device/trezor: python2 compatibility - bundle dependencies
This commit is contained in:
Dusan Klinec
parent
9cf636af69
commit
65b9bca70e
|
|
@ -10,14 +10,28 @@ Install `protoc` for your distribution. Requirements:
|
|||
|
||||
|
||||
Soft requirement: Python 3, can be easily installed with [pyenv].
|
||||
If Python 3 is used there are no additional python dependencies.
|
||||
|
||||
### Python 2
|
||||
Since Cmake 3.12 the `FindPython` module is used to locate the Python
|
||||
interpreter in your system. It preferably searches for Python 3, if none
|
||||
is found, it searches for Python 2.
|
||||
|
||||
Workaround if there is no Python3 available:
|
||||
Lower version of the cmake uses another module which does not guarantee
|
||||
ordering. If you want to override the selected python you can do it in
|
||||
the following way:
|
||||
|
||||
```bash
|
||||
pip install backports.tempfile
|
||||
```
|
||||
export TREZOR_PYTHON=`which python3`
|
||||
```
|
||||
|
||||
|
||||
### Python 2.7+
|
||||
|
||||
Python 3 has `tempfile.TemporaryDirectory` available but Python 2 lacks
|
||||
this class so the message generation code uses `backports.tempfile` package
|
||||
bundled in the repository.
|
||||
|
||||
The minimal Python versions are 2.7 and 3.4
|
||||
|
||||
### Regenerate messages
|
||||
|
||||
|
|
|
|||
|
|
@ -14,12 +14,18 @@ import hashlib
|
|||
try:
|
||||
from tempfile import TemporaryDirectory
|
||||
except:
|
||||
# Py2 backward compatibility, optionally installed by user
|
||||
# pip install backports.tempfile
|
||||
# Py2 backward compatibility, using bundled sources.
|
||||
# Original source: pip install backports.tempfile
|
||||
try:
|
||||
from backports.tempfile import TemporaryDirectory
|
||||
# Try bundled python version
|
||||
import sys
|
||||
sys.path.append(os.path.dirname(__file__))
|
||||
from py2backports.tempfile import TemporaryDirectory
|
||||
|
||||
except:
|
||||
raise EnvironmentError('TemporaryDirectory could not be imported. Try: pip install backports.tempfile')
|
||||
raise EnvironmentError('Python 2.7+ or 3.4+ is required. '
|
||||
'TemporaryDirectory is not available in Python 2.'
|
||||
'Try to specify python to use, e.g.: "export TREZOR_PYTHON=`which python3`"')
|
||||
|
||||
|
||||
AUTO_HEADER = "# Automatically generated by pb2cpp\n"
|
||||
|
|
|
|||
|
|
@ -0,0 +1,72 @@
|
|||
"""
|
||||
https://github.com/pjdelport/backports.tempfile/blob/master/src/backports/tempfile.py
|
||||
Partial backport of Python 3.5's tempfile module:
|
||||
TemporaryDirectory
|
||||
Backport modifications are marked with marked with "XXX backport".
|
||||
"""
|
||||
from __future__ import absolute_import
|
||||
|
||||
import sys
|
||||
import warnings as _warnings
|
||||
from shutil import rmtree as _rmtree
|
||||
|
||||
from py2backports.weakref import finalize
|
||||
|
||||
|
||||
# XXX backport: Rather than backporting all of mkdtemp(), we just create a
|
||||
# thin wrapper implementing its Python 3.5 signature.
|
||||
if sys.version_info < (3, 5):
|
||||
from tempfile import mkdtemp as old_mkdtemp
|
||||
|
||||
def mkdtemp(suffix=None, prefix=None, dir=None):
|
||||
"""
|
||||
Wrap `tempfile.mkdtemp()` to make the suffix and prefix optional (like Python 3.5).
|
||||
"""
|
||||
kwargs = {k: v for (k, v) in
|
||||
dict(suffix=suffix, prefix=prefix, dir=dir).items()
|
||||
if v is not None}
|
||||
return old_mkdtemp(**kwargs)
|
||||
|
||||
else:
|
||||
from tempfile import mkdtemp
|
||||
|
||||
|
||||
# XXX backport: ResourceWarning was added in Python 3.2.
|
||||
# For earlier versions, fall back to RuntimeWarning instead.
|
||||
_ResourceWarning = RuntimeWarning if sys.version_info < (3, 2) else ResourceWarning
|
||||
|
||||
|
||||
class TemporaryDirectory(object):
|
||||
"""Create and return a temporary directory. This has the same
|
||||
behavior as mkdtemp but can be used as a context manager. For
|
||||
example:
|
||||
with TemporaryDirectory() as tmpdir:
|
||||
...
|
||||
Upon exiting the context, the directory and everything contained
|
||||
in it are removed.
|
||||
"""
|
||||
|
||||
def __init__(self, suffix=None, prefix=None, dir=None):
|
||||
self.name = mkdtemp(suffix, prefix, dir)
|
||||
self._finalizer = finalize(
|
||||
self, self._cleanup, self.name,
|
||||
warn_message="Implicitly cleaning up {!r}".format(self))
|
||||
|
||||
@classmethod
|
||||
def _cleanup(cls, name, warn_message):
|
||||
_rmtree(name)
|
||||
_warnings.warn(warn_message, _ResourceWarning)
|
||||
|
||||
|
||||
def __repr__(self):
|
||||
return "<{} {!r}>".format(self.__class__.__name__, self.name)
|
||||
|
||||
def __enter__(self):
|
||||
return self.name
|
||||
|
||||
def __exit__(self, exc, value, tb):
|
||||
self.cleanup()
|
||||
|
||||
def cleanup(self):
|
||||
if self._finalizer.detach():
|
||||
_rmtree(self.name)
|
||||
|
|
@ -0,0 +1,148 @@
|
|||
"""
|
||||
https://github.com/pjdelport/backports.weakref/blob/master/src/backports/weakref.py
|
||||
Partial backport of Python 3.6's weakref module:
|
||||
finalize (new in Python 3.4)
|
||||
Backport modifications are marked with "XXX backport".
|
||||
"""
|
||||
from __future__ import absolute_import
|
||||
|
||||
import itertools
|
||||
import sys
|
||||
from weakref import ref
|
||||
|
||||
__all__ = ['finalize']
|
||||
|
||||
|
||||
class finalize(object):
|
||||
"""Class for finalization of weakrefable objects
|
||||
finalize(obj, func, *args, **kwargs) returns a callable finalizer
|
||||
object which will be called when obj is garbage collected. The
|
||||
first time the finalizer is called it evaluates func(*arg, **kwargs)
|
||||
and returns the result. After this the finalizer is dead, and
|
||||
calling it just returns None.
|
||||
When the program exits any remaining finalizers for which the
|
||||
atexit attribute is true will be run in reverse order of creation.
|
||||
By default atexit is true.
|
||||
"""
|
||||
|
||||
# Finalizer objects don't have any state of their own. They are
|
||||
# just used as keys to lookup _Info objects in the registry. This
|
||||
# ensures that they cannot be part of a ref-cycle.
|
||||
|
||||
__slots__ = ()
|
||||
_registry = {}
|
||||
_shutdown = False
|
||||
_index_iter = itertools.count()
|
||||
_dirty = False
|
||||
_registered_with_atexit = False
|
||||
|
||||
class _Info(object):
|
||||
__slots__ = ("weakref", "func", "args", "kwargs", "atexit", "index")
|
||||
|
||||
def __init__(self, obj, func, *args, **kwargs):
|
||||
if not self._registered_with_atexit:
|
||||
# We may register the exit function more than once because
|
||||
# of a thread race, but that is harmless
|
||||
import atexit
|
||||
atexit.register(self._exitfunc)
|
||||
finalize._registered_with_atexit = True
|
||||
info = self._Info()
|
||||
info.weakref = ref(obj, self)
|
||||
info.func = func
|
||||
info.args = args
|
||||
info.kwargs = kwargs or None
|
||||
info.atexit = True
|
||||
info.index = next(self._index_iter)
|
||||
self._registry[self] = info
|
||||
finalize._dirty = True
|
||||
|
||||
def __call__(self, _=None):
|
||||
"""If alive then mark as dead and return func(*args, **kwargs);
|
||||
otherwise return None"""
|
||||
info = self._registry.pop(self, None)
|
||||
if info and not self._shutdown:
|
||||
return info.func(*info.args, **(info.kwargs or {}))
|
||||
|
||||
def detach(self):
|
||||
"""If alive then mark as dead and return (obj, func, args, kwargs);
|
||||
otherwise return None"""
|
||||
info = self._registry.get(self)
|
||||
obj = info and info.weakref()
|
||||
if obj is not None and self._registry.pop(self, None):
|
||||
return (obj, info.func, info.args, info.kwargs or {})
|
||||
|
||||
def peek(self):
|
||||
"""If alive then return (obj, func, args, kwargs);
|
||||
otherwise return None"""
|
||||
info = self._registry.get(self)
|
||||
obj = info and info.weakref()
|
||||
if obj is not None:
|
||||
return (obj, info.func, info.args, info.kwargs or {})
|
||||
|
||||
@property
|
||||
def alive(self):
|
||||
"""Whether finalizer is alive"""
|
||||
return self in self._registry
|
||||
|
||||
@property
|
||||
def atexit(self):
|
||||
"""Whether finalizer should be called at exit"""
|
||||
info = self._registry.get(self)
|
||||
return bool(info) and info.atexit
|
||||
|
||||
@atexit.setter
|
||||
def atexit(self, value):
|
||||
info = self._registry.get(self)
|
||||
if info:
|
||||
info.atexit = bool(value)
|
||||
|
||||
def __repr__(self):
|
||||
info = self._registry.get(self)
|
||||
obj = info and info.weakref()
|
||||
if obj is None:
|
||||
return '<%s object at %#x; dead>' % (type(self).__name__, id(self))
|
||||
else:
|
||||
return '<%s object at %#x; for %r at %#x>' % \
|
||||
(type(self).__name__, id(self), type(obj).__name__, id(obj))
|
||||
|
||||
@classmethod
|
||||
def _select_for_exit(cls):
|
||||
# Return live finalizers marked for exit, oldest first
|
||||
L = [(f,i) for (f,i) in cls._registry.items() if i.atexit]
|
||||
L.sort(key=lambda item:item[1].index)
|
||||
return [f for (f,i) in L]
|
||||
|
||||
@classmethod
|
||||
def _exitfunc(cls):
|
||||
# At shutdown invoke finalizers for which atexit is true.
|
||||
# This is called once all other non-daemonic threads have been
|
||||
# joined.
|
||||
reenable_gc = False
|
||||
try:
|
||||
if cls._registry:
|
||||
import gc
|
||||
if gc.isenabled():
|
||||
reenable_gc = True
|
||||
gc.disable()
|
||||
pending = None
|
||||
while True:
|
||||
if pending is None or finalize._dirty:
|
||||
pending = cls._select_for_exit()
|
||||
finalize._dirty = False
|
||||
if not pending:
|
||||
break
|
||||
f = pending.pop()
|
||||
try:
|
||||
# gc is disabled, so (assuming no daemonic
|
||||
# threads) the following is the only line in
|
||||
# this function which might trigger creation
|
||||
# of a new finalizer
|
||||
f()
|
||||
except Exception:
|
||||
sys.excepthook(*sys.exc_info())
|
||||
assert f not in cls._registry
|
||||
finally:
|
||||
# prevent any more finalizers from executing during shutdown
|
||||
finalize._shutdown = True
|
||||
if reenable_gc:
|
||||
gc.enable()
|
||||
Loading…
Reference in New Issue