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
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
#!/usr/bin/env python
# -*- coding: utf-8 -*-
'''
sets – The practical way to do set operations on sets of lines in the shell
Copyright © 2012, 2013 Mattias Andrée (maandree@member.fsf.org)
This program 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 3 of the License, or
(at your option) any later version.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
'''
import sys
def print(text = '', end = '\n'):
sys.stdout.buffer.write((str(text) + end).encode('utf-8'))
if len(sys.argv) != 1:
sys.stdout.buffer.flush()
exit(0)
elif sys.argv[1].startswith('-'):
if sys.argv[1] in ('-c', '--copying', '--copyright'):
print()
print()
print('sets – The practical way to do set operations on sets of lines in the shell')
print()
print('Copyright © 2012, 2013 Mattias Andrée (maandree@member.fsf.org)')
print()
print('This program is free software: you can redistribute it and/or modify')
print('it under the terms of the GNU General Public License as published by')
print('the Free Software Foundation, either version 3 of the License, or')
print('(at your option) any later version.')
print()
print('This program is distributed in the hope that it will be useful,')
print('but WITHOUT ANY WARRANTY; without even the implied warranty of')
print('MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the')
print('GNU General Public License for more details.')
print()
print('You should have received a copy of the GNU General Public License')
print('along with this program. If not, see <http://www.gnu.org/licenses/>.')
print()
print()
elif sys.argv[1] in ('-w', '--warranty'):
print()
print()
print('This program is distributed in the hope that it will be useful,')
print('but WITHOUT ANY WARRANTY; without even the implied warranty of')
print('MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the')
print('GNU General Public License for more details.')
print()
print()
else:
;
sys.stdout.buffer.flush()
exit(0)
class Set():
def __init__(self):
self.inv = False
self.elems = set()
def __and__(x, y):
if x.inv and y.inv:
return ~(~x | ~y)
elif y.inv:
return x - ~y
elif x.inv:
return y - ~x
else:
rc = Set()
for e in x.elems:
if e in y.elems:
rc.elems.add(e)
return rc
def __or__(x, y):
if x.inv and y.inv:
return ~(~x & ~y)
elif y.inv:
return x | (U - ~y)
elif x.inv:
return y | (U - ~x)
else:
rc = Set()
for e in x.elems:
rc.elems.add(e)
for e in y.elems:
if e not in rc.elems:
rc.elems.add(e)
return rc
def __xor__(x, y):
return (x | y) - (x & y)
def __sub__(x, y):
if x.inv and y.inv:
return ~y - ~x
elif x.inv:
return ~(~x | y)
else:
rc = Set()
for e in x.elems:
if (e in y.elems) == y.inv:
rc.elems.add(e)
return rc
def __invert__(x):
rc = Set()
rc.elems = x.elems
rc.inv = not x.inv
return rc
sets = [Set()]
next = Set()
U = Set()
try:
while True:
e = input()
if len(e) == 0:
if len(next.elems) > 0:
sets.append(next)
next = Set()
else:
if e not in next.elems:
next.elems.add(e)
if e not in U.elems:
U.elems.add(e)
except:
pass
if len(next.elems) > 0:
sets.append(next)
formula = sys.argv[1]
formula = formula.replace('\\', '-').replace('*', '&').replace('+', '|')
formula = formula.replace('C', '~').replace('!', '~').replace('¬', '~')
formula = formula.replace('∁', '~').replace('∅', '0').replace('∆', '^')
formula = formula.replace('∧', '&').replace('∨', '|').replace('∩', '&')
formula = formula.replace('∪', '|').replace('⊗', '^').replace('⊻', '^')
formula = formula.replace('⋀', '&').replace('⋁', '|').replace('⋂', '&')
formula = formula.replace('⋃', '|').replace('Ω', 'U').replace('Ω', 'U')
formula = formula.replace('⊕', '^').replace('𝓤', 'U').replace('↛', '-')
for i in range(0, 10):
formula = formula.replace('%i' % i, 'sets[%i]' % i)
formula = formula.replace(']sets[', '')
rc = eval(formula)
if rc.inv:
rc = U - ~rc
for e in rc.elems:
print(e)
sys.stdout.buffer.flush()
|
