uprust.ps1

param(
[String]$Edition = "msvc",
[String]$Destination = "C:\Tools\RustNMSVC",
[String[]]$Components = @("rustc", "cargo"),
[String]$7z = "C:\Program Files\7-Zip\7z.exe",
[String]$DownloadUrl = "https://static.rust-lang.org/dist/rust-nightly-x86_64-pc-windows-{0}.tar.gz"
)

function DownloadFile ($url) {
    $temp = Temp
    (New-Object System.Net.WebClient).DownloadFile($url, $temp)
    return $temp
}

function Combine {
    return [System.IO.Path]::Combine([String[]]$args)
}

function FullPath($path1) {
    return [System.IO.Path]::GetFullPath($path1)
}

function Temp() {
    return FullPath (Combine ([System.IO.Path]::GetTempPath()) ([System.IO.Path]::GetRandomFileName()))
}

$start = Get-Location
$dest = FullPath $Destination

# Download the file
$file = DownloadFile ($DownloadUrl -f $Edition)
$dir = Temp

$inclFlag = [String]::Join(' ', (([String[]]$Components) | ForEach-Object { '-i!"{0}"' -f (Combine ("rust-nightly-x86_64-pc-windows-{0}" -f $Edition) $_ ) }))

# Extract the file
& "cmd" "/c" ('"{0}" x -so "{1}" | "{0}" -si x -o"{2}" {3} -ttar' -f $7z, $file, $dir, $inclFlag)
$ext = Combine $dir ("rust-nightly-x86_64-pc-windows-{0}" -f $Edition)

Remove-Item -Recurse $Destination
New-Item -ItemType Directory $Destination
Set-Location 
foreach($component in $Components) {
    $path = Combine $ext $component
    Remove-Item -ErrorAction Continue (Combine $path "manifest.in")
    & "robocopy" $path $Destination "/MOVE" "/E"
}
Remove-Item -Recurse -ErrorAction Continue $dir
Remove-Item $file

Write-Output ("Rust installed at {0}" -f $Destination)