How to download all versions of a file with PnP

Question

Is it possible to download all versions of a file with PnP? (with Get-PnPFile I guess, targeting SharePoint-2013)

The closest I've found was with help of how-do-i-get-the-version-of-a-file-using-pnp-powershell, but I'm stuck on downloading the versions.

$ctxt= Get-PnPContext
Get-PnPListItem -List <a Document Library> `
    | Where-Object { $_.FieldValues.Title -eq "a title" } ` # a requirement
    | Foreach-Object { 
        $f = $_.file; 
        $versions = $f.versions; 
        $ctxt.Load($f); 
        $ctxt.Load($fvs); 
        $ctxt.ExecuteQuery();
        foreach ($v in $versions){ 
           $v.Url
   }
}

The URLs are like _vti_history/<versionLabel>/<path/to/file>, is it possible to download these URLs or is there a more direct PnP solution?

Answer 1

You can use the below PnP PowerShell code:

Connect-PnPOnline -Url <url> 
$ListItems = Get-PnPListItem -List <MyDocLibrary>
$ctx= Get-PnPContext
foreach ($item in $ListItems)
{
        $file = $item.file
        $ctx.load($file)
        $ctx.ExecuteQuery()
        Write-Host $file.Name,$file.UIVersionLabel
}

Source of the above code:

How Do I get the version of a file using PnP Powershell

Other Approaches:

Download all version of a file using the PowerShell and SharePoint web service (Versions.asmx):

# ******* Variables Section ******************
#Define these variables 
$WebURL="http://sharepoint.crescent.com/sites/Operations/"
$FilePath ="http://sharepoint.crescent.com/sites/Operations/docs/designDoc.docx"
$TargetFolder = "C:\Downloads"
# *********************************************

#Web Service URL
$WebServiceURL =$WebURL+"_vti_bin/Versions.asmx"
$WebService = New-WebServiceProxy -Uri $WebServiceURL -UseDefaultCredential
$WebService.URL=$WebServiceURL

#Get File name from file path
$FileName = $FilePath.Substring($FilePath.LastIndexOf("/")+1,($FilePath.Length-$FilePath.LastIndexOf("/")-1))

#Create the Target Library if it doesn't exists
    if (!(Test-Path -path $TargetFolder))
       {   
             #If it doesn't exists, Create
             $TargetFolder = New-Item $TargetFolder -type directory
       }


#Call web service method "GetVersions" to retrieve versions collection
$FileVersions = $WebService.GetVersions($FilePath).Result
 foreach($File in $FileVersions)
 { 
  #Frame the File name : E.g. 1.0_Filename.ext
  $VersionFileName = "$($TargetFolder)\$($File.version)_$($FileName)"
  write-host $VersionFileName
  $webclient = New-Object System.Net.WebClient
     $webclient.UseDefaultCredentials = $true
  write-host $File.url
     $webclient.DownloadFile($File.url,$VersionFileName)
  Write-Host "Downloaded version: $($File.Version)"
 }

Source of the above code:

Download All Versions of a Document in SharePoint using PowerShell - Web Services

Download all versions of a file using the SharePoint PowerShell server object model:

 Get-PSSnapin -Registered
 if(-not (Get-PSSnapin "Microsoft.SharePoint.PowerShell" -ErrorAction SilentlyContinue)){Add-PSSnapin "Microsoft.SharePoint.PowerShell"}

$spSiteURL = "https://intranet.contoso.com/sites/jayant/"
$spWeb = Get-SPWeb -Identity $spSiteURL
$spDocFolder = $spWeb.GetFolder("Docs")
$spFileCollection = $spDocFolder.Files
$dlProps = @{
    DownloadURL = ''
    DownloadFileName = ''
}
$dlobjects = @()
ForEach($file in $spFileCollection){
$spFileVersionCollection= $file.Versions;
#===============get URLs of old versions===============
    if ($spFileVersionCollection) {
         ForEach($version in $spFileVersionCollection){
            $downloadversURL = $version.Url;
            $dlobject = New-Object -TypeName PSObject -Property $dlProps
            $dlobject.DownloadURL=$downloadversURL;
            $dlobject.DownloadFileName = $version.VersionLabel + "_" +$file.Name;
           $dlobjects +=$dlobject;
         }
    }
#===============get URLs of old versions===============

#================get URLs of latest versions==========
    $downloadlatestURL = $file.Url;
    $dlobject = New-Object -TypeName PSObject -Property $dlProps
    $dlobject.DownloadFileName = "Latest" + $file.UIVersionLabel + "_" +$file.Name;
   $dlobject.DownloadURL=$downloadlatestURL;
    $dlobjects +=$dlobject;
#================get URLs of latest versions==========
}
#================download version files================
$destination="C:\Users\jayant\Desktop\version files\"
$webclient = New-Object System.Net.WebClient
$webclient.UseDefaultCredentials = $true
ForEach($dlobj in $dlobjects){
    $fullURL = $spSiteURL + $dlobj.DownloadURL;
    $destinationFullPath=$destination + $dlobj.DownloadFileName;
    $webclient.DownloadFile($fullURL, $destinationFullPath);
}
#================download version files================

Source of the above code:

Download all File Versions from SharePoint

Answer 2

For SharePoint Online I'm using following code:

    Get-PnPFile -Url $item.ServerRelativeUrl -Path $destinationFolderPath -AsFile -Force # Latest version
    $ctx= Get-PnPContext
    $ctx.Load($item.Versions)
    $ctx.ExecuteQuery()
    foreach ($version in $item.Versions)
    {
        $versionValue = $version.VersionLabel
        $str = $version.OpenBinaryStream()
        $ctx.ExecuteQuery()
        $filename =  (Split-Path $item.ServerRelativeUrl -Leaf) + "." + $versionValue
        $filepath = Join-Path $destinationFolderPath $filename
        $fs = New-Object IO.FileStream $filepath ,'Append','Write','Read'
        $str.Value.CopyTo($fs) # Older version
        $fs.Close()
    }