mirror of
https://github.com/jbowdre/phpIPAM-for-vRA8.git
synced 2024-11-27 01:12:19 +00:00
98 lines
2.1 KiB
Python
98 lines
2.1 KiB
Python
import tempfile
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import os
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import shutil
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import sys
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import contextlib
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import site
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import io
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import pkg_resources
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@contextlib.contextmanager
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def tempdir(cd=lambda dir: None, **kwargs):
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temp_dir = tempfile.mkdtemp(**kwargs)
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orig_dir = os.getcwd()
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try:
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cd(temp_dir)
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yield temp_dir
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finally:
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cd(orig_dir)
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shutil.rmtree(temp_dir)
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@contextlib.contextmanager
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def environment(**replacements):
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"""
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In a context, patch the environment with replacements. Pass None values
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to clear the values.
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"""
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saved = dict(
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(key, os.environ[key])
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for key in replacements
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if key in os.environ
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)
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# remove values that are null
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remove = (key for (key, value) in replacements.items() if value is None)
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for key in list(remove):
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os.environ.pop(key, None)
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replacements.pop(key)
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os.environ.update(replacements)
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try:
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yield saved
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finally:
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for key in replacements:
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os.environ.pop(key, None)
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os.environ.update(saved)
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@contextlib.contextmanager
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def quiet():
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"""
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Redirect stdout/stderr to StringIO objects to prevent console output from
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distutils commands.
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"""
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old_stdout = sys.stdout
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old_stderr = sys.stderr
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new_stdout = sys.stdout = io.StringIO()
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new_stderr = sys.stderr = io.StringIO()
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try:
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yield new_stdout, new_stderr
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finally:
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new_stdout.seek(0)
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new_stderr.seek(0)
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sys.stdout = old_stdout
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sys.stderr = old_stderr
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@contextlib.contextmanager
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def save_user_site_setting():
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saved = site.ENABLE_USER_SITE
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try:
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yield saved
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finally:
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site.ENABLE_USER_SITE = saved
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@contextlib.contextmanager
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def save_pkg_resources_state():
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pr_state = pkg_resources.__getstate__()
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# also save sys.path
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sys_path = sys.path[:]
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try:
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yield pr_state, sys_path
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finally:
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sys.path[:] = sys_path
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pkg_resources.__setstate__(pr_state)
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@contextlib.contextmanager
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def suppress_exceptions(*excs):
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try:
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yield
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except excs:
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pass
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