build.ps1

##########################################################################
# This is the Cake bootstrapper script for PowerShell.
# This file was downloaded from https://github.com/cake-build/resources
# Feel free to change this file to fit your needs.
##########################################################################

[CmdletBinding()]
Param(
    [string]$Script = "build.cake",
    [string]$Target = "Default",
    [ValidateSet("Release", "Debug")]
    [string]$Configuration = "Release",
    [ValidateSet("Quiet", "Minimal", "Normal", "Verbose", "Diagnostic")]
    [string]$Verbosity = "Diagnostic",
    [switch]$Experimental,
    [Alias("DryRun","Noop")]
    [switch]$WhatIf,
    [switch]$Mono,
    [switch]$SkipToolPackageRestore,
    [Parameter(Position=0,Mandatory=$false,ValueFromRemainingArguments=$true)]
    [string[]]$ScriptArgs
)

[Reflection.Assembly]::LoadWithPartialName("System.Security") | Out-Null
function MD5HashFile([string] $filePath)
{
    if ([string]::IsNullOrEmpty($filePath) -or !(Test-Path $filePath -PathType Leaf))
    {
        return $null
    }

    [System.IO.Stream] $file = $null;
    [System.Security.Cryptography.MD5] $md5 = $null;
    try
    {
        $md5 = [System.Security.Cryptography.MD5]::Create()
        $file = [System.IO.File]::OpenRead($filePath)
        return [System.BitConverter]::ToString($md5.ComputeHash($file))
    }
    finally
    {
        if ($file -ne $null)
        {
            $file.Dispose()
        }
    }
}

Write-Host "Preparing to run build script..."

if(!$PSScriptRoot){
    $PSScriptRoot = Split-Path $MyInvocation.MyCommand.Path -Parent
}

$TOOLS_DIR = Join-Path $PSScriptRoot "tools"
$NUGET_EXE = Join-Path $TOOLS_DIR "nuget.exe"
$CAKE_EXE = Join-Path $TOOLS_DIR "Cake/Cake.exe"
#$NUGET_URL = "https://dist.nuget.org/win-x86-commandline/latest/nuget.exe"
$NUGET_URL = "https://dist.nuget.org/win-x86-commandline/v4.0.0/nuget.exe"
$PACKAGES_CONFIG = Join-Path $TOOLS_DIR "packages.config"
$PACKAGES_CONFIG_MD5 = Join-Path $TOOLS_DIR "packages.config.md5sum"

# Should we use mono?
$UseMono = "";
if($Mono.IsPresent) {
    Write-Verbose -Message "Using the Mono based scripting engine."
    $UseMono = "-mono"
}

# Should we use the new Roslyn?
$UseExperimental = "";
if($Experimental.IsPresent -and !($Mono.IsPresent)) {
    Write-Host -Message "Using experimental version of Roslyn."
    $UseExperimental = "-experimental"
}

# Is this a dry run?
$UseDryRun = "";
if($WhatIf.IsPresent) {
    $UseDryRun = "-dryrun"
}

# Make sure tools folder exists
if ((Test-Path $PSScriptRoot) -and !(Test-Path $TOOLS_DIR)) {
    Write-Host -Message "Creating tools directory..."
    New-Item -Path $TOOLS_DIR -Type directory | out-null
}

# Make sure that packages.config exist.
if (!(Test-Path $PACKAGES_CONFIG)) {
    Write-Host -Message "Downloading packages.config..."
    try { (New-Object System.Net.WebClient).DownloadFile("http://cakebuild.net/download/bootstrapper/packages", $PACKAGES_CONFIG) } catch {
        Throw "Could not download packages.config."
    }
}

# Try find NuGet.exe in path if not exists
if (!(Test-Path $NUGET_EXE)) {
    Write-Host -Message "Trying to find nuget.exe in PATH..."
    $existingPaths = $Env:Path -Split ';' | Where-Object { (![string]::IsNullOrEmpty($_)) -and (Test-Path $_) }
    $NUGET_EXE_IN_PATH = Get-ChildItem -Path $existingPaths -Filter "nuget.exe" | Select -First 1
    if ($NUGET_EXE_IN_PATH -ne $null -and (Test-Path $NUGET_EXE_IN_PATH.FullName)) {
        Write-Host -Message "Found in PATH at $($NUGET_EXE_IN_PATH.FullName)."
        $NUGET_EXE = $NUGET_EXE_IN_PATH.FullName
    }
}

# Try download NuGet.exe if not exists
if (!(Test-Path $NUGET_EXE)) {
    Write-Host -Message "Downloading NuGet.exe..."
    try {
        (New-Object System.Net.WebClient).DownloadFile($NUGET_URL, $NUGET_EXE)
    } catch {
        Throw "Could not download NuGet.exe."
    }
}

# Save nuget.exe path to environment to be available to child processed
$ENV:NUGET_EXE = $NUGET_EXE

# Restore tools from NuGet?
if(-Not $SkipToolPackageRestore.IsPresent) {
    Push-Location
    Set-Location $TOOLS_DIR

    # Check for changes in packages.config and remove installed tools if true.
    [string] $md5Hash = MD5HashFile($PACKAGES_CONFIG)
    if((!(Test-Path $PACKAGES_CONFIG_MD5)) -Or
      ($md5Hash -ne (Get-Content $PACKAGES_CONFIG_MD5 ))) {
        Write-Host -Message "Missing or changed package.config hash..."
        Remove-Item * -Recurse -Exclude packages.config,nuget.exe
    }

    Write-Host -Message "Restoring tools from NuGet..."
    $NuGetOutput = Invoke-Expression "&`"$NUGET_EXE`" install -ExcludeVersion -source `"https://api.nuget.org/v3/index.json`" -OutputDirectory `"$TOOLS_DIR`""

    if ($LASTEXITCODE -ne 0) {
        Throw "An error occured while restoring NuGet tools."
    }
    else
    {
        $md5Hash | Out-File $PACKAGES_CONFIG_MD5 -Encoding "ASCII"
    }
    Write-Host -Message ($NuGetOutput | out-string)
    Pop-Location
}

# Make sure that Cake has been installed.
if (!(Test-Path $CAKE_EXE)) {
    Throw "Could not find Cake.exe at $CAKE_EXE"
}

# Start Cake
Write-Host "Running build script..."
Invoke-Expression "& `"$CAKE_EXE`" `"$Script`" -target=`"$Target`" -configuration=`"$Configuration`" -verbosity=`"$Verbosity`" $UseMono $UseDryRun $UseExperimental $ScriptArgs"
exit $LASTEXITCODE