New script allows running the add-on out of the GIT directory directl…

…y, avoiding

install hassle.

run.py

@@ -0,0 +1,76 @@
+# This is a small python script that launches Blender from the command line with the X-Plane exporter out of your GIT repo.  This
+# saves having to work "in" the Blender add-ons dir, having to check out code to the Blender add-ons dir, or any fancy sim-linking.
+#
+# Like the test script, --blender lets you specify an executable, and it injects the code via the --addons flag, e.g.
+#
+# python3 run.py --blender /Applications/Blender.app/Contents/MacOS/Blender
+
+import argparse
+import os
+import subprocess
+import sys
+
+def _make_argparse():
+    parser = argparse.ArgumentParser(description="Runs the XPlane2Blender test suite")
+    blender_options = parser.add_argument_group("Blender Options")
+
+    blender_options.add_argument(
+        "--blender",
+        default="blender",  # Use the blender in the system path
+        type=str,
+        help="Provide alternative path to Blender executable",
+    )
+    blender_options.add_argument(
+        "--force-blender-debug",
+        help="Turn on Blender's --debug flag",
+        action="store_true",
+    )
+    blender_options.add_argument(
+        "-n",
+        "--no-factory-startup",
+        help="Run Blender with current prefs rather than factory prefs",
+        action="store_true",
+    )
+    return parser
+
+
+def main(argv=None) -> int:
+
+    if argv is None:
+        argv = _make_argparse().parse_args(sys.argv[1:])
+
+    blender_args = [
+        argv.blender,
+        "--addons",
+        "io_xplane2blender",
+                "--factory-startup",
+    ]
+
+    if argv.no_factory_startup:
+        blender_args.remove("--factory-startup")
+
+    if argv.force_blender_debug:
+        blender_args.append("--debug")
+
+    # Small Hack!
+    # Blender stops parsing after '--', so we can append the test runner
+    # args and bridge the gap without anything fancy!
+    blender_args.extend(["--"] + sys.argv[1:])
+
+    # print the command used to execute the script
+    # to be able to easily re-run it manually to get better error output
+    print(" ".join(blender_args))
+
+    # Environment variables - in order for --addons to work, we need to have OUR folder
+    # exist, and we need to have "addons/modules" simlink BACK to us to create the illusion
+    # of the directory structure Blender expects.
+    enviro={"BLENDER_USER_SCRIPTS": os.path.dirname(os.path.realpath(__file__))}
+
+    # Run Blender, normalize output line endings because Windows is dumb
+    out = subprocess.check_output(
+        blender_args, stderr=subprocess.STDOUT, universal_newlines=True, env=enviro
+    )  # type: str
+
+
+main()
+