server.py 文件源码

def make_svg(self, request):
        try:
            parts = request.GET["fen"].replace("_", " ").split(" ", 1)
            board = chess.BaseBoard("/".join(parts[0].split("/")[0:8]))
        except KeyError:
            raise aiohttp.web.HTTPBadRequest(reason="fen required")
        except ValueError:
            raise aiohttp.web.HTTPBadRequest(reason="invalid fen")

        try:
            size = min(max(int(request.GET.get("size", 360)), 16), 1024)
        except ValueError:
            raise aiohttp.web.HTTPBadRequest(reason="size is not a number")

        try:
            uci = request.GET.get("lastMove") or request.GET["lastmove"]
            lastmove = chess.Move.from_uci(uci)
        except KeyError:
            lastmove = None
        except ValueError:
            raise aiohttp.web.HTTPBadRequest(reason="lastMove is not a valid uci move")

        try:
            check = chess.SQUARE_NAMES.index(request.GET["check"])
        except KeyError:
            check = None
        except ValueError:
            raise aiohttp.web.HTTPBadRequest(reason="check is not a valid square name")

        try:
            arrows = [arrow(s.strip()) for s in request.GET.get("arrows", "").split(",") if s.strip()]
        except ValueError:
            raise aiohttp.web.HTTPBadRequest(reason="invalid arrow")

        flipped = request.GET.get("orientation", "white") == "black"

        return chess.svg.board(board, coordinates=False, flipped=flipped, lastmove=lastmove, check=check, arrows=arrows, size=size, style=self.css)