Pretty folder tree generator for Windows PowerShell.

show-tree.ps1

<#
    Generates a clean, Unicode-formatted directory tree starting
    from the current folder and writes it to a text file named
    <foldername>_structure.txt.

    You can specify file extensions to exclude (e.g., .txt, .log, .tmp).

    Usage:
        1. Save as show-tree.ps1
        2. Open PowerShell in any folder
        3. Run:
            powershell -ExecutionPolicy Bypass -File .\show-tree.ps1
#>

function show-tree {
    param (
        [string]$path = ".",
        [string]$prefix = "",
        [string[]]$excludeExtensions = @()
    )

    # Get subdirectories
    $dirs = Get-ChildItem -LiteralPath $path -Directory -ErrorAction SilentlyContinue

    # Get files and filter out excluded extensions
    $files = Get-ChildItem -LiteralPath $path -File -ErrorAction SilentlyContinue | Where-Object {
        $ext = [System.IO.Path]::GetExtension($_.Name)
        $excludeExtensions -notcontains $ext
    }

    # Combine and sort
    $items = $dirs + $files | Sort-Object PSIsContainer, Name

    # Print the structure recursively
    for ($i = 0; $i -lt $items.Count; $i++) {
        $item = $items[$i]
        $isLast = ($i -eq $items.Count - 1)
        $marker = if ($isLast) { "└── " } else { "├── " }
        Write-Output "$prefix$marker$($item.Name)"
        if ($item.PSIsContainer) {
            $nextPrefix = if ($isLast) { "$prefix    " } else { "$prefix│   " }
            show-tree -path $item.FullName -prefix $nextPrefix -excludeExtensions $excludeExtensions
        }
    }
}

# === User configuration ===
$root = Split-Path (Get-Location) -Leaf
$exclude = @(".txt", ".log", ".tmp")  # Add extensions you want to skip here
$outputFile = "${root}_structure.txt"

# === Execution ===
Write-Output $root | Out-File $outputFile -Encoding UTF8
show-tree -excludeExtensions $exclude | Out-File $outputFile -Append -Encoding UTF8

Write-Host "Folder structure saved to '$outputFile'"