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- # Copyright Jonathan Hartley 2013. BSD 3-Clause license, see LICENSE file.
- '''
- This module generates ANSI character codes to printing colors to terminals.
- See: http://en.wikipedia.org/wiki/ANSI_escape_code
- '''
- CSI = '\033['
- OSC = '\033]'
- BEL = '\a'
- def code_to_chars(code):
- return CSI + str(code) + 'm'
- def set_title(title):
- return OSC + '2;' + title + BEL
- def clear_screen(mode=2):
- return CSI + str(mode) + 'J'
- def clear_line(mode=2):
- return CSI + str(mode) + 'K'
- class AnsiCodes(object):
- def __init__(self):
- # the subclasses declare class attributes which are numbers.
- # Upon instantiation we define instance attributes, which are the same
- # as the class attributes but wrapped with the ANSI escape sequence
- for name in dir(self):
- if not name.startswith('_'):
- value = getattr(self, name)
- setattr(self, name, code_to_chars(value))
- class AnsiCursor(object):
- def UP(self, n=1):
- return CSI + str(n) + 'A'
- def DOWN(self, n=1):
- return CSI + str(n) + 'B'
- def FORWARD(self, n=1):
- return CSI + str(n) + 'C'
- def BACK(self, n=1):
- return CSI + str(n) + 'D'
- def POS(self, x=1, y=1):
- return CSI + str(y) + ';' + str(x) + 'H'
- class AnsiFore(AnsiCodes):
- BLACK = 30
- RED = 31
- GREEN = 32
- YELLOW = 33
- BLUE = 34
- MAGENTA = 35
- CYAN = 36
- WHITE = 37
- RESET = 39
- # These are fairly well supported, but not part of the standard.
- LIGHTBLACK_EX = 90
- LIGHTRED_EX = 91
- LIGHTGREEN_EX = 92
- LIGHTYELLOW_EX = 93
- LIGHTBLUE_EX = 94
- LIGHTMAGENTA_EX = 95
- LIGHTCYAN_EX = 96
- LIGHTWHITE_EX = 97
- class AnsiBack(AnsiCodes):
- BLACK = 40
- RED = 41
- GREEN = 42
- YELLOW = 43
- BLUE = 44
- MAGENTA = 45
- CYAN = 46
- WHITE = 47
- RESET = 49
- # These are fairly well supported, but not part of the standard.
- LIGHTBLACK_EX = 100
- LIGHTRED_EX = 101
- LIGHTGREEN_EX = 102
- LIGHTYELLOW_EX = 103
- LIGHTBLUE_EX = 104
- LIGHTMAGENTA_EX = 105
- LIGHTCYAN_EX = 106
- LIGHTWHITE_EX = 107
- class AnsiStyle(AnsiCodes):
- BRIGHT = 1
- DIM = 2
- NORMAL = 22
- RESET_ALL = 0
- Fore = AnsiFore()
- Back = AnsiBack()
- Style = AnsiStyle()
- Cursor = AnsiCursor()
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