From e3d66733712e161d9287ea3f0116e5b57477b0d8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Damir=20Jeli=C4=87?= <poljar@termina.org.uk>
Date: Sun, 8 Jul 2018 12:19:16 +0200
Subject: python: Import improved python bindings.
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This commit imports the python bindings from:
    https://github.com/poljar/python-olm

The bindings are imported at commit c44b145818520d69eaaa350fb95afcb846125e0f

Minor modifications were made while importing:
    - Removed travis config
    - Removed Arch Linux PKGBUILD
    - Removed the html docs, they can be rebuild by running make html in
      the docs folder
    - Slightly modified the README

The new bindings feature some improvements over the old ones:
    - Python 2 and 3 support
    - Automatic memory management
    - Automatic memory clearing before it is freed
    - Type signatures via the python typing module
    - Full test coverage
    - Properties are utilized where it makes sense (e.g. account.id)

Signed-off-by: Damir Jelić <poljar@termina.org.uk>
---
 python/olm/_finalize.py | 65 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 python/olm/_finalize.py

(limited to 'python/olm/_finalize.py')

diff --git a/python/olm/_finalize.py b/python/olm/_finalize.py
new file mode 100644
index 0000000..9f467bc
--- /dev/null
+++ b/python/olm/_finalize.py
@@ -0,0 +1,65 @@
+# The MIT License (MIT)
+# Copyright (c) 2010 Benjamin Peterson <benjamin@python.org>
+
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+# DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
+# OR OTHER DEALINGS IN THE SOFTWARE.
+
+"""Finalization with weakrefs
+
+This is designed for avoiding __del__.
+"""
+from __future__ import print_function
+
+import sys
+import traceback
+import weakref
+
+__author__ = "Benjamin Peterson <benjamin@python.org>"
+
+
+class OwnerRef(weakref.ref):
+    """A simple weakref.ref subclass, so attributes can be added."""
+    pass
+
+
+def _run_finalizer(ref):
+    """Internal weakref callback to run finalizers"""
+    del _finalize_refs[id(ref)]
+    finalizer = ref.finalizer
+    item = ref.item
+    try:
+        finalizer(item)
+    except Exception:  # pragma: no cover
+        print("Exception running {}:".format(finalizer), file=sys.stderr)
+        traceback.print_exc()
+
+
+_finalize_refs = {}
+
+
+def track_for_finalization(owner, item, finalizer):
+    """Register an object for finalization.
+
+    ``owner`` is the the object which is responsible for ``item``.
+    ``finalizer`` will be called with ``item`` as its only argument when
+    ``owner`` is destroyed by the garbage collector.
+    """
+    ref = OwnerRef(owner, _run_finalizer)
+    ref.item = item
+    ref.finalizer = finalizer
+    _finalize_refs[id(ref)] = ref
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