Invoke-Build powershell script that can create a .exe for Windows usi…

…ng pyinstaller.

python/ecal-foxglove-bridge.build.ps1

@@ -0,0 +1,71 @@
+param(
+    $eCALVersion = '5.11.3', #
+    [ValidateSet('3.8', '3.9', '3.10', '3.11')]
+    [string]$PythonVersion = '3.11'  # 3.8, 3.9, 3.10, 3.11
+)
+
+function eCALWheelName {
+ $PyVersion =  $PythonVersion -replace '\.' , ''
+ $WheelName = "ecal5-" + $eCALVersion + "-cp" + $PyVersion + "-cp" + $PyVersion + "-win_amd64.whl"
+ return $WheelName 
+}
+
+function DownloadeCALPythonWheel {
+  $WheelName = eCALWheelName
+  $eCALTagName = "v" + $eCALVersion
+  $DownloadCommand = "gh release download " + $eCALTagName + " -p " + $WheelName + " -R github.com/eclipse-ecal/ecal"
+  Write-Build Green $DownloadCommand
+  exec { Invoke-Expression $DownloadCommand }
+}
+
+function BuildDirName {
+  $BuildDirName = "_build_eCAL_$($eCALVersion)_python_$($PythonVersion)"
+  return $BuildDirName   
+}
+
+function ChangeDirectory {
+  $BuildDir = BuildDirName
+  New-Item -ItemType Directory -Path .\$BuildDir
+  Set-Location -Path .\$BuildDir
+}
+
+# Synopsis: Create / Activate virtual environment
+function ActivateEnvironment {
+  if ( -not (Test-Path '.venv' ) )
+  { 
+    Write-Build Green 'Creating a virtual environment for the build'
+    exec { py -$PythonVersion -m venv .venv }
+  }
+  Write-Build Green 'Activating virtual environment'
+  .venv\Scripts\activate
+}
+
+function InstallRequirements {
+  Write-Build Green 'Installing Requirements'
+  exec { python --version }
+  exec { python -m pip install -r ..\requirements.txt }
+  DownloadeCALPythonWheel
+  $WheelName = eCALWheelName
+  exec { python -m pip install $WheelName }
+  exec { python -m pip install pyinstaller }
+}
+
+# Synopsis: Deactivate virtual environment
+function DeactivateEnvironment {
+  exec { deactivate }
+}
+
+function BuildExe {
+  Write-Build Green 'Building the installer'
+  exec {pyinstaller ../ecal-foxglove-bridge.py --onefile}
+}
+
+task Build {
+  ChangeDirectory
+  ActivateEnvironment
+  InstallRequirements
+  BuildExe
+  DeactivateEnvironment
+}
+
+task . Build