DeDRM_tools/DeDRM_plugin/utilities.py

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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
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#@@CALIBRE_COMPAT_CODE@@
import sys
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__license__ = 'GPL v3'
def uStrCmp (s1, s2, caseless=False):
import unicodedata as ud
if sys.version_info[0] == 2:
str1 = s1 if isinstance(s1, unicode) else unicode(s1)
str2 = s2 if isinstance(s2, unicode) else unicode(s2)
else:
str1 = s1 if isinstance(s1, str) else str(s1)
str2 = s2 if isinstance(s2, str) else str(s2)
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if caseless:
return ud.normalize('NFC', str1.lower()) == ud.normalize('NFC', str2.lower())
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else:
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return ud.normalize('NFC', str1) == ud.normalize('NFC', str2)
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# Wrap a stream so that output gets flushed immediately
# and also make sure that any unicode strings get safely
# encoded using "replace" before writing them.
class SafeUnbuffered:
def __init__(self, stream):
self.stream = stream
self.encoding = stream.encoding
if self.encoding == None:
self.encoding = "utf-8"
def write(self, data):
if isinstance(data,str) or isinstance(data,unicode):
# str for Python3, unicode for Python2
data = data.encode(self.encoding,"replace")
try:
buffer = getattr(self.stream, 'buffer', self.stream)
# self.stream.buffer for Python3, self.stream for Python2
buffer.write(data)
buffer.flush()
except:
# We can do nothing if a write fails
raise
def __getattr__(self, attr):
return getattr(self.stream, attr)