/usr/lib/python3/dist-packages/pybtex/io.py is in python3-pybtex 0.21-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 | # Copyright (c) 2006-2017 Andrey Golovigin
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
"""Unicode-aware IO routines."""
import io
import sys
from os import path, environ
from pybtex.exceptions import PybtexError
from pybtex.kpathsea import kpsewhich
def get_default_encoding():
return 'UTF-8'
def get_stream_encoding(stream):
stream_encoding = getattr(stream, 'encoding', None)
return stream_encoding or get_default_encoding()
def _open_existing(opener, filename, mode, locate, **kwargs):
if not path.isfile(filename):
found = locate(filename)
if found:
filename = found
return opener(filename, mode, **kwargs)
def _open_or_create(opener, filename, mode, environ, **kwargs):
try:
return opener(filename, mode, **kwargs)
except EnvironmentError as error:
if 'TEXMFOUTPUT' in environ:
new_filename = path.join(environ['TEXMFOUTPUT'], filename)
try:
return opener(new_filename, mode, **kwargs)
except EnvironmentError:
pass
raise error
def _open(opener, filename_or_file, mode, **kwargs):
if hasattr(filename_or_file, 'read') and hasattr(filename_or_file, 'close'):
return filename_or_file
else:
filename = filename_or_file
write_mode = 'w' in mode
try:
if write_mode:
return _open_or_create(opener, filename, mode, environ, **kwargs)
else:
return _open_existing(opener, filename, mode, locate=kpsewhich, **kwargs)
except EnvironmentError as error:
raise PybtexError("unable to open %s. %s" % (filename, error.strerror))
def open_raw(filename, mode='rb', encoding=None):
return _open(io.open, filename, mode)
def open_unicode(filename, mode='r', encoding=None):
if encoding is None:
encoding = get_default_encoding()
return _open(io.open, filename, mode, encoding=encoding)
def reader(stream, encoding=None, errors='strict'):
if encoding is None:
encoding = get_stream_encoding(stream)
return io.TextIOWrapper(stream, encoding=encoding, errors=errors)
stdout = sys.stdout
stderr = sys.stderr
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