Public/zip/Compress-With7Zip.ps1
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<#
The MIT License (MIT) Copyright (c) 2015 Objectivity Bespoke Software Specialists Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. #> function Compress-With7Zip { <# .SYNOPSIS Compresses files using 7-zip .PARAMETER PathsToCompress Array of paths to compress. Can use 7zip's wildcards format. .PARAMETER Include List of file / directory to include. Will be passed to -i! switches. .PARAMETER IncludeRecurse Recurse type for Include rules (if set, wildcards will be matched recursively). .PARAMETER Exclude List of file / directory to exclude. Will be passed to -x! switches. .PARAMETER ExcludeRecurse Recurse type for Include rules (if set, wildcards will be matched recursively). .PARAMETER OutputFile Output archive file. .PARAMETER WorkingDirectory Working directory to switch to before running 7-zip. .PARAMETER ArchiveFormat Format of archive. Available values: zip, gzip, bzip2, 7z, xz. Default: zip. .PARAMETER CompressionLevel Compression level to use. Available values: 0 (copy), 1 (fastest), 3, 5, 7, 9 (ultra). .PARAMETER Password PSCredential object that stores the password used to encrypt the archive. .PARAMETER Quiet If true, no output from the command will be passed to the console. .EXAMPLE Compress-With7Zip -PathsToCompress "C:\directory\to\compress" -OutputFile "C:\archive.zip" #> [CmdletBinding()] [OutputType([void])] param( [Parameter(Mandatory=$false)] [string[]] $PathsToCompress, [Parameter(Mandatory=$false)] [string[]] $Include, [Parameter(Mandatory=$false)] [switch] $IncludeRecurse, [Parameter(Mandatory=$false)] [string[]] $Exclude, [Parameter(Mandatory=$false)] [switch] $ExcludeRecurse, [Parameter(Mandatory=$true)] [string] $OutputFile, [Parameter(Mandatory=$false)] [string] $WorkingDirectory, [Parameter(Mandatory=$false)] [ValidateSet($null, 'zip', 'gzip', 'bzip2', '7z', 'xz')] [string] $ArchiveFormat, [Parameter(Mandatory=$false)] [ValidateSet($null, 'copy', 'fast', 'medium', 'good', 'ultra')] [string] $CompressionLevel, [Parameter(Mandatory=$false)] [System.Management.Automation.PSCredential] $Password, [Parameter(Mandatory=$false)] [switch] $Quiet ) if (!$PathsToCompress -and !$Include) { throw "At least one of parameters is required: PathsToCompress or Include." } $cmdLine = New-Object System.Text.StringBuilder $7zipPath = Get-PathTo7Zip -FailIfNotFound if (([uri]$WorkingDirectory).IsUnc) { throw "Working directory '$WorkingDirectory' is an unc path. 7-zip does not support that." } if (!$WorkingDirectory) { $WorkingDirectory = Get-Location | Select-Object -ExpandProperty Path } if (!(Test-Path -Path $WorkingDirectory)) { throw "Working directory '$WorkingDirectory' does not exist." } $WorkingDirectory = (Resolve-Path -LiteralPath $WorkingDirectory).ProviderPath # wrap in quotes if needed $OutputFile = Add-QuotesToPaths $OutputFile [void]($cmdLine.Append("a $OutputFile ")) if (!$PathsToCompress -or ($PathsToCompress.Length -eq 1 -and $PathsToCompress[0] -eq '*' -and $Include)) { #avoid overriding $Include filters with '*' wildcard } elseif ($PathsToCompress.Length -lt 10) { $PathsToCompress = Add-QuotesToPaths $PathsToCompress [void]($cmdLine.Append(($PathsToCompress -join " "))) # Note: we should not use '-r' option as this is not standard recursion - it would instead search all <$Include> in current directory recursively } else { # for many files we need to create a file containing list of files (or we can get 'command line is too long') $fileList = New-Item -Path ([System.IO.Path]::GetTempFileName()) -ItemType File -Value ($PathsToCompress -join "`r`n") -Force [void]($cmdLine.Append("-i@`"$($fileList.FullName)`"")) } if ($ArchiveFormat) { [void]($cmdLine.Append(" -t$ArchiveFormat")) } if ($CompressionLevel) { $compressionSwitch = switch ($CompressionLevel) { "copy" { "0" } "fast" { "3" } "medium" { "5" } "good" { "7" } "ultra" { "9" } } [void]($cmdLine.Append(" -mx$compressionSwitch")) } if ($Password) { [void]($cmdLine.Append(" -p$($Password.GetNetworkCredential().Password)")) } if ($Include) { foreach ($wildcard in $Include) { if ($IncludeRecurse) { [void]($cmdLine.Append(" -ir!$wildcard")) } else { [void]($cmdLine.Append(" -i!$wildcard")) } } } if ($Exclude) { foreach ($wildcard in $Exclude) { if ($ExcludeRecurse) { [void]($cmdLine.Append(" -xr!$wildcard")) } else { [void]($cmdLine.Append(" -x!$wildcard")) } } } try { $includes = '(None)' if($Include -and $Include.Length -gt 0) { $includes = $Include -join "," } Write-Log -_Debug "Invoking 7zip at directory '$WorkingDirectory' ($($PathsToCompress.Count) path(s)) including wildcards: $includes." [void](Start-ExternalProcess -Command $7zipPath -ArgumentList ($cmdLine.ToString()) -WorkingDirectory $WorkingDirectory -Quiet:$Quiet) } finally { if ($fileList -and (Test-Path -LiteralPath $fileList)) { Remove-Item -LiteralPath $fileList -Force } } } |