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|
[CmdletBinding()]
param(
[string]$Dependency
)
Import-Module BitsTransfer
$scriptsDir = split-path -parent $MyInvocation.MyCommand.Definition
$vcpkgRootDir = & $scriptsDir\findFileRecursivelyUp.ps1 $scriptsDir .vcpkg-root
$downloadsDir = "$vcpkgRootDir\downloads"
function SelectProgram([Parameter(Mandatory=$true)][string]$Dependency)
{
function promptForDownload([string]$title, [string]$message, [string]$yesDescription, [string]$noDescription)
{
if ((Test-Path "$downloadsDir\AlwaysAllowEverything") -Or (Test-Path "$downloadsDir\AlwaysAllowDownloads"))
{
return $true
}
$yes = New-Object System.Management.Automation.Host.ChoiceDescription "&Yes", $yesDescription
$no = New-Object System.Management.Automation.Host.ChoiceDescription "&No", $noDescription
$AlwaysAllowDownloads = New-Object System.Management.Automation.Host.ChoiceDescription "&Always Allow Downloads", ($yesDescription + "(Future download prompts will not be displayed)")
$options = [System.Management.Automation.Host.ChoiceDescription[]]($yes, $no, $AlwaysAllowDownloads)
$result = $host.ui.PromptForChoice($title, $message, $options, 0)
switch ($result)
{
0 {return $true}
1 {return $false}
2 {
New-Item "$downloadsDir\AlwaysAllowDownloads" -type file -force | Out-Null
return $true
}
}
throw "Unexpected result"
}
function performDownload( [Parameter(Mandatory=$true)][string]$Dependency,
[Parameter(Mandatory=$true)][string]$url,
[Parameter(Mandatory=$true)][string]$downloadDir,
[Parameter(Mandatory=$true)][string]$downloadPath,
[Parameter(Mandatory=$true)][string]$downloadVersion,
[Parameter(Mandatory=$true)][string]$requiredVersion)
{
if (Test-Path $downloadPath)
{
return
}
$title = "Download " + $Dependency
$message = ("No suitable version of " + $Dependency + " was found (requires $requiredVersion or higher). Download portable version?")
$yesDescription = "Downloads " + $Dependency + " v" + $downloadVersion +" app-locally."
$noDescription = "Does not download " + $Dependency + "."
$userAllowedDownload = promptForDownload $title $message $yesDescription $noDescription
if (!$userAllowedDownload)
{
throw [System.IO.FileNotFoundException] ("Could not detect suitable version of " + $Dependency + " and download not allowed")
}
if (!(Test-Path $downloadDir))
{
New-Item -ItemType directory -Path $downloadDir | Out-Null
}
if ($Dependency -ne "git") # git fails with BITS
{
Start-BitsTransfer -Source $url -Destination $downloadPath -ErrorAction SilentlyContinue
}
else
{
if (!(Test-Path $downloadPath))
{
Write-Host("Downloading $Dependency...")
(New-Object System.Net.WebClient).DownloadFile($url, $downloadPath)
}
}
}
# Enums (without resorting to C#) are only available on powershell 5+.
$ExtractionType_NO_EXTRACTION_REQUIRED = 0
$ExtractionType_ZIP = 1
$ExtractionType_SELF_EXTRACTING_7Z = 2
# Using this to wait for the execution to finish
function Invoke-Command()
{
param ( [string]$program = $(throw "Please specify a program" ),
[string]$argumentString = "",
[switch]$waitForExit )
$psi = new-object "Diagnostics.ProcessStartInfo"
$psi.FileName = $program
$psi.Arguments = $argumentString
$proc = [Diagnostics.Process]::Start($psi)
if ( $waitForExit )
{
$proc.WaitForExit();
}
}
function Expand-ZIPFile($file, $destination)
{
Write-Host($file)
Write-Host($destination)
$shell = new-object -com shell.application
$zip = $shell.NameSpace($file)
foreach($item in $zip.items())
{
# Piping to Out-Null is used to block until finished
$shell.Namespace($destination).copyhere($item) | Out-Null
}
}
if($Dependency -eq "cmake")
{
$requiredVersion = "3.5.0"
$downloadVersion = "3.5.2"
$url = "https://cmake.org/files/v3.5/cmake-3.5.2-win32-x86.zip"
$downloadName = "cmake-3.5.2-win32-x86.zip"
$expectedDownloadedFileHash = "671073aee66b3480a564d0736792e40570a11e861bb34819bb7ae7858bbdfb80"
$executableFromDownload = "$downloadsDir\cmake-3.5.2-win32-x86\bin\cmake.exe"
$extractionType = $ExtractionType_ZIP
}
elseif($Dependency -eq "nuget")
{
$requiredVersion = "1.0.0"
$downloadVersion = "3.4.3"
$url = "https://dist.nuget.org/win-x86-commandline/v3.4.3/nuget.exe"
$downloadName = "nuget.exe"
$expectedDownloadedFileHash = "3B1EA72943968D7AF6BACDB4F2F3A048A25AFD14564EF1D8B1C041FDB09EBB0A"
$executableFromDownload = "$downloadsDir\nuget.exe"
$extractionType = $ExtractionType_NO_EXTRACTION_REQUIRED
}
elseif($Dependency -eq "git")
{
$requiredVersion = "2.0.0"
$downloadVersion = "2.8.3"
$url = "https://github.com/git-for-windows/git/releases/download/v2.8.3.windows.1/PortableGit-2.8.3-32-bit.7z.exe" # We choose the 32-bit version
$downloadName = "PortableGit-2.8.3-32-bit.7z.exe"
$expectedDownloadedFileHash = "DE52D070219E9C4EC1DB179F2ADBF4B760686C3180608F0382A1F8C7031E72AD"
# There is another copy of git.exe in PortableGit\bin. However, an installed version of git add the cmd dir to the PATH.
# Therefore, choosing the cmd dir here as well.
$executableFromDownload = "$downloadsDir\PortableGit\cmd\git.exe"
$extractionType = $ExtractionType_SELF_EXTRACTING_7Z
}
else
{
throw "Unknown program requested"
}
$downloadPath = "$downloadsDir\$downloadName"
performDownload $Dependency $url $downloadsDir $downloadPath $downloadVersion $requiredVersion
#calculating the hash
$hashAlgorithm = [Security.Cryptography.HashAlgorithm]::Create("SHA256")
$fileAsByteArray = [io.File]::ReadAllBytes($downloadPath)
$hashByteArray = $hashAlgorithm.ComputeHash($fileAsByteArray)
$downloadedFileHash = -Join ($hashByteArray | ForEach {"{0:x2}" -f $_})
if ($expectedDownloadedFileHash -ne $downloadedFileHash)
{
throw [System.IO.FileNotFoundException] ("Mismatching hash of the downloaded " + $Dependency)
}
if ($extractionType -eq $ExtractionType_NO_EXTRACTION_REQUIRED)
{
# do nothing
}
elseif($extractionType -eq $ExtractionType_ZIP)
{
if (-not (Test-Path $executableFromDownload)) # consider renaming the extraction folder to make sure the extraction finished
{
# Expand-Archive $downloadPath -dest "$downloadsDir" -Force # Requires powershell 5+
Expand-ZIPFile -File $downloadPath -Destination $downloadsDir
}
}
elseif($extractionType -eq $ExtractionType_SELF_EXTRACTING_7Z)
{
if (-not (Test-Path $executableFromDownload))
{
Invoke-Command $downloadPath "-y" -waitForExit:$true
}
}
else
{
throw "Invalid extraction type"
}
if (-not (Test-Path $executableFromDownload))
{
throw [System.IO.FileNotFoundException] ("Could not detect or download " + $Dependency)
}
}
SelectProgram $Dependency
|
