Mermaid MCP Server

from __future__ import annotations import re from typing import Tuple from core.errors import ValidationError _REPO_URL_RE = re.compile(r"^https?://github\.com/([^/]+)/([^/]+?)(?:\.git)?/?$") def parse_repo_url(repo_url: str) -> Tuple[str, str]: raw = (repo_url or "").strip() m = _REPO_URL_RE.match(raw) if not m: raise ValidationError("Invalid GitHub repository URL") return m.group(1), m.group(2) def normalize_ref(ref: str) -> str: ref_clean = (ref or "main").strip() if not ref_clean: raise ValidationError("ref must be non-empty") return ref_clean def normalize_path(path: str) -> str: path_clean = (path or "").strip().lstrip("/") if not path_clean: raise ValidationError("path must be non-empty") return path_clean def normalize_max_chars(max_chars: int) -> int: n = int(max_chars) if n <= 0: raise ValidationError("max_chars must be positive") return n