比较对象 - 单独的侧栏 [英] Compare-Object - Separate side columns

问题描述

是否可以在两列中显示 PowerShell Compare-Object 的结果，以显示引用与不同对象的差异?

Is it possible to display the results of a PowerShell Compare-Object in two columns showing the differences of reference vs difference objects?

例如使用我当前的 cmdline:

For example using my current cmdline:

Compare-Object $Base $Test

给出:

InputObject     SideIndicator
987654          =>
555555          <=
123456          <=

实际上这个列表很长.为了更容易读取数据，可以像这样格式化数据:

In reality the list is rather long. For easier data reading is it possible to format the data like so:

Base    Test
555555  987654
123456

所以每列显示该对象中存在哪些元素与其他元素.

So each column shows which elements exist in that object vs the other.

对于奖励积分，像这样在列标题中有一个计数会很棒:

For bonus points it would be fantastic to have a count in the column header like so:

Base(2)  Test(1)
555555   987654
123456

推荐答案

可能吗?当然.可行的?没那么多.PowerShell 并不是真正为创建这种表格输出而构建的.您可以做的是通过输入文件将哈希表中的差异收集为嵌套数组:

Possible? Sure. Feasible? Not so much. PowerShell wasn't really built for creating this kind of tabular output. What you can do is collect the differences in a hashtable as nested arrays by input file:

$ht = @{}
Compare-Object $Base $Test | ForEach-Object {
  $value = $_.InputObject
  switch ($_.SideIndicator) {
    '=>' { $ht['Test'] += @($value) }
    '<=' { $ht['Base'] += @($value) }
  }
}

然后转置哈希表:

$cnt  = $ht.Values |
        ForEach-Object { $_.Count } |
        Sort-Object |
        Select-Object -Last 1
$keys = $ht.Keys | Sort-Object

0..($cnt-1) | ForEach-Object {
  $props = [ordered]@{}
  foreach ($key in $keys) {
    $props[$key] = $ht[$key][$_]
  }
  New-Object -Type PSObject -Property $props
} | Format-Table -AutoSize

要在标题名称中包含项目计数，请将 $props[$key] 更改为 $props["$key($($ht[$key].Count))"].

To include the item count in the header name change $props[$key] to $props["$key($($ht[$key].Count))"].

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