Add get-mach-env executable to the package

Author: bartgol

cacts/__init__.py

@@ -1,8 +1,12 @@
 """ Main entry point for cacts"""
 
 from cacts.cacts import main as cacts_main
+from cacts.get_mach_env import print_mach_env
 
 __version__ = "0.1.0"
 
 def main() -> None:
     cacts_main()
+
+def get_mach_env() -> None:
+    print_mach_env()

cacts/get_mach_env.py

@@ -0,0 +1,49 @@
+import os
+import sys
+import pathlib
+import argparse
+
+from .parse_config  import parse_project, parse_machine
+from .utils         import check_minimum_python_version, GoodFormatter
+
+check_minimum_python_version(3, 4)
+
+###############################################################################
+def print_mach_env():
+###############################################################################
+    from . import __version__  # Import __version__ here to avoid circular import
+
+    args = vars(parse_command_line(sys.argv, __doc__, __version__))
+
+    project = parse_project(args['config_file'],args['root_dir'])
+    machine = parse_machine(args['config_file'],project,args['machine_name'])
+
+    print(" && ".join(machine.env_setup))
+
+    sys.exit(0)
+
+###############################################################################
+def parse_command_line(args, description, version):
+###############################################################################
+    parser = argparse.ArgumentParser(
+        usage="""\n{0} <ARGS> [--verbose]
+OR
+{0} --help
+
+\033[1mEXAMPLES:\033[0m
+    \033[1;32m# Get the env setup command for machine 'foo' using config file my_config.yaml \033[0m
+    > ./{0} foo -f my_config.yaml
+""".format(pathlib.Path(args[0]).name),
+        description=description,
+        formatter_class=GoodFormatter
+    )
+
+    parser.add_argument("-f","--config-file", default=f"{os.getcwd()}/cacts.yaml",
+        help="YAML file containing valid project/machine settings")
+
+    parser.add_argument("-r", "--root-dir", default=f"{os.getcwd()}",
+        help="The root directory of the project, where the main CMakeLists.txt file is located")
+
+    parser.add_argument("machine_name", help="The machine name for which you want the scream env")
+
+    return parser.parse_args(args[1:])

pyproject.toml

@@ -26,6 +26,7 @@ dev = [
 
 [project.scripts]
 cacts = "cacts:main"
+get-mach-env = "cacts:get_mach_env"
 
 [tool.hatch.version]
 path = "cacts/__init__.py"