public/Get-PSakeScriptTasks.ps1

function Get-PSakeScriptTasks {
    <#
    .SYNOPSIS
    Returns meta data about all the tasks defined in the provided psake script.
 
    .DESCRIPTION
    Returns meta data about all the tasks defined in the provided psake script.
 
    .PARAMETER buildFile
    The path to the psake build script to read the tasks from.
 
    .EXAMPLE
    PS C:\>Get-PSakeScriptTasks -buildFile '.\build.ps1'
 
    DependsOn Alias Name Description
    --------- ----- ---- -----------
    {} Compile
    {} Clean
    {Test} Default
    {Clean, Compile} Test
 
    Gets the psake tasks contained in the 'build.ps1' file.
 
    .LINK
    Invoke-psake
    #>

    [CmdletBinding()]
    param(
        [string]$buildFile
    )

    if (-not $buildFile) {
        $buildFile = $psake.config_default.buildFileName
    }

    try {
        ExecuteInBuildFileScope $buildFile $MyInvocation.MyCommand.Module {
            param($currentContext, $module)
            return GetTasksFromContext $currentContext
        }
    } finally {
        CleanupEnvironment
    }
}