103 lines
2.9 KiB
Python
103 lines
2.9 KiB
Python
__slots__ = ('method', 'path', 'handler', '_pattern_parts')
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def __init__(self, method: str, path: str, handler: Callable):
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self.method = method
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self.path = path
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self.handler = handler
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self._pattern_parts = path.strip("/").split("/") if ":" in path else None
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@lru_cache(maxsize=1024)
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def match_path(pattern: str, path: str) -> bool:
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if pattern == path:
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return True
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pattern_parts = _get_pattern_parts(pattern)
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if pattern_parts is None:
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return False
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path_parts = path.strip("/").split("/")
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last_pattern = pattern_parts[-1]
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is_wildcard = _is_wildcard_param(last_pattern)
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if is_wildcard and len(path_parts) >= len(pattern_parts):
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for i, p in enumerate(pattern_parts[:-1]):
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if i >= len(path_parts):
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return False
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if not p.startswith(":") and p != path_parts[i]:
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return False
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return True
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if len(pattern_parts) != len(path_parts):
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return False
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for p, a in zip(pattern_parts, path_parts):
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if not p.startswith(":") and p != a:
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return False
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return True
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def _is_wildcard_param(param: str) -> bool:
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if ":" not in pattern:
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return None
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return pattern.strip("/").split("/")
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@lru_cache(maxsize=1024)
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def extract_path_params(pattern: str, path: str) -> dict[str, str]:
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params = {}
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pattern_parts = _get_pattern_parts(pattern)
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if pattern_parts is None:
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return params
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path_parts = path.strip("/").split("/")
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last_pattern = pattern_parts[-1]
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is_wildcard = _is_wildcard_param(last_pattern)
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use_wildcard = is_wildcard and len(path_parts) > len(pattern_parts)
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if use_wildcard:
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parts_to_process = pattern_parts[:-1]
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else:
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parts_to_process = pattern_parts
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for i, p in enumerate(parts_to_process):
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if i < len(path_parts) and p.startswith(":"):
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param_name = p[1:] params[param_name] = path_parts[i]
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if use_wildcard:
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param_name = last_pattern[1:]
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remaining = "/".join(path_parts[len(pattern_parts) - 1:])
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params[param_name] = remaining
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return params
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class BaseRouter:
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def __init__(self):
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self.routes: list[BaseRoute] = []
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def add(self, method: str, path: str, handler: Callable):
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self.add("GET", path, handler)
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def post(self, path: str, handler: Callable):
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self.add("PUT", path, handler)
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def delete(self, path: str, handler: Callable):
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Args:
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method: HTTP 方法
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path: 请求路径
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Returns:
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(路由，路径参数) 或 None
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for route in self.routes:
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if route.method == method and match_path(route.path, path):
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params = extract_path_params(route.path, path)
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return route, params
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return None
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