个脚本:

:loop while ($true)
{
    while ($true)
    {
        break loop
    }
}

退出，因为我改变了 break :loop至 break loop .