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function vcpkgHasModule([Parameter(Mandatory=$true)][string]$moduleName)
{
return [bool](Get-Module -ListAvailable -Name $moduleName)
}
function vcpkgCreateDirectoryIfNotExists([Parameter(Mandatory=$true)][string]$dirPath)
{
if (!(Test-Path $dirPath))
{
New-Item -ItemType Directory -Path $dirPath | Out-Null
}
}
function vcpkgCreateParentDirectoryIfNotExists([Parameter(Mandatory=$true)][string]$path)
{
$parentDir = split-path -parent $path
if ([string]::IsNullOrEmpty($parentDir))
{
return
}
if (!(Test-Path $parentDir))
{
New-Item -ItemType Directory -Path $parentDir | Out-Null
}
}
function vcpkgRemoveItem([Parameter(Mandatory=$true)][string]$dirPath)
{
if (Test-Path $dirPath)
{
Remove-Item $dirPath -Recurse -Force
}
}
function vcpkgHasCommand([Parameter(Mandatory=$true)][string]$commandName)
{
return [bool](Get-Command -Name $commandName -ErrorAction SilentlyContinue)
}
function vcpkgHasCommandParameter([Parameter(Mandatory=$true)][string]$commandName, [Parameter(Mandatory=$true)][string]$parameterName)
{
return (Get-Command $commandName).Parameters.Keys -contains $parameterName
}
function vcpkgGetCredentials()
{
if (vcpkgHasCommandParameter -commandName 'Get-Credential' -parameterName 'Message')
{
return Get-Credential -Message "Enter credentials for Proxy Authentication"
}
else
{
Write-Host "Enter credentials for Proxy Authentication"
return Get-Credential
}
}
function vcpkgGetSHA256([Parameter(Mandatory=$true)][string]$filePath)
{
if (vcpkgHasCommand -commandName 'Microsoft.PowerShell.Utility\Get-FileHash')
{
Write-Verbose("Hashing with Microsoft.PowerShell.Utility\Get-FileHash")
$hash = (Microsoft.PowerShell.Utility\Get-FileHash -Path $filePath -Algorithm SHA256).Hash
}
elseif(vcpkgHasCommand -commandName 'Pscx\Get-Hash')
{
Write-Verbose("Hashing with Pscx\Get-Hash")
$hash = (Pscx\Get-Hash -Path $filePath -Algorithm SHA256).HashString
}
else
{
Write-Verbose("Hashing with .NET")
$hashAlgorithm = [Security.Cryptography.HashAlgorithm]::Create("SHA256")
$fileAsByteArray = [io.File]::ReadAllBytes($filePath)
$hashByteArray = $hashAlgorithm.ComputeHash($fileAsByteArray)
$hash = -Join ($hashByteArray | ForEach-Object {"{0:x2}" -f $_})
}
return $hash.ToLower()
}
function vcpkgCheckEqualFileHash( [Parameter(Mandatory=$true)][string]$filePath,
[Parameter(Mandatory=$true)][string]$expectedHash,
[Parameter(Mandatory=$true)][string]$actualHash )
{
if ($expectedDownloadedFileHash -ne $downloadedFileHash)
{
Write-Host ("`nFile does not have expected hash:`n" +
" File path: [ $filePath ]`n" +
" Expected hash: [ $expectedHash ]`n" +
" Actual hash: [ $actualHash ]`n")
throw "Invalid Hash for file $filePath"
}
}
function vcpkgDownloadFile( [Parameter(Mandatory=$true)][string]$url,
[Parameter(Mandatory=$true)][string]$downloadPath)
{
if (Test-Path $downloadPath)
{
return
}
vcpkgCreateParentDirectoryIfNotExists $downloadPath
$downloadPartPath = "$downloadPath.part"
vcpkgRemoveItem $downloadPartPath
$wc = New-Object System.Net.WebClient
if (!$wc.Proxy.IsBypassed($url))
{
$wc.Proxy.Credentials = vcpkgGetCredentials
}
$wc.DownloadFile($url, $downloadPartPath)
Move-Item -Path $downloadPartPath -Destination $downloadPath
}
function vcpkgExtractFile( [Parameter(Mandatory=$true)][string]$file,
[Parameter(Mandatory=$true)][string]$destinationDir,
[Parameter(Mandatory=$true)][string]$outFilename)
{
vcpkgCreateDirectoryIfNotExists $destinationDir
$output = "$destinationDir\$outFilename"
vcpkgRemoveItem $output
$destinationPartial = "$destinationDir\partially-extracted"
vcpkgRemoveItem $destinationPartial
vcpkgCreateDirectoryIfNotExists $destinationPartial
$shell = new-object -com shell.application
$zip = $shell.NameSpace($file)
$itemCount = $zip.Items().Count
if (vcpkgHasCommand -commandName 'Microsoft.PowerShell.Archive\Expand-Archive')
{
Write-Verbose("Extracting with Microsoft.PowerShell.Archive\Expand-Archive")
Microsoft.PowerShell.Archive\Expand-Archive -path $file -destinationpath $destinationPartial
}
elseif (vcpkgHasCommand -commandName 'Pscx\Expand-Archive')
{
Write-Verbose("Extracting with Pscx\Expand-Archive")
Pscx\Expand-Archive -path $file -OutputPath $destinationPartial
}
else
{
Write-Verbose("Extracting via shell")
foreach($item in $zip.items())
{
# Piping to Out-Null is used to block until finished
$shell.Namespace($destinationPartial).copyhere($item) | Out-Null
}
}
if ($itemCount -eq 1)
{
Move-Item -Path "$destinationPartial\*" -Destination $output
vcpkgRemoveItem $destinationPartial
}
else
{
Move-Item -Path $destinationPartial -Destination $output
}
}
function vcpkgInvokeCommand()
{
param ( [Parameter(Mandatory=$true)][string]$executable,
[string]$arguments = "",
[switch]$wait)
Write-Verbose "Executing: ${executable} ${arguments}"
$process = Start-Process -FilePath $executable -ArgumentList $arguments -PassThru
if ($wait)
{
Wait-Process -InputObject $process
$ec = $process.ExitCode
Write-Verbose "Execution terminated with exit code $ec."
}
}
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