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
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
from typing import Self
from hashlib import md5
ADJ = [(x, y) for x in range(-1, 2) for y in range(-1, 2) if x != 0 or y != 0]
ORTH = [dir for dir in ADJ if dir[0] == 0 or dir[1] == 0]
VALID_LABEL = set("abcdefghijklmnopqrstuv.")
VALID_LOCK = set("0123.")
VALID_ANSWER = set("0123")
def value(grid, x: int, y: int) -> int | None:
side_length = int(len(grid) ** 0.5)
if not 0 <= x < side_length:
return None
if not 0 <= y < side_length:
return None
return grid[y * side_length + x]
def adj(grid, x: int, y: int, orth=False, center=False) -> list[int]:
base = [value(grid, x + dx, y + dy) for dx, dy in (ORTH if orth else ADJ)]
if center:
base.append(value(grid, x, y))
return [v for v in base if v is not None]
class Shape:
def __init__(self, grid, x: int, y: int) -> None:
self.value = value(grid, x, y)
proc = [(x, y)]
seen = set(proc)
while proc:
x, y = proc.pop()
for dx, dy in ORTH:
possible = (x + dx, y + dy)
if value(grid, possible[0], possible[1]) == self.value:
if possible not in seen:
seen.add(possible)
proc.append(possible)
self.size = len(seen)
left = min([pt[0] for pt in seen])
right = max([pt[0] for pt in seen])
top = min([pt[1] for pt in seen])
bottom = max([pt[1] for pt in seen])
output = []
for y in range(top, bottom + 1):
row = []
for x in range(left, right + 1):
row.append("X" if (x, y) in seen else ".")
output.append("".join(row))
self.shape = "\n".join(output)
self.points = seen
class Captcha:
def __init__(self, size: int) -> None:
tile_count = size**2
self.size = size
self.label: list[str | None] = [None] * tile_count
self.lock: list[int | None] = [None] * tile_count
self.reload = False
def __members(self) -> tuple[int, list[str | None], list[int | None]]:
return (self.size, self.label, self.lock)
def __eq__(self, other) -> bool:
if not isinstance(other, Captcha):
return False
return self.__members() == other.__members()
def __hash__(self) -> int:
return hash(self.__members())
@classmethod
def from_string(
cls, size: int, label: str, lock: str, reload: bool = False
) -> Self:
result = cls(size)
result.label = [char if char != "." else None for char in label]
result.lock = [int(char) if char != "." else None for char in lock]
result.reload = reload
result.recalc_id()
return result
def make_label(self) -> str:
return "".join(char if char else "." for char in self.label)
def make_lock(self) -> str:
return "".join(str(char) if char is not None else "." for char in self.lock)
def recalc_id(self) -> None:
self.id = md5(
(self.make_label() + self.make_lock()).encode("utf-8")
).hexdigest()
def validate(self, answer_string: str) -> bool:
# Ensure answer is of right length
answer = [int(char) for char in answer_string]
if len(answer) != len(self.label):
return False
# Ensure lock is correct
for ans, lk in zip(answer, self.lock):
if lk is not None:
if ans != lk:
return False
# Ensure label is correct
color_match = None
shape_match_m = None
shape_match_n = None
for x in range(0, self.size):
for y in range(0, self.size):
match value(self.label, x, y):
case "a":
if Shape(answer, x, y).size != 1:
return False
case "b":
if Shape(answer, x, y).size != 2:
return False
case "c":
if Shape(answer, x, y).size != 3:
return False
case "d":
if Shape(answer, x, y).size != 4:
return False
case "e":
near = adj(answer, x, y, True, False)
if len(near) != len(set(near)):
return False
case "m":
shape = Shape(answer, x, y)
if shape_match_m:
if shape_match_m != shape.shape:
return False
else:
shape_match_m = shape.shape
if shape_match_m == shape_match_n:
return False
case "n":
shape = Shape(answer, x, y)
if shape_match_n:
if shape_match_n != shape.shape:
return False
else:
shape_match_n = shape.shape
if shape_match_m == shape_match_n:
return False
case "r":
color = value(answer, x, y)
if color_match:
if color_match != color:
return False
else:
color_match = color
case "v":
if len(set(adj(answer, x, y, True, True))) != 1:
return False
case _:
pass
return True
@classmethod
def safe_validate(
cls, size: str, label: str, lock: str, answer: str
) -> Captcha | None:
try:
int_size = int(size)
except ValueError:
return None
tile_count = int_size**2
if (
len(label) != tile_count
or len(lock) != tile_count
or len(answer) != tile_count
or any(char not in VALID_LABEL for char in label)
or any(char not in VALID_LOCK for char in lock)
or any(char not in VALID_ANSWER for char in answer)
):
return None
captcha = Captcha.from_string(int_size, label, lock)
if captcha.validate(answer):
return captcha
return None
if __name__ == "__main__":
test = Captcha.from_string(
5, "m...cena....m...ebneb.clm", "........................."
)
print(test.validate("0111001010203101231212212"))
|
