73 lines
1.9 KiB
Python
73 lines
1.9 KiB
Python
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"""Show the position from an SGF file.
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This demonstrates the sgf and ascii_boards modules.
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"""
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import sys
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from optparse import OptionParser
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from gomill import ascii_boards
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from gomill import sgf
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from gomill import sgf_moves
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def show_sgf_file(pathname, move_number):
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f = open(pathname)
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sgf_src = f.read()
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f.close()
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try:
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sgf_game = sgf.Sgf_game.from_string(sgf_src)
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except ValueError:
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raise StandardError("bad sgf file")
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try:
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board, plays = sgf_moves.get_setup_and_moves(sgf_game)
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except ValueError, e:
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raise StandardError(str(e))
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if move_number is not None:
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move_number = max(0, move_number-1)
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plays = plays[:move_number]
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for colour, move in plays:
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if move is None:
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continue
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row, col = move
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try:
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board.play(row, col, colour)
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except ValueError:
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raise StandardError("illegal move in sgf file")
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print ascii_boards.render_board(board)
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print
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_description = """\
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Show the position from an SGF file. If a move number is specified, the position
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before that move is shown (this is to match the behaviour of GTP loadsgf).
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"""
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def main(argv):
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parser = OptionParser(usage="%prog <filename> [move number]",
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description=_description)
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opts, args = parser.parse_args(argv)
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if not args:
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parser.error("not enough arguments")
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pathname = args[0]
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if len(args) > 2:
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parser.error("too many arguments")
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if len(args) == 2:
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try:
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move_number = int(args[1])
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except ValueError:
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parser.error("invalid integer value: %s" % args[1])
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else:
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move_number = None
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try:
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show_sgf_file(pathname, move_number)
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except Exception, e:
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print >>sys.stderr, "show_sgf:", str(e)
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sys.exit(1)
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if __name__ == "__main__":
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main(sys.argv[1:])
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