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| # Compare-Directory.ps1 | |
| # Compare files in one or more directories and return file difference results | |
| # Victor Vogelpoel <victor@victorvogelpoel.nl> | |
| # Sept 2013 | |
| # | |
| # Disclaimer | |
| # This script is provided AS IS without warranty of any kind. I disclaim all implied warranties including, without limitation, | |
| # any implied warranties of merchantability or of fitness for a particular purpose. The entire risk arising out of the use or | |
| # performance of the sample scripts and documentation remains with you. In no event shall I be liable for any damages whatsoever | |
| # (including, without limitation, damages for loss of business profits, business interruption, loss of business information, | |
| # or other pecuniary loss) arising out of the use of or inability to use the script or documentation. | |
| # Compare-Directory -ReferenceDirectory "C:\Compare-Directory\FrontEnd1-Site" -DifferenceDirectory "C:\Compare-Directory\FrontEnd2-Site" | |
| function Compare-Directory | |
| { | |
| [CmdletBinding()] | |
| param | |
| ( | |
| [Parameter(Mandatory=$true, position=0, ValueFromPipelineByPropertyName=$true, HelpMessage="The reference directory to compare one or more difference directories to.")] | |
| [System.IO.DirectoryInfo]$ReferenceDirectory, | |
| [Parameter(Mandatory=$true, position=1, ValueFromPipeline=$true, ValueFromPipelineByPropertyName=$true, HelpMessage="One or more directories to compare to the reference directory.")] | |
| [System.IO.DirectoryInfo[]]$DifferenceDirectory, | |
| [Parameter(Mandatory=$false, ValueFromPipelineByPropertyName=$true, HelpMessage="Recurse the directories")] | |
| [switch]$Recurse, | |
| [Parameter(Mandatory=$false, ValueFromPipelineByPropertyName=$true, HelpMessage="Files to exclude from the comparison")] | |
| [String[]]$ExcludeFile, | |
| [Parameter(Mandatory=$false, ValueFromPipelineByPropertyName=$true, HelpMessage="Directories to exclude from the comparison")] | |
| [String[]]$ExcludeDirectory, | |
| [Parameter(Mandatory=$false, ValueFromPipelineByPropertyName=$true, HelpMessage="Displays only the characteristics of compared objects that are equal.")] | |
| [switch]$ExcludeDifferent, | |
| [Parameter(Mandatory=$false, ValueFromPipelineByPropertyName=$true, HelpMessage="Displays characteristics of files that are equal. By default, only characteristics that differ between the reference and difference files are displayed.")] | |
| [switch]$IncludeEqual, | |
| [Parameter(Mandatory=$false, ValueFromPipelineByPropertyName=$true, HelpMessage="Passes the objects that differed to the pipeline.")] | |
| [switch]$PassThru | |
| ) | |
| begin | |
| { | |
| function Get-MD5 | |
| { | |
| [CmdletBinding(SupportsShouldProcess=$false)] | |
| param | |
| ( | |
| [Parameter(Mandatory=$true, ValueFromPipeline=$true, ValueFromPipelineByPropertyName=$true, HelpMessage="file(s) to create hash for")] | |
| [Alias("File", "Path", "PSPath", "String")] | |
| [ValidateNotNull()] | |
| $InputObject | |
| ) | |
| begin | |
| { | |
| $cryptoServiceProvider = [System.Security.Cryptography.MD5CryptoServiceProvider] | |
| $hashAlgorithm = new-object $cryptoServiceProvider | |
| } | |
| process | |
| { | |
| $hashByteArray = "" | |
| $item = Get-Item $InputObject -ErrorAction SilentlyContinue | |
| if ($item -is [System.IO.DirectoryInfo]) { throw "Cannot create hash for directory" } | |
| if ($item) { $InputObject = $item } | |
| if ($InputObject -is [System.IO.FileInfo]) | |
| { | |
| $stream = $null; | |
| $hashByteArray = $null | |
| try | |
| { | |
| $stream = $InputObject.OpenRead(); | |
| $hashByteArray = $hashAlgorithm.ComputeHash($stream); | |
| } | |
| finally | |
| { | |
| if ($stream -ne $null) | |
| { | |
| $stream.Close(); | |
| } | |
| } | |
| } | |
| else | |
| { | |
| $utf8 = new-object -TypeName "System.Text.UTF8Encoding" | |
| $hashByteArray = $hashAlgorithm.ComputeHash($utf8.GetBytes($InputObject.ToString())); | |
| } | |
| Write-Output ([BitConverter]::ToString($hashByteArray)).Replace("-","") | |
| } | |
| } | |
| function Get-Files | |
| { | |
| [CmdletBinding(SupportsShouldProcess=$false)] | |
| param | |
| ( | |
| [string]$DirectoryPath, | |
| [String[]]$ExcludeFile, | |
| [String[]]$ExcludeDirectory, | |
| [switch]$Recurse | |
| ) | |
| $relativeBasenameIndex = $DirectoryPath.ToString().Length | |
| # Get the files from the first deploypath | |
| # and ADD the MD5 hash for the file as a property | |
| # and ADD a filepath relative to the deploypath as a property | |
| Get-ChildItem -Path $DirectoryPath -Exclude $ExcludeFile -Recurse:$Recurse | foreach { | |
| $hash = "" | |
| if (!$_.PSIsContainer) { $hash = Get-MD5 $_ } | |
| # Added two new properties to the DirectoryInfo/FileInfo objects | |
| $item = $_ | | |
| Add-Member -Name "MD5Hash" -MemberType NoteProperty -Value $hash -PassThru | | |
| Add-Member -Name "RelativeBaseName" -MemberType NoteProperty -Value ($_.FullName.Substring($relativeBasenameIndex)) -PassThru | |
| # Test for directories and files that need to be excluded because of ExcludeDirectory | |
| if ($item.PSIsContainer) { $item.RelativeBaseName += "\" } | |
| if ($ExcludeDirectory | where { $item.RelativeBaseName -like "\$_\*" }) | |
| { | |
| Write-Verbose "Ignore item `"$($item.Fullname)`"" | |
| } | |
| else | |
| { | |
| Write-Verbose "Adding `"$($item.Fullname)`" to result set" | |
| Write-Output $item | |
| } | |
| } | |
| } | |
| $referenceDirectoryFiles = Get-Files -DirectoryPath $referenceDirectory -ExcludeFile $ExcludeFile -ExcludeDirectory $ExcludeDirectory -Recurse:$Recurse | |
| } | |
| process | |
| { | |
| if ($DifferenceDirectory -and $referenceDirectoryFiles) | |
| { | |
| foreach($nextPath in $DifferenceDirectory) | |
| { | |
| $nextDifferenceFiles = Get-Files -DirectoryPath $nextpath -ExcludeFile $ExcludeFile -ExcludeDirectory $ExcludeDirectory -Recurse:$Recurse | |
| ################################################### | |
| # Compare the contents of the two file/directory arrays and return the results | |
| $results = @(Compare-Object -ReferenceObject $referenceDirectoryFiles -DifferenceObject $nextDifferenceFiles -ExcludeDifferent:$ExcludeDifferent -IncludeEqual:$IncludeEqual -PassThru:$PassThru -Property RelativeBaseName, MD5Hash) | |
| if (!$PassThru) | |
| { | |
| foreach ($result in $results) | |
| { | |
| $path = $ReferenceDirectory | |
| $pathFiles = $referenceDirectoryFiles | |
| if ($result.SideIndicator -eq "=>") | |
| { | |
| $path = $nextPath | |
| $pathFiles = $nextDifferenceFiles | |
| } | |
| # Find the original item in the files array | |
| $itemPath = (Join-Path $path $result.RelativeBaseName).ToString().TrimEnd('\') | |
| $item = $pathFiles | where { $_.fullName -eq $itemPath } | |
| $result | Add-Member -Name "Item" -MemberType NoteProperty -Value $item | |
| } | |
| } | |
| Write-Output $results | |
| } | |
| } | |
| } | |
| <# | |
| .SYNOPSIS | |
| Compares a reference directory with one or more difference directories. | |
| .DESCRIPTION | |
| Compare-Directory compares a reference directory with one ore more difference | |
| directories. Files and directories are compared both on filename and contents | |
| using a MD5hash. | |
| Internally, Compare-Object is used to compare the directories. The behavior | |
| and results of Compare-Directory is similar to Compare-Object. | |
| .PARAMETER ReferenceDirectory | |
| The reference directory to compare one or more difference directories to. | |
| .PARAMETER DifferenceDirectory | |
| One or more directories to compare to the reference directory. | |
| .PARAMETER Recurse | |
| Include subdirectories in the comparison. | |
| .PARAMETER ExcludeFile | |
| File names to exclude from the comparison. | |
| .PARAMETER ExcludeDirectory | |
| Directory names to exclude from the comparison. Directory names are | |
| relative to the Reference of Difference Directory path | |
| .PARAMETER ExcludeDifferent | |
| Displays only the characteristics of compared files that are equal. | |
| .PARAMETER IncludeEqual | |
| Displays characteristics of files that are equal. By default, only | |
| characteristics that differ between the reference and difference files | |
| are displayed. | |
| .PARAMETER PassThru | |
| Passes the objects that differed to the pipeline. By default, this | |
| cmdlet does not generate any output. | |
| .EXAMPLE | |
| Compare-Directory -reference "D:\TEMP\CompareTest\path1" -difference "D:\TEMP\CompareTest\path2" -ExcludeFile "web.config" -recurse | |
| Compares directories "D:\TEMP\CompareTest\path1" and "D:\TEMP\CompareTest\path2" recursively, excluding "web.config" | |
| Only differences are shown. Results: | |
| RelativeBaseName MD5Hash SideIndicator Item | |
| ---------------- ------- ------------- ---- | |
| bin\site.dll 87A1E6006C2655252042F16CBD7FB41B => D:\TEMP\CompareTest\path2\bin\site.dll | |
| index.html 02BB8A33E1094E547CA41B9E171A267B => D:\TEMP\CompareTest\path2\index.html | |
| index.html 20EE266D1B23BCA649FEC8385E5DA09D <= D:\TEMP\CompareTest\path1\index.html | |
| web_2.config 5E6B13B107ED7A921AEBF17F4F8FE7AF <= D:\TEMP\CompareTest\path1\web_2.config | |
| bin\site.dll 87A1E6006C2655252042F16CBD7FB41B => D:\TEMP\CompareTest\path2\bin\site.dll | |
| index.html 02BB8A33E1094E547CA41B9E171A267B => D:\TEMP\CompareTest\path2\index.html | |
| index.html 20EE266D1B23BCA649FEC8385E5DA09D <= D:\TEMP\CompareTest\path1\index.html | |
| web_2.config 5E6B13B107ED7A921AEBF17F4F8FE7AF <= D:\TEMP\CompareTest\path1\web_2.config | |
| .EXAMPLE | |
| Compare-Directory -reference "D:\TEMP\CompareTest\path1" -difference "D:\TEMP\CompareTest\path2" -ExcludeFile "web.config" -recurse -IncludeEqual | |
| Compares directories "D:\TEMP\CompareTest\path1" and "D:\TEMP\CompareTest\path2" recursively, excluding "web.config". | |
| Results include the items that are equal: | |
| RelativeBaseName MD5Hash SideIndicator Item | |
| ---------------- ------- ------------- ---- | |
| bin == D:\TEMP\CompareTest\path1\bin | |
| bin\site2.dll 98B68D681A8D40FA943D90588E94D1A9 == D:\TEMP\CompareTest\path1\bin\site2.dll | |
| bin\site3.dll 9408C4B29F82260CBBA528342CBAA80F == D:\TEMP\CompareTest\path1\bin\site3.dll | |
| bin\site4.dll 0616E1FBE12D468F611F07768D70C2EE == D:\TEMP\CompareTest\path1\bin\site4.dll | |
| ... | |
| bin\site8.dll 87A1E6006C2655252042F16CBD7FB41B => D:\TEMP\CompareTest\path2\bin\site8.dll | |
| index.html 02BB8A33E1094E547CA41B9E171A267B => D:\TEMP\CompareTest\path2\index.html | |
| index.html 20EE266D1B23BCA649FEC8385E5DA09D <= D:\TEMP\CompareTest\path1\index.html | |
| web_2.config 5E6B13B107ED7A921AEBF17F4F8FE7AF <= D:\TEMP\CompareTest\path1\web_2.config | |
| .EXAMPLE | |
| Compare-Directory -reference "D:\TEMP\CompareTest\path1" -difference "D:\TEMP\CompareTest\path2" -ExcludeFile "web.config" -recurse -ExcludeDifference | |
| Compares directories "D:\TEMP\CompareTest\path1" and "D:\TEMP\CompareTest\path2" recursively, excluding "web.config". | |
| Results only include the files that are equal; different files are excluded from the results. | |
| .EXAMPLE | |
| Compare-Directory -reference "D:\TEMP\CompareTest\path1" -difference "D:\TEMP\CompareTest\path2" -ExcludeFile "web.config" -recurse -Passthru | |
| Compares directories "D:\TEMP\CompareTest\path1" and "D:\TEMP\CompareTest\path2" recursively, excluding "web.config" and returns NO comparison | |
| results, but the different files themselves! | |
| FullName | |
| -------- | |
| D:\TEMP\CompareTest\path2\bin\site3.dll | |
| D:\TEMP\CompareTest\path2\index.html | |
| D:\TEMP\CompareTest\path1\index.html | |
| D:\TEMP\CompareTest\path1\web_2.config | |
| .LINK | |
| Compare-Object | |
| #> | |
| } | |
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