Use PowerShell to download all versions of a Nuget package with one click

In a blink of an eye, I haven't written a blog for several years. I've come to the blog park to have a breeze. Recently, due to work needs, I work in the intranet. Fortunately, I only need to upload a *.nupkg package information to download it in a private nuget. Let's write a download script using PowerShell. What you need to pay attention to is the PowerShell suffix.ps1(The last number 1), as an example:

Download address

# Set the URL of the NuGet package list$packageName = ""
$targetHttp = "/packages/"
$targetUrl = "{0}{1}" -f $targetHttp, $packageName

Save the address

# Set the directory to save the downloaded package$outputDirectory = "D:\nuget_packages"
if (-not (Test-Path $outputDirectory)) {
    New-Item -Path $outputDirectory -ItemType Directory
}

Resolve the download version address

Define the package address that needs to be parsed when downloading

# Define download prefix$httpPrefix = "/api/v2/package/"
# Download the content of the html file$htmlContent = Invoke-WebRequest -Uri $targetUrl -UseBasicParsing | Select-Object -ExpandProperty Content
# Match tags$pattern = "&lt;.*?&gt;"
$matches = [regex]::Matches($htmlContent, $pattern)

Get all a tags

foreach ($match in $matches) {
$tag = $
# Get a tagif ($tag -like "&lt;a href=*") {
Write-Host $tag
}
}

Output result

<a href="#" rel="external nofollow" rel="external nofollow" class="showOnFocus" title="Skip To Content">
...
<a href="/packages//" rel="external nofollow" >
<a href="/packages//13.0.3" rel="external nofollow" rel="external nofollow" title="13.0.3">
...
<a href="/packages//3.5.8" rel="external nofollow" rel="external nofollow" title="3.5.8">
<a href="/stats/packages/?groupby=Version" rel="external nofollow" rel="external nofollow" title="Package Statistics">
...
<a href="/packages//13.0.3/ReportAbuse" rel="external nofollow" rel="external nofollow" title="Report the package as abusive">
<a href="/packages//13.0.3/ContactOwners" rel="external nofollow" rel="external nofollow" title="Ask the package owners a question">
...

Observe the results of the previous step and you can see that each version has a title, and the title content is a version

# Get a tag with titleif ($tag -like "*title=*") {
  Write-Host $tag        
}

Output result

<a href="#" rel="external nofollow" rel="external nofollow" class="showOnFocus" title="Skip To Content">
<a href="/packages//13.0.3" rel="external nofollow" rel="external nofollow" title="13.0.3">
...
<a href="/packages//3.5.8" rel="external nofollow" rel="external nofollow" title="3.5.8">
<a href="/stats/packages/?groupby=Version" rel="external nofollow" rel="external nofollow" title="Package Statistics">
<a href="/json" rel="external nofollow" data-track="outbound-project-url" title="Visit the project site to learn more about this package" >
...
<a href="/packages//13.0.3/ReportAbuse" rel="external nofollow" rel="external nofollow" title="Report the package as abusive">
<a href="/packages//13.0.3/ContactOwners" rel="external nofollow" rel="external nofollow" title="Ask the package owners a question">
<a href="/packages?q=Tags%3A%22json%22" rel="external nofollow" title="Search for json" class="tag">

Then the results of the previous step continue to filter

# Intercept the content of href$substr = $(9)
if ($substr -like "/packages/*") {
    Write-Host $substr
}

Output result

/packages//13.0.3" title="13.0.3">
...
/packages//3.5.8" title="3.5.8">
/packages//13.0.3/ReportAbuse" title="Report the package as abusive">
/packages//13.0.3/ContactOwners" title="Ask the package owners a question">

Is it over or not? Come again? Looking at the above results, it's still not enough to filter two unrelated ones.

Get the full content of href

# Find the position of the first double quote$index = $('"')
# Get the part/packages//13.0.3$substr = $(0,$index)

Exclude the last two versions of the a tag

# Exclude reports abuse of a tagif ($substr -notlike "*/ReportAbuse") {
# Exclude contact author a tagif ($substr -notlike "*/ContactOwners") {
# Match version$endIndex = $('/')
$startPackageIndex = $endIndex + 1
$packageVersion = $($startPackageIndex)
}
}

Download and save the file invoke-WebRequest command

# Download address nupkg$packageUrl = "{0}{1}/{2}" -f $httpPrefix,$packageName,$packageVersion
# Generate the path to save the file$packageFile = Join-Path -Path $outputDirectory -ChildPath "$packageName.$"
# Download .nupkg fileWrite-Host "Downloading $packageName version $packageVersion from $packageUrl"
Invoke-WebRequest -Uri $packageUrl -OutFile $packageFile

All codes

# Set the URL of the NuGet package list$packageName = ""
$targetHttp = "/packages/"
$targetUrl = "{0}{1}" -f $targetHttp, $packageName
# Set the directory to save the downloaded package$outputDirectory = "D:\nuget_packages"
if (-not (Test-Path $outputDirectory)) {
    New-Item -Path $outputDirectory -ItemType Directory
}
# Define download prefix$httpPrefix = "/api/v2/package/"
# Download the content of the html file$htmlContent = Invoke-WebRequest -Uri $targetUrl -UseBasicParsing | Select-Object -ExpandProperty Content
# Match tags$pattern = "&lt;.*?&gt;"
$matches = [regex]::Matches($htmlContent, $pattern)
foreach ($match in $matches) {
    $tag = $
        # Get a tag        if ($tag -like "&lt;a href=*") {
            # Get a tag with title            if ($tag -like "*title=*")
            {
                # Intercept the content of href                $substr = $(9)
                if ($substr -like "/packages/*")
                 {
                     # Find the position of the first double quote
                     $index = $('"')
                     # Get the part/packages//13.0.3
                     $substr = $(0,$index)
                     # Exclude reports abuse of a tag
                     if ($substr -notlike "*/ReportAbuse")
                    {
                        # Exclude contact author a tag                        if ($substr -notlike "*/ContactOwners")
                        {
                            # Match version                            $endIndex = $('/')
                            $startPackageIndex = $endIndex + 1
                            $packageVersion = $($startPackageIndex)
                            # Download address nupkg                            $packageUrl = "{0}{1}/{2}" -f $httpPrefix,$packageName,$packageVersion
                            # Generate the path to save the file                            $packageFile = Join-Path -Path $outputDirectory -ChildPath "$packageName.$"
                            # Download .nupkg file                            Write-Host "Downloading $packageName version $packageVersion from $packageUrl"
              Invoke-WebRequest -Uri $packageUrl -OutFile $packageFile
                            
                        }
                        
                    }
                    
                }
                
            }
            
        }
}
# Execution end pause$null = Read-Host

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