VSCode の拡張をオフラインインストール用に .vsix ファイルでダウンロードする (require Internet Explorer)

get_vscode_vsix.ps1

#
# Download VScode extention .vsix
#  https://code.visualstudio.com/docs/editor/extension-gallery#_common-questions
#
Param($extention_site = "https://marketplace.visualstudio.com/items?itemName=ms-vscode.PowerShell")

$ErrorActionPreference = "stop"

# setting extention site
$res = Invoke-WebRequest -Uri $extention_site

# parse html
$arr = @()
$res.ParsedHtml.getElementsByClassName("ux-table-metadata")[0].innerText -split "`n" | ForEach-Object {
    if($_ -match "[0-9a-zA-z]+") {
        $arr += $_.Trim()
    }
}
$version = $arr[1]
$uid = $arr[7]
$sp = $uid.Split(".")
$publisher = $sp[0]
$extensionname = $sp[1]
$download_url = "http://${publisher}.gallery.vsassets.io/_apis/public/gallery/publisher/${publisher}/extension/${extensionname}/${version}/assetbyname/Microsoft.VisualStudio.Services.VSIXPackage"

# download .vsxi file
$filename = "${uid}-$version.vsix"
#Write-Host "Download: ${filename}"
#Write-Host $download_url
#$start_time = Get-Date
Invoke-WebRequest -Uri $download_url -OutFile $filename
#Write-Output "Time taken: $((Get-Date).Subtract($start_time).Seconds) second(s)"