Turtle

0.1

Types/Turtle/get_WEBP.ps1

                                $chromiumNames = 'chromium','chrome','msedge'

foreach ($browserName in $chromiumNames) {

    $chromiumCommand = 

        $ExecutionContext.SessionState.InvokeCommand.GetCommand($browserName,'Application')

    if (-not $chromiumCommand) { 

        $chromiumCommand = 

            Get-Process -Name $browserName -ErrorAction Ignore | 

            Select-Object -First 1 -ExpandProperty Path

    }

    if ($chromiumCommand) { break }

}

if (-not $chromiumCommand) {

    Write-Error "No Chromium-based browser found. Please install one of: $($chromiumNames -join ', ')"

    return

}

$pngRasterizer = $this.Canvas -replace '/\*Insert-Post-Processing-Here\*/', @'

    const dataUrl = await canvas.toDataURL('image/webp')

    console.log(dataUrl)

    const newImage = document.createElement('img')

    newImage.src = dataUrl

    document.body.appendChild(newImage)

'@

$appDataRoot = [Environment]::GetFolderPath("ApplicationData")

$appDataPath = Join-Path $appDataRoot 'Turtle'

$filePath   = Join-Path $appDataPath 'Turtle.raster.html'

$null = New-Item -ItemType File -Force -Path $filePath -Value (

    $pngRasterizer -join [Environment]::NewLine

)

# $pngRasterizer > $filePath

$headlessArguments = @(

    '--headless', # run in headless mode

    '--dump-dom', # dump the DOM to stdout

    '--disable-gpu', # disable GPU acceleration

    '--no-sandbox' # disable the sandbox if running in CI/CD            

)

$chromeOutput = & $chromiumCommand @headlessArguments "$filePath" | Out-String 

if ($chromeOutput -match '<img\ssrc="data:image/\w+;base64,(?<b64>[^"]+)') {

    ,[Convert]::FromBase64String($matches.b64)

}