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133 lines
4.6 KiB
Python
133 lines
4.6 KiB
Python
# Copyright (c) 2018 gevent community
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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from __future__ import absolute_import, print_function, division
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import importlib
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import os.path
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import warnings
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import gevent
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from . import sysinfo
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from . import util
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OPTIONAL_MODULES = frozenset({
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## Resolvers.
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# ares might not be built
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'gevent.resolver_ares',
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'gevent.resolver.ares',
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# dnspython might not be installed
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'gevent.resolver.dnspython',
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## Backends
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'gevent.libev',
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'gevent.libev.watcher',
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'gevent.libuv.loop',
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'gevent.libuv.watcher',
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})
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EXCLUDED_MODULES = frozenset({
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'__init__',
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'core',
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'ares',
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'_util',
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'_semaphore',
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'corecffi',
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'_corecffi',
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'_corecffi_build',
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})
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def walk_modules(
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basedir=None,
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modpath=None,
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include_so=False,
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recursive=False,
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check_optional=True,
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include_tests=False,
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optional_modules=OPTIONAL_MODULES,
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excluded_modules=EXCLUDED_MODULES,
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):
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"""
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Find gevent modules, yielding tuples of ``(path, importable_module_name)``.
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:keyword bool check_optional: If true (the default), then if we discover a
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module that is known to be optional on this system (such as a backend),
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we will attempt to import it; if the import fails, it will not be returned.
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If false, then we will not make such an attempt, the caller will need to be prepared
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for an `ImportError`; the caller can examine *optional_modules* against
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the yielded *importable_module_name*.
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"""
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# pylint:disable=too-many-branches
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if sysinfo.PYPY:
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include_so = False
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if basedir is None:
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basedir = os.path.dirname(gevent.__file__)
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if modpath is None:
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modpath = 'gevent.'
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else:
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if modpath is None:
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modpath = ''
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for fn in sorted(os.listdir(basedir)):
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path = os.path.join(basedir, fn)
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if os.path.isdir(path):
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if not recursive:
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continue
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if not include_tests and fn in ['testing', 'tests']:
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continue
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pkg_init = os.path.join(path, '__init__.py')
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if os.path.exists(pkg_init):
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yield pkg_init, modpath + fn
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for p, m in walk_modules(
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path, modpath + fn + ".",
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include_so=include_so,
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recursive=recursive,
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check_optional=check_optional,
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include_tests=include_tests,
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optional_modules=optional_modules,
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excluded_modules=excluded_modules,
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):
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yield p, m
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continue
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if fn.endswith('.py'):
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x = fn[:-3]
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if x.endswith('_d'):
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x = x[:-2]
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if x in excluded_modules:
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continue
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modname = modpath + x
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if check_optional and modname in optional_modules:
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try:
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with warnings.catch_warnings():
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warnings.simplefilter('ignore', DeprecationWarning)
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importlib.import_module(modname)
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except ImportError:
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util.debug("Unable to import optional module %s", modname)
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continue
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yield path, modname
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elif include_so and fn.endswith(sysinfo.SHARED_OBJECT_EXTENSION):
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if '.pypy-' in fn:
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continue
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if fn.endswith('_d.so'):
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yield path, modpath + fn[:-5]
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else:
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yield path, modpath + fn[:-3]
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