Merge pull request #1 from cwiede/master

initial version

.gitignore

@@ -5,6 +5,21 @@ __pycache__/
 
 # C extensions
 *.so
+*.dll
+binary/
+
+# installed include files
+include/
+
+# scons
+.sconsign.dblite
+workspace/build
+
+# files generated during tests
+nexxT/tests/core/test1.saved.json
+nexxT/tests/core/test_except_constr_tmp.json
+*.guistate
+
 
 # Distribution / packaging
 .Python

NOTICE

@@ -0,0 +1,2 @@
+nexxT
+Copyright (C) 2020 ifm electronic gmbh

nexxT/__init__.py

@@ -0,0 +1,57 @@
+# SPDX-License-Identifier: Apache-2.0
+# Copyright (C) 2020 ifm electronic gmbh
+#
+# THE PROGRAM IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND.
+#
+
+"""
+Setup the logging here until we have a better place.
+"""
+
+def setup():
+    import logging
+    from pathlib import Path
+    import os
+    import sys
+    import platform
+
+    logger = logging.getLogger()
+    INTERNAL = 5 # setup log level for internal messages
+    logging.addLevelName(INTERNAL, "INTERNAL")
+    def internal(self, message, *args, **kws):
+        if self.isEnabledFor(INTERNAL):
+            # Yes, logger takes its '*args' as 'args'.
+            self._log(INTERNAL, message, args, **kws)
+    logging.Logger.internal = internal
+
+    console = logging.StreamHandler()
+    console.setFormatter(logging.Formatter("%(asctime)s %(levelname)s %(name)s: %(message)s"))
+    logger.addHandler(console)
+    logger.info("configured logger")
+    logger.setLevel(logging.INFO)
+
+    global useCImpl
+    useCImpl = not bool(int(os.environ.get("NEXXT_DISABLE_CIMPL", "0")))
+    if useCImpl:
+        # make sure to import PySide2 before loading the cnexxT extension module because
+        # there is a link-time dependency which would be impossible to resolve otherwise
+        import PySide2.QtCore
+        p = os.environ.get("NEXXT_CEXT_PATH", None)
+        if p is None:
+            variant = os.environ.get("NEXXT_VARIANT", "release")
+            cplatform = "linux_x86_64" if platform.system() == "Linux" else "msvc_x86_64"
+            p = [p for p in [Path(__file__).parent / "binary" / cplatform / variant,
+                             Path(__file__).parent / "binary" / cplatform / variant] if p.exists()]
+            if len(p) > 0:
+                p = p[0].absolute()
+            else:
+                p = None
+        if p is not None:
+            p = str(Path(p).absolute())
+            logger.info("c extension module search path: %s", p)
+            sys.path.append(p)
+        import cnexxT as imp_cnexxT
+        global cnexxT
+        cnexxT = imp_cnexxT
+
+setup()