前回、Powershell のZip処理をDSCと比較してみるでPowerShellによる zip処理に、ZipFileクラスを使う例を紹介しました。
牟田口先生から以下のご指摘を受けたので修正版を公開します。
@guitarrapc_tech ぎたぱそ氏ー。これsourceにサブディレクトリがあると圧縮に失敗するでござるよ。ZipFile.CreateFromDirectoryを使えばいいのかなあ。
— 牟田口大介 (@mutaguchi) October 7, 2013
目次
コード
GitHubと、修正後のコード全体をさらしておきます。
GitHub
Zip圧縮処理
function New-ZipCompression{
[CmdletBinding()]
param(
[parameter(
mandatory,
position = 0,
valuefrompipeline,
valuefrompipelinebypropertyname)]
[string]
$source,
[parameter(
mandatory = 0,
position = 1,
valuefrompipeline,
valuefrompipelinebypropertyname)]
[string]
$destination,
[parameter(
mandatory = 0,
position = 2)]
[switch]
$quiet,
[parameter(
mandatory = 0,
position = 3)]
[switch]
$force
)
try
{
Add-Type -AssemblyName "System.IO.Compression.FileSystem"
}
catch
{
}
# check file is directory
$file = Get-Item -Path $source
# set zip extension
$zipExtension = ".zip"
# set desktop as destination path if it null
if ([string]::IsNullOrWhiteSpace($destination))
{
if ($file.Mode -like "d*")
{
$destination = (Join-Path ([System.Environment]::GetFolderPath([Environment+SpecialFolder]::Desktop)) (([System.IO.Path]::GetFileNameWithoutExtension($source)) + $zipExtension))
}
else
{
$destination = (Join-Path ([System.Environment]::GetFolderPath([Environment+SpecialFolder]::Desktop)) (([System.IO.Path]::GetFileNameWithoutExtension(($file | select -First 1 -ExpandProperty fullname))) + $zipExtension))
}
}
# check destination is input as .zip
if (-not($destination.EndsWith($zipExtension)))
{
throw ("destination parameter value [{0}] not end with extension {1}" -f $destination, $zipExtension)
}
# check destination is already exist or not
if (Test-Path $destination)
{
Remove-Item -Path $destination -Confirm
}
# compressionLevel
$compressionLevel = [System.IO.Compression.CompressionLevel]::Optimal
# check file mode for source
Write-Verbose ("file.mode = {0}" -f $file.Mode)
if ($file.Mode -like "d*") # Directory should be d---
{
try # create zip from directory
{
# force output zip file to new destination path, avoiding destination zip name conflict.
if ($force)
{
# check destination is already exist, CreateFromDirectory will fail with same name of destination file.
if (Test-Path $destination)
{
# show warning for same destination exist.
Write-Verbose ("Detected destination name {0} is already exist. Force trying output to new destination zip name." -f $destination)
# get current destination information
$destinationRoot = [System.IO.Path]::GetDirectoryName($destination)
$destinationfile = [System.IO.Path]::GetFileNameWithoutExtension($destination)
$destinationExtension = [System.IO.Path]::GetExtension($destination)
# renew destination name with (2)...(x) until no more same name catch.
$count = 2
$destination = Join-Path $destinationRoot ($destinationfile + "(" + $count + ")" + $destinationExtension)
while (Test-Path $destination)
{
++$count
$destination = Join-Path $destinationRoot ($destinationfile + "(" + $count + ")" + $destinationExtension)
}
# show warning as destination name had been changed due to escape error.
Write-Verbose ("Deistination name change to new name {0}" -f $destination)
}
}
# include BaseDirectory
$includeBaseDirectory = $true
Write-Verbose ("destination = {0}" -f $destination)
Write-Verbose ("file.fullname = {0}" -f $file.FullName)
Write-Verbose ("compressionLevel = {0}" -f $compressionLevel)
Write-Verbose ("includeBaseDirectory = {0}" -f $includeBaseDirectory)
if ($quiet)
{
Write-Verbose ("zipping up folder {0} to {1}" -f $file.FullName,$destination)
[System.IO.Compression.ZipFile]::CreateFromDirectory($file.fullname,$destination,$compressionLevel,$includeBaseDirectory) > $null
$?
}
else
{
Write-Verbose ("zipping up folder {0} to {1}" -f $file.FullName,$destination)
[System.IO.Compression.ZipFile]::CreateFromDirectory($file.fullname,$destination,$compressionLevel,$includeBaseDirectory)
Get-Item $destination
}
}
catch
{
Write-Error $_
$?
}
}
else
{
try # create zip from files
{
# create zip to add
$destzip = [System.IO.Compression.Zipfile]::Open($destination,"Update")
# get items
$files = Get-ChildItem -Path $source
foreach ($file in $files)
{
$file2 = $file.name
Write-Verbose ("destzip = {0}" -f $destzip)
Write-Verbose ("file.fullname = {0}" -f $file.FullName)
Write-Verbose ("file2 = {0}" -f $file2)
Write-Verbose ("compressionLevel = {0}" -f $compressionLevel)
if ($quiet)
{
Write-Verbose ("zipping up files {0} to {1}" -f $file.FullName,$destzip)
[System.IO.Compression.ZipFileExtensions]::CreateEntryFromFile($destzip,$file.fullname,$file2,$compressionLevel) > $null
$?
}
else
{
Write-Verbose ("zipping up files {0} to {1}" -f $file.FullName,$destzip)
[System.IO.Compression.ZipFileExtensions]::CreateEntryFromFile($destzip,$file.fullname,$file2,$compressionLevel)
}
}
}
catch
{
Write-Error $_
$?
}
finally
{
# dispose opened zip
$destzip.Dispose()
}
}
}
Zip解凍処理
function New-ZipExtract{
[CmdletBinding()]
param(
[parameter(
mandatory,
position = 0,
valuefrompipeline,
valuefrompipelinebypropertyname)]
[string]
$source,
[parameter(
mandatory = 0,
position = 1,
valuefrompipeline,
valuefrompipelinebypropertyname)]
[string]
$destination,
[parameter(
mandatory = 0,
position = 2)]
[switch]
$quiet,
[parameter(
mandatory = 0,
position = 3)]
[switch]
$force
)
try
{
Add-Type -AssemblyName "System.IO.Compression.FileSystem"
}
catch
{
}
$zipExtension = ".zip"
# check source is input as .zip
if (-not($source.EndsWith($zipExtension)))
{
throw ("source parameter value [{0}] not end with extension {1}" -f $source, $zipExtension)
}
# set desktop as destination path if it null
if ([string]::IsNullOrWhiteSpace($destination))
{
$destination = (Join-Path ([System.Environment]::GetFolderPath([Environment+SpecialFolder]::Desktop)) (([System.IO.Path]::GetFileNameWithoutExtension($source))))
}
# check destination is already exist or not
if (Test-Path $destination)
{
Remove-Item -Path $destination -Recurse -Confirm
}
try
{
# force output zip file to new destination path, avoiding destination zip name conflict.
if ($force)
{
# check destination is already exist, CreateFromDirectory will fail with same name of destination file.
if (Test-Path $destination)
{
# show warning for same destination exist.
Write-Verbose ("Detected destination name {0} is already exist. Force trying output to new destination zip name." -f $destination)
# get current destination information
$destinationRoot = [System.IO.Path]::GetDirectoryName($destination)
$destinationfile = [System.IO.Path]::GetFileName($destination)
# renew destination name with (2)...(x) until no more same name catch.
$count = 2
$destination = Join-Path $destinationRoot ($destinationfile + "(" + $count + ")")
while (Test-Path $destination)
{
++$count
$destination = Join-Path $destinationRoot ($destinationfile + "(" + $count + ")")
}
# show warning as destination name had been changed due to escape error.
Write-Verbose ("Deistination name change to new name {0}" -f $destination)
}
}
# create source zip and complression
$sourcezip = [System.IO.Compression.Zipfile]::Open($source,"Update")
$compressionLevel = [System.IO.Compression.CompressionLevel]::Optimal
Write-Verbose ("sourcezip = {0}" -f $sourcezip)
Write-Verbose ("destination = {0}" -f $destination)
if ($quiet)
{
[System.IO.Compression.ZipFileExtensions]::ExtractToDirectory($sourcezip,$destination) > $null
$?
}
else
{
[System.IO.Compression.ZipFileExtensions]::ExtractToDirectory($sourcezip,$destination)
}
$sourcezip.Dispose()
}
catch
{
Write-Error $_
}
finally
{
$sourcezip.Dispose()
}
}
利用方法
以前と変わっていませんが、いくつか追加しています。
- パラメータとして、
-forceスイッチを付け加えています - 単独ファイルだけでなく、ワイルドカード(*)での複数ファイル指定、サブディレクトリを含むフォルダにも対応しています
- 圧縮、解凍ともに
-destinationパラメータは必須ではないようにし、指定されなかった場合は デスクトップに生成するようにしています
サンプル
圧縮例です。
# Compres Sample New-ZipCompression -source D:\test -destination d:\hoge.zip # 出力結果が true/falseのみとなる New-ZipCompression -source D:\test -destination d:\hoge.zip -quiet # デスクトップに、sourceに指定したフォルダ名でzipを生成 New-ZipCompression -source D:\test # デスクトップに、sourceに指定したファイルを名称としてzipを生成 New-ZipCompression -source D:\test\hoge.ps1 # デスクトップに、sourceに指定したファイルの先頭を名称としてzipを生成 New-ZipCompression -source D:\test\*.ps1 # destinationが重複していた場合、削除するか聞いてきます(Nで消さないと例外) New-ZipCompression -source D:\test\*.ps1 # -forceを付けることで、たとえdestinationが重複していた場合に削除しなくても、自動的に連番を付けてzip圧縮します。 New-ZipCompression -source D:\test\*.ps1 -force
解凍も同様に逆操作が可能です。
# Extract Sample New-ZipExtract -source d:\hoge.zip -destination d:\hogehoge # 出力結果が true/falseのみとなる New-ZipExtract -source d:\hoge.zip -destination d:\hogehoge -quiet # デスクトップに、sourceに指定したzip名でフォルダを生成 New-ZipExtract -source D:\hoge.zip # destinationが重複していた場合、削除するか聞いてきます(Nで消さないと例外) New-ZipExtract -source D:\test\hoge.zip # -forceを付けることで、たとえdestinationが重複していた場合に削除しなくても、自動的に連番を付けてzip圧縮します。 New-ZipExtract -source D:\test\hoge.ps1 -force
まとめ
ずいぶん量が増えました (汗
とりあえず普通に使えそうなのですが、気になる点、おかしな点があればご指摘いただけると....!
