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98 lines
2.4 KiB
Python
98 lines
2.4 KiB
Python
"""Python bindings for 0MQ"""
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# Copyright (C) PyZMQ Developers
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# Distributed under the terms of the Modified BSD License.
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from __future__ import annotations
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import os
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import sys
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from contextlib import contextmanager
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@contextmanager
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def _libs_on_path():
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"""context manager for libs directory on $PATH
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Works around mysterious issue where os.add_dll_directory
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does not resolve imports (conda-forge Python >= 3.8)
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"""
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if not sys.platform.startswith("win"):
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yield
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return
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libs_dir = os.path.abspath(
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os.path.join(
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os.path.dirname(__file__),
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os.pardir,
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"pyzmq.libs",
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)
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)
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if not os.path.exists(libs_dir):
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# no bundled libs
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yield
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return
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path_before = os.environ.get("PATH")
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try:
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os.environ["PATH"] = os.pathsep.join([path_before or "", libs_dir])
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yield
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finally:
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if path_before is None:
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os.environ.pop("PATH")
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else:
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os.environ["PATH"] = path_before
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# zmq top-level imports
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# workaround for Windows
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with _libs_on_path():
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from zmq import backend
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from . import constants # noqa
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from .constants import * # noqa
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from zmq.backend import * # noqa
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from zmq import sugar
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from zmq.sugar import * # noqa
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def get_includes():
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"""Return a list of directories to include for linking against pyzmq with cython."""
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from os.path import abspath, dirname, exists, join, pardir
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base = dirname(__file__)
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parent = abspath(join(base, pardir))
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includes = [parent] + [join(parent, base, subdir) for subdir in ('utils',)]
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if exists(join(parent, base, 'include')):
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includes.append(join(parent, base, 'include'))
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return includes
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def get_library_dirs():
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"""Return a list of directories used to link against pyzmq's bundled libzmq."""
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from os.path import abspath, dirname, join, pardir
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base = dirname(__file__)
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parent = abspath(join(base, pardir))
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return [join(parent, base)]
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COPY_THRESHOLD = 65536
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# zmq.DRAFT_API represents _both_ the current runtime-loaded libzmq
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# and pyzmq were built with drafts,
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# which is required for pyzmq draft support
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DRAFT_API: bool = backend.has('draft') and backend.PYZMQ_DRAFT_API
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__all__ = (
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[
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'get_includes',
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'COPY_THRESHOLD',
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'DRAFT_API',
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]
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+ constants.__all__
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+ sugar.__all__
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+ backend.__all__
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)
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