gistfile1.ps1

function Encode-ServiceMessageValue([string]$value)
{
	$valueBytes = [System.Text.Encoding]::UTF8.GetBytes($value)
	return [Convert]::ToBase64String($valueBytes)
}

function Set-OctopusVariable([string]$name, [string]$value) 
{ 	
    $name = Encode-ServiceMessageValue($name)
    $value = Encode-ServiceMessageValue($value)

	Write-Host ""##octopus[setVariable name='$name' value='$value']""
}

function New-OctopusArtifact([string]$path) 
{ 	
    $originalFilename = [System.IO.Path]::GetFileName($path)
    $originalFilename = Encode-ServiceMessageValue($originalFilename)

    $path = $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath($path)
    $path = [System.IO.Path]::GetFullPath($path)
    $path = Encode-ServiceMessageValue($path)

	Write-Output ""##octopus[createArtifact path='$path' originalFilename='$originalFilename']""
}

function Enable-OctopusOutputBuffer([string]$operation)
{
    $operation = Encode-ServiceMessageValue($operation)

	Write-Output ""##octopus[enableBuffer operation='$operation']""
}

function Disable-OctopusOutputBuffer()
{
	Write-Output ""##octopus[disableBuffer]""
}

# Some of this code for reading environment variables comes from Chocolatey, under the Apache II license
# https://github.com/chocolatey/chocolatey/blob/master/LICENSE

function Get-EnvironmentVariableNames([System.EnvironmentVariableTarget] $Scope)
{
    try {
        switch ($Scope) {
            'User' { Get-Item 'HKCU:\Environment' | Select-Object -ExpandProperty Property }
            'Machine' { Get-Item 'HKLM:\SYSTEM\CurrentControlSet\Control\Session Manager\Environment' | Select-Object -ExpandProperty Property }
            'Process' { Get-ChildItem Env:\ | Select-Object -ExpandProperty Key }
            default { throw ""Unsupported environment scope: $Scope"" }
        }
    }
    catch [system.exception]
    {
        return $Null
    }
}

function Get-EnvironmentVariable([string] $Name, [System.EnvironmentVariableTarget] $Scope)
{
    return [Environment]::GetEnvironmentVariable($Name, $Scope)
}

function Set-EnvVariable($Name, $Value)
{
    if ($Value -Ne $Null) {
        Set-Item ""Env:$Name"" -Value $Value
    }
}

function Update-SessionEnvironmentVariables()
{
    $scopes = 'Machine', 'User'

    $scopes | 
        % {
            $scope = $_
            Get-EnvironmentVariableNames -Scope $scope | 
                % {
                    if(($_ -ne 'TEMP') -and ($_ -ne 'TMP')){
                        $val = Get-EnvironmentVariable -Scope $scope -Name $_
                        Set-Item ""Env:$_"" -Value $val
                    }
                }
        }

    # Path gets special treatment as it combines the two together
    $paths = $scopes |
        % { (Get-EnvironmentVariable -Name 'PATH' -Scope $_) -Split ';' } |
        Select -Unique

    $Env:PATH = ($paths -join ';')
}

$ConfirmPreference = ""None""
$ErrorActionPreference = ""Stop""