arrays - 匹配数组时Powershell使用通配符

Question

我已经将头撞在墙上几个小时了，正在寻找帮助。为了简化我的问题，我有两个数组，一个数组包含通配符，另一个数组使用这些通配符:

$WildCardArray = @("RED-*.htm", "*.yellow", "BLUE!.txt", "*.green", "*.purple")
$SpelledOutArray = @("RED-123.htm", "456.yellow", "BLUE!.txt",  "789.green", "purple.102", "orange.abc")

我无法让PowerShell识别出这些匹配项。

我的最终目标是得到一个输出，告诉我Purple.102和orange.abc不在$ WildCardArray中。

似乎 super 简单!我尝试过的一些方法:

$WildCardArray = @("RED-*.htm", "*.yellow", "BLUE!.txt", "*.green", "*.purple")
$SpelledOutArray = @("RED-123.htm", "456.yellow", "BLUE!.txt",  "789.green", "purple.102", "orange.abc")
foreach($Item in $SpelledOutArray)
{
$item | where {$wildcardarray -contains $item}
}

结果得到BLUE!.txt，因为这是我的控件，没有通配符。如果将其更改为-notcontains，则将获得除BLUE之外的所有结果。我试过包含，匹配，等于，类似以及它们的所有对立，比较对象，但没有任何效果。我没有错误，只是没有得到预期的结果

我尝试用[a-zA-Z]和其他组合替换“*”，但实际上是替换了它，而不是通配符。我不确定自己在做什么错... PSVersion 5.1 Win 10

有谁知道为什么喜欢/匹配/包含的逻辑不起作用，我能做什么使其起作用？它不必很漂亮，只需要工作即可

Answer 1

banging my head against a wall for hours [..] Seems super simple!

这可能暗示它并非 super 简单。您正在尝试交叉匹配两个列表:红色到红色，黄色，蓝色...。然后蓝色到红色，黄色，蓝色...然后绿色到红色，黄色，蓝色...。30个比较但您只有发生5个循环。

你需要更多。

$WildCardArray = @("RED-*.htm", "*.yellow", "BLUE!.txt", "*.green", "*.purple")
$SpelledOutArray = @("RED-123.htm", "456.yellow", "BLUE!.txt",  "789.green", "purple.102", "orange.abc")

# Loop once over the spelled out items
foreach($Item in $SpelledOutArray)
{
    # for each one, loop over the entire WildCard array and check for matches
    $WildCardMatches = foreach ($WildCard in $WildCardArray)
    { 
        if ($item -like $WildCard) {
            $Item
        }
    }

    # Now see if there were any wildcard matches for this SpelledOut Item or not
    if (-not $WildCardMatches)
    {
        $Item 
    }
}

并且WildCardArray上的内部循环可以成为过滤器，但是您必须过滤数组，而不是像代码那样过滤单个项。

$WildCardArray = @("RED-*.htm", "*.yellow", "BLUE!.txt", "*.green", "*.purple")
$SpelledOutArray = @("RED-123.htm", "456.yellow", "BLUE!.txt",  "789.green", "purple.102", "orange.abc")

foreach($Item in $SpelledOutArray)
{
   $WildCardMatches = $wildcardarray | Where { $item -like $_ }

   if (-not $WildCardMatches)
   {
       $Item 
   }
}

而且我想如果需要的话，您可以将其混入一个不清楚的双向过滤器中。

$WildCardArray = @("RED-*.htm", "*.yellow", "BLUE!.txt", "*.green", "*.purple")
$SpelledOutArray = @("RED-123.htm", "456.yellow", "BLUE!.txt",  "789.green", "purple.102", "orange.abc")

$SpelledOutArray |Where {$item=$_; -not ($WildCardArray |Where {$item -like $_}) }