zip/unzip on Powershell (depends on Ionic.Zip.dll)

gistfile1.ps1

function zip ($zipFilePath, $targetDir) {
  # load Ionic.Zip.dll 
  [System.Reflection.Assembly]::LoadFrom(path\to\Ionic.Zip.dll)
  $encoding = [System.Text.Encoding]::GetEncoding("shift_jis") # 日本語のファイルを扱うために必要
  $zipfile =  new-object Ionic.Zip.ZipFile($encoding)

  $zipfile.AddDirectory($targetDir)

  if (!(test-path (split-path $zipFilePath -parent))) {
    mkdir (split-path $zipFilePath -parent)
  }
  write-host "Saving... zip file from $targetDir"
  $zipfile.Save($zipFilePath)
  $zipfile.Dispose()
  write-host "Saved."
}

function unzip ($zipFilePath, $targetDir) {
  # load Ionic.Zip.dll
  [System.Reflection.Assembly]::LoadFrom(path\to\Ionic.Zip.dll)
  $encoding = [System.Text.Encoding]::GetEncoding("shift_jis") # 日本語のファイルを扱うために必要
  $zipfile =  new-object Ionic.Zip.ZipFile($encoding)

  if (!(test-path (split-path $targetDir -parent))) {
    mkdir (split-path $targetDir -parent)
  }
  write-host "Extracting... zip file[$zipFilePath] to $targetDir"
  $zip = [Ionic.Zip.ZIPFile]::Read($zipFilePath, $encoding)
  $zip | %{$_.Extract($targetDir, [Ionic.Zip.ExtractExistingFileAction]::OverWriteSilently)}
  write-host "Extracted."
}