terminalwriter.py 文件源码

def ansi_print(text, esc, file=None, newline=True, flush=False):
    if file is None:
        file = sys.stderr
    text = text.rstrip()
    if esc and not isinstance(esc, tuple):
        esc = (esc,)
    if esc and sys.platform != "win32" and file.isatty():
        text = (''.join(['\x1b[%sm' % cod for cod in esc])  +
                text +
                '\x1b[0m')     # ANSI color code "reset"
    if newline:
        text += '\n'

    if esc and win32_and_ctypes and file.isatty():
        if 1 in esc:
            bold = True
            esc = tuple([x for x in esc if x != 1])
        else:
            bold = False
        esctable = {()   : FOREGROUND_WHITE,                 # normal
                    (31,): FOREGROUND_RED,                   # red
                    (32,): FOREGROUND_GREEN,                 # green
                    (33,): FOREGROUND_GREEN|FOREGROUND_RED,  # yellow
                    (34,): FOREGROUND_BLUE,                  # blue
                    (35,): FOREGROUND_BLUE|FOREGROUND_RED,   # purple
                    (36,): FOREGROUND_BLUE|FOREGROUND_GREEN, # cyan
                    (37,): FOREGROUND_WHITE,                 # white
                    (39,): FOREGROUND_WHITE,                 # reset
                    }
        attr = esctable.get(esc, FOREGROUND_WHITE)
        if bold:
            attr |= FOREGROUND_INTENSITY
        STD_OUTPUT_HANDLE = -11
        STD_ERROR_HANDLE = -12
        if file is sys.stderr:
            handle = GetStdHandle(STD_ERROR_HANDLE)
        else:
            handle = GetStdHandle(STD_OUTPUT_HANDLE)
        oldcolors = GetConsoleInfo(handle).wAttributes
        attr |= (oldcolors & 0x0f0)
        SetConsoleTextAttribute(handle, attr)
        while len(text) > 32768:
            file.write(text[:32768])
            text = text[32768:]
        if text:
            file.write(text)
        SetConsoleTextAttribute(handle, oldcolors)
    else:
        file.write(text)

    if flush:
        file.flush()