python_koans / python2 / libs / colorama / winterm.py

from . import win32


# from wincon.h
class WinColor(object):
    BLACK   = 0
    BLUE    = 1
    GREEN   = 2
    CYAN    = 3
    RED     = 4
    MAGENTA = 5
    YELLOW  = 6
    GREY    = 7

# from wincon.h
class WinStyle(object):
    NORMAL = 0x00 # dim text, dim background
    BRIGHT = 0x08 # bright text, dim background


class WinTerm(object):

    def __init__(self):
        self._default = \
            win32.GetConsoleScreenBufferInfo(win32.STDOUT).wAttributes
        self.set_attrs(self._default)
        self._default_fore = self._fore
        self._default_back = self._back
        self._default_style = self._style

    def get_attrs(self):
        return self._fore + self._back * 16 + self._style

    def set_attrs(self, value):
        self._fore = value & 7
        self._back = (value >> 4) & 7
        self._style = value & WinStyle.BRIGHT

    def reset_all(self, on_stderr=None):
        self.set_attrs(self._default)
        self.set_console(attrs=self._default)

    def fore(self, fore=None, on_stderr=False):
        if fore is None:
            fore = self._default_fore
        self._fore = fore
        self.set_console(on_stderr=on_stderr)

    def back(self, back=None, on_stderr=False):
        if back is None:
            back = self._default_back
        self._back = back
        self.set_console(on_stderr=on_stderr)

    def style(self, style=None, on_stderr=False):
        if style is None:
            style = self._default_style
        self._style = style
        self.set_console(on_stderr=on_stderr)

    def set_console(self, attrs=None, on_stderr=False):
        if attrs is None:
            attrs = self.get_attrs()
        handle = win32.STDOUT
        if on_stderr:
            handle = win32.STDERR
        win32.SetConsoleTextAttribute(handle, attrs)
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