Powershell changes

scripts/bundled_installer.bat

@@ -0,0 +1 @@
+Powershell.exe -executionpolicy remotesigned -File "%~dp0\bundled_installer.ps1"

scripts/bundled_installer.ps1

@@ -0,0 +1,57 @@
+function Write-OutputWithInvertedColors([String] $Message) {
+    Write-Host $Message -ForegroundColor Black -BackgroundColor White
+}
+
+function Get-HomePath() {
+    if (Test-Path Env:\USERPROFILE) {
+        return $env:USERPROFILE
+    } elseif (Test-Path Env:\HOMEDRIVE -and Env:\HOMEPATH) {
+        return $env:HOMEDRIVE + $env:HOMEPATH
+    } elseif (Test-Path Env:\LOCALAPPDATA) {
+        return $env:LOCALAPPDATA
+    } elseif (Test-Path Env:\APPDATA) {
+        return $env:APPDATA
+    } else {
+        Write-Host "Cannot determine user's home directory." -ForegroundColor Red
+        Exit 1
+    }
+}
+
+function Exit-OnFailure() {
+    if ($LASTEXITCODE -ne 0) {
+        Write-Host "Exiting due to failure" -ForegroundColor Red
+        exit 1
+    }
+}
+
+function Update-UserEnvironmentPath {
+    $env:Path =
+        [System.Environment]::GetEnvironmentVariable("Path","Machine") +
+        ";" +
+        [System.Environment]::GetEnvironmentVariable("Path","User")
+}
+
+function Write-StepTitle([String] $Message) {
+    $equals = "=" * 46
+    Write-Host ""
+    Write-OutputWithInvertedColors $equals
+    Write-OutputWithInvertedColors $Message
+    Write-OutputWithInvertedColors $equals
+}
+Write-StepTitle "I. Installing Python                          "
+powershell "$PSScriptRoot\install-python.ps1"
+Exit-OnFailure
+Update-UserEnvironmentPath
+
+Write-StepTitle "II. Creating self-contained EBCLI installation"
+$HomeDir = Get-HomePath
+Write-Host "Installing the EBCLI in $HomeDir\.ebcli-virtual-env"
+python "$PSScriptRoot\ebcli_installer.py" --virtualenv-executable "$PSScriptRoot\virtualenv\bin\virtualenv.exe" --hide-export-recommendation --location $HomeDir
+Exit-OnFailure
+
+$PathExporter = "$HomeDir\.ebcli-virtual-env\executables\path_exporter.vbs"
+if ([System.IO.File]::Exists($PathExporter)) {
+    Write-StepTitle "III. Exporting `eb` PATH's                    "
+    & "$HomeDir\.ebcli-virtual-env\executables\path_exporter.vbs"
+    Update-UserEnvironmentPath
+}

scripts/install-python.ps1

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+$PythonInstaller = "$PSScriptRoot\python3.7.3.exe"
+$StepNumber = 1
+
+function Write-StepTitle([String] $StepMessage) {
+    $StepMessage="$Script:StepNumber. $StepMessage"
+    $MessageLength=$StepMessage.length
+    $RepeatedStars = "*" * $MessageLength
+    Write-Host ""
+    Write-Host $RepeatedStars
+    Write-Host $StepMessage
+    Write-Host $RepeatedStars
+    $Script:StepNumber = $Script:StepNumber + 1
+}
+
+function Get-PythonExecutable {
+    Write-StepTitle "Looking for existing Python 3.7.3 installation."
+    return Get-WmiObject -Namespace "root/cimv2" -Class Win32_Product -Filter "Name Like 'Python 3.7.3 Executables%'"
+}
+
+function Get-PythonInstallationTarget {
+    if ([Environment]::Is64BitOperatingSystem) {
+        Write-StepTitle "Downloading x64 version of Python."
+        return "https://www.python.org/ftp/python/3.7.3/python-3.7.3-amd64-webinstall.exe"
+    } else {
+        Write-StepTitle "Downloading x86 version of Python."
+        return "https://www.python.org/ftp/python/3.7.3/python-3.7.3-webinstall.exe"
+    }
+}
+
+function Get-PythonMSI {
+    if ([System.IO.File]::Exists($PythonInstaller)) {
+        Remove-Item $PythonInstaller
+    }
+    $url = Get-PythonInstallationTarget
+    $client = New-Object System.Net.WebClient
+    try {
+        $client.DownloadFile($url, $PythonInstaller)
+    } catch {
+        Write-Host "Failed to download Python. The following exception was raised:" -ForegroundColor Red
+        Write-Host $_.exception -ForegroundColor Red
+
+        Exit 1
+    }
+}
+
+function Install-Python {
+    Write-StepTitle "Installing Python. Do not close this window."
+    Write-Host "Installing Python. Do not close this window."
+    $install = Start-Process $PythonInstaller -ArgumentList "InstallAllUsers=1 PrependPath=1" -PassThru -wait
+    if ($install.ExitCode -eq 0) {
+        Write-Host "Installation completed successfully." -ForegroundColor Green
+    } elseif ($install.ExitCode -eq 1602) {
+        Write-Host "Installer was exited by the user." -ForegroundColor Red
+        Exit 1
+    } else {
+        Write-Host "Installation failed with exit code $install.ExitCode" -ForegroundColor Red
+        Exit 1
+    }
+}
+
+function Update-UserEnvironmentPath {
+    Write-StepTitle "Updating Environment PATH of this shell."
+    $env:Path =
+        [System.Environment]::GetEnvironmentVariable("Path","Machine") +
+        ";" +
+        [System.Environment]::GetEnvironmentVariable("Path","User")
+}
+
+function Install-Virtualenv {
+    Write-StepTitle "Installing virtualenv"
+    Invoke-Expression "pip install virtualenv --target $PSScriptRoot\virtualenv --upgrade"
+}
+
+$PythonExecutable = Get-PythonExecutable
+if ($PythonExecutable.count -eq 0) {
+    Get-PythonMSI
+    Install-Python
+    Update-UserEnvironmentPath
+    Remove-Item $PythonInstaller
+} else {
+    Write-Host "Python 3.7.3 is already installed." -ForegroundColor Green
+}
+Install-Virtualenv