84 lines
2.8 KiB
Python
84 lines
2.8 KiB
Python
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from abc import ABC, abstractmethod
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from maze_model import Maze
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class MazeBuilder(ABC):
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@abstractmethod
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def build_from_file(self, filename: str) -> Maze:
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pass
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@abstractmethod
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def build_from_string(self, content: str) -> Maze:
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pass
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class TextFileMazeBuilder(MazeBuilder):
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def __init__(self):
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self._maze = None
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self._lines = []
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self._start_found = False
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self._exit_found = False
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def build_from_file(self, filename: str) -> Maze:
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try:
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with open(filename, 'r', encoding='utf-8') as file:
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content = file.read()
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return self.build_from_string(content)
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except FileNotFoundError:
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raise FileNotFoundError(f"Файл не найден: {filename}")
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def build_from_string(self, content: str) -> Maze:
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self._reset()
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self._lines = [line.rstrip('\n\r') for line in content.split('\n')]
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while self._lines and not self._lines[-1].strip():
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self._lines.pop()
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if not self._lines:
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raise ValueError("Пустой файл лабиринта")
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height = len(self._lines)
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width = max(len(line) for line in self._lines)
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for i, line in enumerate(self._lines):
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if len(line) != width:
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self._lines[i] = line.ljust(width)
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self._maze = Maze(width, height)
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for y, line in enumerate(self._lines):
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for x, char in enumerate(line):
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self._parse_cell(x, y, char)
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self._validate_maze()
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return self._maze
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def _reset(self):
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self._maze = None
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self._lines = []
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self._start_found = False
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self._exit_found = False
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def _parse_cell(self, x: int, y: int, char: str):
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cell = self._maze.get_cell(x, y)
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if char == '#':
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cell.is_wall = True
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elif char == 'S':
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if self._start_found:
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raise ValueError(f"Найден второй старт в ({x}, {y})")
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self._maze.set_start(x, y)
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self._start_found = True
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elif char == 'E':
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if self._exit_found:
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raise ValueError(f"Найден второй выход в ({x}, {y})")
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self._maze.set_exit(x, y)
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self._exit_found = True
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elif char == ' ':
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pass
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else:
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raise ValueError(f"Неизвестный символ '{char}' в ({x}, {y})")
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def _validate_maze(self):
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if not self._start_found:
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raise ValueError("В лабиринте не найден старт (символ 'S')")
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if not self._exit_found:
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raise ValueError("В лабиринте не найден выход (символ 'E')")
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