Current File : //opt/alt/python38/lib64/python3.8/site-packages/pycares/utils.py
try:
import idna as idna2008
except ImportError:
idna2008 = None
def ascii_bytes(data):
if isinstance(data, str):
return data.encode('ascii')
if isinstance(data, bytes):
return data
raise TypeError('only str (ascii encoding) and bytes are supported')
def maybe_str(data):
if isinstance(data, str):
return data
if isinstance(data, bytes):
try:
return data.decode('ascii')
except UnicodeDecodeError:
return data
raise TypeError('only str (ascii encoding) and bytes are supported')
def is_all_ascii(text):
for c in text:
if ord(c) > 0x7f:
return False
return True
def parse_name_idna2008(name):
parts = name.split('.')
r = []
for part in parts:
if is_all_ascii(part):
r.append(part.encode('ascii'))
else:
r.append(idna2008.encode(part))
return b'.'.join(r)
def parse_name(name):
if isinstance(name, str):
if is_all_ascii(name):
return name.encode('ascii')
if idna2008 is not None:
return parse_name_idna2008(name)
return name.encode('idna')
if isinstance(name, bytes):
return name
raise TypeError('only str and bytes are supported')
__all__ = ['ascii_bytes', 'maybe_str', 'parse_name']
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