DeDRM_tools/DeDRM_plugin/utilities.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

from calibre_plugins.dedrm.ignoblekeygen import generate_key

__license__ = 'GPL v3'

DETAILED_MESSAGE = \
'You have personal information stored in this plugin\'s customization '+ \
'string from a previous version of this plugin.\n\n'+ \
'This new version of the plugin can convert that info '+ \
'into key data that the new plugin can then use (which doesn\'t '+ \
'require personal information to be stored/displayed in an insecure '+ \
'manner like the old plugin did).\n\nIf you choose NOT to migrate this data at this time '+ \
'you will be prompted to save that personal data to a file elsewhere; and you\'ll have '+ \
'to manually re-configure this plugin with your information.\n\nEither way... ' + \
'this new version of the plugin will not be responsible for storing that personal '+ \
'info in plain sight any longer.'

def uStrCmp (s1, s2, caseless=False):
    import unicodedata as ud
    str1 = s1 if isinstance(s1, unicode) else s1.decode('utf-8')
    str2 = s2 if isinstance(s2, unicode) else s2.decode('utf-8')
    if caseless:
        return ud.normalize('NFC', str1.lower()) == ud.normalize('NFC', str2.lower())
    else:
        return ud.normalize('NFC', str1) == ud.normalize('NFC', str2)

def parseCustString(keystuff):
    userkeys = []
    ar = keystuff.split(':')
    for i in ar:
        try:
            name, ccn = i.split(',')
            # Generate Barnes & Noble EPUB user key from name and credit card number.
            userkeys.append(generate_key(name, ccn))
        except:
            pass
    return userkeys