インモビインモビ

# Filename: UnpackAll.ps1
# ------------ 設定 ------------
$sourceFolder      = 'C:\Users\\Desktop\ZIP'
$destinationFolder = 'C:\Users\\Desktop\open'

# ------------ 準備 ------------
Add-Type -AssemblyName System.IO.Compression.FileSystem
$shiftJIS = [System.Text.Encoding]::GetEncoding(932)

if (-not (Test-Path $destinationFolder)) {
    New-Item -ItemType Directory -Path $destinationFolder | Out-Null
}

# ------------ 平坦展開用関数 ------------
function Expand-ZipFlatten {
    param($zipPath, $outDir)

    Write-Host "展開 (平坦／SJIS)：" $zipPath

    # 一時フォルダを作成
    $temp = Join-Path $env:TEMP ([GUID]::NewGuid().ToString())
    New-Item -ItemType Directory -Path $temp | Out-Null

    try {
        # SJIS 指定で全展開
        [System.IO.Compression.ZipFile]::ExtractToDirectory($zipPath, $temp, $shiftJIS)

        # 一時フォルダ内のすべてのファイルを平坦化コピー
        Get-ChildItem -Path $temp -Recurse -File | ForEach-Object {
            $target = Join-Path $outDir $_.Name
            Copy-Item -LiteralPath $_.FullName -Destination $target -Force -ErrorAction SilentlyContinue
        }
    }
    finally {
        # 一時フォルダを丸ごと削除
        Remove-Item -LiteralPath $temp -Recurse -Force
    }
}

# ------------ メイン処理 ------------

# 1) 元フォルダ内の ZIP を平坦展開＋削除
Get-ChildItem -Path $sourceFolder -Recurse -Filter '*.zip' | ForEach-Object {
    Expand-ZipFlatten $_.FullName $destinationFolder
    Remove-Item -LiteralPath $_.FullName -Force
}

# 2) 元フォルダ内の非ZIPをまとめコピー
Get-ChildItem -Path $sourceFolder -Recurse -File |
    Where-Object { $_.Extension -ne '.zip' } |
    Copy-Item -Destination $destinationFolder -Force

# 3) ネストZIPにも同じ処理をループ
do {
    $nested = Get-ChildItem -Path $destinationFolder -Filter '*.zip'
    if ($nested.Count -gt 0) {
        $nested | ForEach-Object {
            Expand-ZipFlatten $_.FullName $destinationFolder
            Remove-Item -LiteralPath $_.FullName -Force
        }
    }
} while ($nested.Count -gt 0)

Write-Host "▶ すべてのファイルを '$destinationFolder' に平坦にまとめました！"