casa6

import sys

​

class TerminalController:

    """

    A class taken from epydoc that can be used to portably generate formatted

    output to a terminal.  See

    U{http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/475116} for

    documentation.  (This is a somewhat stripped-down version.)

    """

    BOL = ''             #: Move the cursor to the beginning of the line

    UP = ''              #: Move the cursor up one line

    DOWN = ''            #: Move the cursor down one line

    LEFT = ''            #: Move the cursor left one char

    RIGHT = ''           #: Move the cursor right one char

    CLEAR_EOL = ''       #: Clear to the end of the line.

    CLEAR_LINE = ''      #: Clear the current line; cursor to BOL.

    BOLD = ''            #: Turn on bold mode

    NORMAL = ''          #: Turn off all modes

    COLS = 80            #: Width of the terminal (default to 80)

    BLACK = BLUE = GREEN = CYAN = RED = MAGENTA = YELLOW = WHITE = ''

​

    _STRING_CAPABILITIES = """

    BOL=cr UP=cuu1 DOWN=cud1 LEFT=cub1 RIGHT=cuf1

    CLEAR_EOL=el BOLD=bold UNDERLINE=smul NORMAL=sgr0""".split()

    _COLORS = """BLACK BLUE GREEN CYAN RED MAGENTA YELLOW WHITE""".split()

    _ANSICOLORS = "BLACK RED GREEN YELLOW BLUE MAGENTA CYAN WHITE".split()

​

    #: If this is set to true, then new TerminalControllers will

    #: assume that the terminal is not capable of doing manipulation

    #: of any kind.

    FORCE_SIMPLE_TERM = False

​

    def __init__(self, term_stream=sys.stdout):

        # If the stream isn't a tty, then assume it has no capabilities.

        if not term_stream.isatty(): return

        if self.FORCE_SIMPLE_TERM: return

​

        # Curses isn't available on all platforms

        try: import curses

        except:

            # If it's not available, then try faking enough to get a

            # simple progress bar.

            self.BOL = '\r'

            self.CLEAR_LINE = '\r' + ' '*self.COLS + '\r'

​

        # Check the terminal type.  If we fail, then assume that the

        # terminal has no capabilities.

        try: curses.setupterm()

        except: return

​

        # Look up numeric capabilities.

        self.COLS = curses.tigetnum('cols')

​

        # Look up string capabilities.

        for capability in self._STRING_CAPABILITIES:

            (attrib, cap_name) = capability.split('=')

            setattr(self, attrib, self._tigetstr(cap_name) or '')

        if self.BOL and self.CLEAR_EOL:

            self.CLEAR_LINE = self.BOL+self.CLEAR_EOL

​

        # Colors

        set_fg = self._tigetstr('setf')

        if set_fg: