# Copyright (C) 2008-2012 Chris Ball <cjb@laptop.org>
# Gianluca Montecchi <gian@grys.it>
# W. Trevor King <wking@drexel.edu>
#
# This file is part of Bugs Everywhere.
#
# Bugs Everywhere is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the Free
# Software Foundation, either version 2 of the License, or (at your option) any
# later version.
#
# Bugs Everywhere is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along with
# Bugs Everywhere. If not, see <http://www.gnu.org/licenses/>.
"""
Support input/output/filesystem encodings (e.g. UTF-8).
"""
import codecs
import locale
import os
import sys
import types
import libbe
if libbe.TESTING == True:
import doctest
ENCODING = os.environ.get('BE_ENCODING', None)
"override get_encoding() output"
INPUT_ENCODING = os.environ.get('BE_INPUT_ENCODING', None)
"override get_input_encoding() output"
OUTPUT_ENCODING = os.environ.get('BE_OUTPUT_ENCODING', None)
"override get_output_encoding() output"
def get_encoding():
"""
Guess a useful input/output/filesystem encoding... Maybe we need
seperate encodings for input/output and filesystem? Hmm...
"""
if ENCODING != None:
return ENCODING
encoding = locale.getpreferredencoding() or sys.getdefaultencoding()
return encoding
def get_input_encoding():
if INPUT_ENCODING != None:
return INPUT_ENCODING
return sys.__stdin__.encoding or get_encoding()
def get_output_encoding():
if OUTPUT_ENCODING != None:
return OUTPUT_ENCODING
return sys.__stdout__.encoding or get_encoding()
def get_text_file_encoding():
"""Return the encoding that should be used for file contents
"""
return get_encoding()
def get_argv_encoding():
return get_encoding()
def known_encoding(encoding):
"""
>>> known_encoding("highly-unlikely-encoding")
False
>>> known_encoding(get_encoding())
True
"""
try:
codecs.lookup(encoding)
return True
except LookupError:
return False
def get_file_contents(path, mode='r', encoding=None, decode=False):
if decode == True:
if encoding == None:
encoding = get_text_file_encoding()
f = codecs.open(path, mode, encoding)
else:
f = open(path, mode)
contents = f.read()
f.close()
return contents
def set_file_contents(path, contents, mode='w', encoding=None):
if type(contents) == types.UnicodeType:
if encoding == None:
encoding = get_text_file_encoding()
f = codecs.open(path, mode, encoding)
else:
f = open(path, mode)
f.write(contents)
f.close()
if libbe.TESTING == True:
suite = doctest.DocTestSuite()
