Current File : //lib/python3/dist-packages/click/_unicodefun.py
import codecs
import os
from gettext import gettext as _
def _verify_python_env() -> None:
"""Ensures that the environment is good for Unicode."""
try:
from locale import getpreferredencoding
fs_enc = codecs.lookup(getpreferredencoding()).name
except Exception:
fs_enc = "ascii"
if fs_enc != "ascii":
return
extra = [
_(
"Click will abort further execution because Python was"
" configured to use ASCII as encoding for the environment."
" Consult https://click.palletsprojects.com/unicode-support/"
" for mitigation steps."
)
]
if os.name == "posix":
import subprocess
try:
rv = subprocess.Popen(
["locale", "-a"],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
encoding="ascii",
errors="replace",
).communicate()[0]
except OSError:
rv = ""
good_locales = set()
has_c_utf8 = False
for line in rv.splitlines():
locale = line.strip()
if locale.lower().endswith((".utf-8", ".utf8")):
good_locales.add(locale)
if locale.lower() in ("c.utf8", "c.utf-8"):
has_c_utf8 = True
if not good_locales:
extra.append(
_(
"Additional information: on this system no suitable"
" UTF-8 locales were discovered. This most likely"
" requires resolving by reconfiguring the locale"
" system."
)
)
elif has_c_utf8:
extra.append(
_(
"This system supports the C.UTF-8 locale which is"
" recommended. You might be able to resolve your"
" issue by exporting the following environment"
" variables:"
)
)
extra.append(" export LC_ALL=C.UTF-8\n export LANG=C.UTF-8")
else:
extra.append(
_(
"This system lists some UTF-8 supporting locales"
" that you can pick from. The following suitable"
" locales were discovered: {locales}"
).format(locales=", ".join(sorted(good_locales)))
)
bad_locale = None
for env_locale in os.environ.get("LC_ALL"), os.environ.get("LANG"):
if env_locale and env_locale.lower().endswith((".utf-8", ".utf8")):
bad_locale = env_locale
if env_locale is not None:
break
if bad_locale is not None:
extra.append(
_(
"Click discovered that you exported a UTF-8 locale"
" but the locale system could not pick up from it"
" because it does not exist. The exported locale is"
" {locale!r} but it is not supported."
).format(locale=bad_locale)
)
raise RuntimeError("\n\n".join(extra))
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