__main__.py

import sys, os
import subprocess
 
def main() -> int:
    '''
    Main entry point for running commands in the package.
    '''
    argCount = len(sys.argv)
    if argCount < 2:
        print('No arguments provided. Use -h or --help for help.')
        return 1
    if sys.argv[1] == '-h' or sys.argv[1] == '--help':
        print('Usage: python -m materialxMaterials <command> [options] where command is gpuopen, physbased, acg (AmbientCG), or polyhaven')
        return 0
 
    # Check if the command is valid
    cmdArgs = sys.argv[1:]
    if cmdArgs[0] == 'physbased':
        cmdArgs[0] = 'physicallyBasedMaterialXCmd.py'
    elif cmdArgs[0] == 'gpuopen':
        cmdArgs[0] = 'GPUOpenLoaderCmd.py'
    elif cmdArgs[0] == 'acg':
        cmdArgs[0] = 'ambientCGLoaderCmd.py'
    elif cmdArgs[0] == 'polyhaven':
        cmdArgs[0] = 'polyHavenLoaderCmd.py'
    else:
        print('Unknown command specified:', cmdArgs[0])
        return 1
 
    packageLocation = os.path.dirname(__file__)
    python_exec = sys.executable
    script_path = os.path.join(packageLocation, cmdArgs[0])
    
    cmd = [python_exec, script_path] + cmdArgs[1:]
    print('Running command:', ' '.join(cmd))
 
    # Run the command
    return subprocess.call(cmd, shell=False)
 
if __name__ == '__main__':
    sys.exit(main())