Python TextIO.readline方法代码示例

# 需要导入模块: from typing import TextIO [as 别名]
# 或者: from typing.TextIO import readline [as 别名]
def pat_dependency(src_path: str, src_file: TextIO) -> str:
  '''
  Return a list of dependencies.
  A .pat file always has a single dependency: the source file it patches.
  '''
  version_line = src_file.readline()
  orig_line = src_file.readline()
  orig_path = orig_line.strip()
  if not orig_path:
    failF('pat error: {}:2:1: line specifying original path is missing or empty.', src_path)
  return orig_path

# 需要导入模块: from typing import TextIO [as 别名]
# 或者: from typing.TextIO import readline [as 别名]
def output_file(out: TextIO, fin: TextIO, keep_license: bool) -> None:
	skip = LICENSE_LINES
	if keep_license: skip = 0
	while True:
		line = fin.readline()
		if not line:
			break
		if skip:
			skip -= 1
			continue
		out.write(line)

# 需要导入模块: from typing import TextIO [as 别名]
# 或者: from typing.TextIO import readline [as 别名]
 def stuff(a: TextIO) -> str:
     return a.readline()

# 需要导入模块: from typing import TextIO [as 别名]
# 或者: from typing.TextIO import readline [as 别名]
def read_game(handle: TextIO, *, Visitor: Callable[[], BaseVisitor[ResultT]] = GameBuilder) -> Optional[ResultT]:
    """
    Reads a game from a file opened in text mode.

    >>> import chess.pgn
    >>>
    >>> pgn = open("data/pgn/kasparov-deep-blue-1997.pgn")
    >>>
    >>> first_game = chess.pgn.read_game(pgn)
    >>> second_game = chess.pgn.read_game(pgn)
    >>>
    >>> first_game.headers["Event"]
    'IBM Man-Machine, New York USA'
    >>>
    >>> # Iterate through all moves and play them on a board.
    >>> board = first_game.board()
    >>> for move in first_game.mainline_moves():
    ...     board.push(move)
    ...
    >>> board
    Board('4r3/6P1/2p2P1k/1p6/pP2p1R1/P1B5/2P2K2/3r4 b - - 0 45')

    By using text mode, the parser does not need to handle encodings. It is the
    caller's responsibility to open the file with the correct encoding.
    PGN files are usually ASCII or UTF-8 encoded. So, the following should
    cover most relevant cases (ASCII, UTF-8, UTF-8 with BOM).

    >>> pgn = open("data/pgn/kasparov-deep-blue-1997.pgn", encoding="utf-8-sig")

    Use :class:`~io.StringIO` to parse games from a string.

    >>> import io
    >>>
    >>> pgn = io.StringIO("1. e4 e5 2. Nf3 *")
    >>> game = chess.pgn.read_game(pgn)

    The end of a game is determined by a completely blank line or the end of
    the file. (Of course, blank lines in comments are possible).

    According to the PGN standard, at least the usual 7 header tags are
    required for a valid game. This parser also handles games without any
    headers just fine.

    The parser is relatively forgiving when it comes to errors. It skips over
    tokens it can not parse. Any exceptions are logged and collected in
    :data:`Game.errors <chess.pgn.Game.errors>`. This behavior can be
    :func:`overriden <chess.pgn.GameBuilder.handle_error>`.

    Returns the parsed game or ``None`` if the end of file is reached.
    """
    visitor = Visitor()

    found_game = False
    skipping_game = False
    headers = None
    managed_headers = None

    # Ignore leading empty lines and comments.
    line = handle.readline().lstrip("\ufeff")
    while line.isspace() or line.startswith("%") or line.startswith(";"):
        line = handle.readline()

    # Parse game headers.
    while line:
        # Ignore comments.
        if line.startswith("%") or line.startswith(";"):
            line = handle.readline()
            continue

        # First token of the game.
        if not found_game:
            found_game = True
            skipping_game = visitor.begin_game() is SKIP
            if not skipping_game:
                managed_headers = visitor.begin_headers()
                if not isinstance(managed_headers, Headers):
                    managed_headers = None
                    headers = Headers({})

        if not line.startswith("["):
            break

        if not skipping_game:
            tag_match = TAG_REGEX.match(line)
            if tag_match:
                visitor.visit_header(tag_match.group(1), tag_match.group(2))
                if headers is not None:
                    headers[tag_match.group(1)] = tag_match.group(2)
            else:
                break

        line = handle.readline()

    if not found_game:
        return None

    if not skipping_game:
        skipping_game = visitor.end_headers() is SKIP

    # Ignore single empty line after headers.
#.........这里部分代码省略.........