通过目录递归：子对象显示为空白？

Question

我正在构建一个脚本，用于递归遍历文件树，构建一个对象来表示该树，并以 JSON 格式打印出来。但是，由于某种原因，当我尝试打印子对象时，它们显示为空白。这是我到目前为止的代码：

$dir = "c:\dell"

# Top-level object to hold the directory tree
$obj = @{}

function recurse($dir, [ref]$obj) {

    write-host "recursing into $dir"

    # Object to hold this subdir & children
    $thisobj = @{}

    # List the files & folders in this directory
    $folders = Get-ChildItem $dir | Where-Object { $_.PSIsContainer -eq $true  }
    $files   = Get-ChildItem $dir | Where-Object { $_.PSIsContainer -eq $false }

    #write-host $folders

    # Iterate through the subdirs in this directory
    foreach ($f in $folders) {
        # Recurse into this subdir
        recurse $f.fullname ([ref]$thisobj)
    }

    # Iterate through the files in this directory and add them to 
    foreach ($f in $files) {
        write-host " - adding file to thisobj: $f"
        $thisobj | add-member -MemberType NoteProperty -Name $f -value 10
    }

    # Print out this subtree
    "$dir thisobj: "
    $thisobj | convertto-json -depth 100

    # Add this subtree to parent obj
    $obj | Add-Member -MemberType NoteProperty -name $dir -value $thisobj

    write-host "finished processing $dir"

}

# Initial recursion
recurse $dir ([ref]$obj)

write-host "final obj:"
$obj | ConvertTo-Json -depth 100

这是我试图让最终输出看起来像的样子：

{
    "updatepackage": {
        "log": {
            "DELLMUP.log": 5632
        }
        "New Text Document.txt": 0
    }
    "list.csv": 588
}

Answer 1

我认为，您最好重写recurse 以返回表示目录的对象，而不是修改参数传递的对象：

function recurse {
    param($Dir)

    Get-ChildItem -LiteralPath $Dir |
    ForEach-Object {
        $Obj = [ordered]@{}
    } {
        $Obj.Add($_.PSChildName, $(
            if($_.PSIsContainer) {
                recurse $_.PSPath
            } else {
                $_.Length
            }
        ))
    } {
        $Obj
    }
}

recurse c:\dell | ConvertTo-Json -Depth 100