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import sys, os
try:
if not (sys.stderr.isatty() and sys.stdout.isatty()):
raise ValueError('not a tty')
from ctypes import *
class COORD(Structure):
_fields_ = [("X", c_short), ("Y", c_short)]
class SMALL_RECT(Structure):
_fields_ = [("Left", c_short), ("Top", c_short), ("Right", c_short), ("Bottom", c_short)]
class CONSOLE_SCREEN_BUFFER_INFO(Structure):
_fields_ = [("Size", COORD), ("CursorPosition", COORD), ("Attributes", c_short), ("Window", SMALL_RECT), ("MaximumWindowSize", COORD)]
class CONSOLE_CURSOR_INFO(Structure):
_fields_ = [('dwSize',c_ulong), ('bVisible', c_int)]
sbinfo = CONSOLE_SCREEN_BUFFER_INFO()
csinfo = CONSOLE_CURSOR_INFO()
hconsole = windll.kernel32.GetStdHandle(-11)
windll.kernel32.GetConsoleScreenBufferInfo(hconsole, byref(sbinfo))
if sbinfo.Size.X < 9 or sbinfo.Size.Y < 9: raise ValueError('small console')
windll.kernel32.GetConsoleCursorInfo(hconsole, byref(csinfo))
except Exception:
pass
else:
import re, threading
is_vista = getattr(sys, "getwindowsversion", None) and sys.getwindowsversion()[0] >= 6
try:
_type = unicode
except:
_type = str
to_int = lambda number, default: number and int(number) or default
wlock = threading.Lock()
STD_OUTPUT_HANDLE = -11
STD_ERROR_HANDLE = -12
class AnsiTerm(object):
"""
emulate a vt100 terminal in cmd.exe
"""
def __init__(self):
self.encoding = sys.stdout.encoding
self.hconsole = windll.kernel32.GetStdHandle(STD_OUTPUT_HANDLE)
self.cursor_history = []
self.orig_sbinfo = CONSOLE_SCREEN_BUFFER_INFO()
self.orig_csinfo = CONSOLE_CURSOR_INFO()
windll.kernel32.GetConsoleScreenBufferInfo(self.hconsole, byref(self.orig_sbinfo))
windll.kernel32.GetConsoleCursorInfo(hconsole, byref(self.orig_csinfo))
def screen_buffer_info(self):
sbinfo = CONSOLE_SCREEN_BUFFER_INFO()
windll.kernel32.GetConsoleScreenBufferInfo(self.hconsole, byref(sbinfo))
return sbinfo
def clear_line(self, param):
mode = param and int(param) or 0
sbinfo = self.screen_buffer_info()
if mode == 1: # Clear from begining of line to cursor position
line_start = COORD(0, sbinfo.CursorPosition.Y)
line_length = sbinfo.Size.X
elif mode == 2: # Clear entire line
line_start = COORD(sbinfo.CursorPosition.X, sbinfo.CursorPosition.Y)
line_length = sbinfo.Size.X - sbinfo.CursorPosition.X
else: # Clear from cursor position to end of line
line_start = sbinfo.CursorPosition
line_length = sbinfo.Size.X - sbinfo.CursorPosition.X
chars_written = c_int()
windll.kernel32.FillConsoleOutputCharacterA(self.hconsole, c_wchar(' '), line_length, line_start, byref(chars_written))
windll.kernel32.FillConsoleOutputAttribute(self.hconsole, sbinfo.Attributes, line_length, line_start, byref(chars_written))
def clear_screen(self, param):
mode = to_int(param, 0)
sbinfo = self.screen_buffer_info()
if mode == 1: # Clear from begining of screen to cursor position
clear_start = COORD(0, 0)
clear_length = sbinfo.CursorPosition.X * sbinfo.CursorPosition.Y
elif mode == 2: # Clear entire screen and return cursor to home
clear_start = COORD(0, 0)
clear_length = sbinfo.Size.X * sbinfo.Size.Y
windll.kernel32.SetConsoleCursorPosition(self.hconsole, clear_start)
else: # Clear from cursor position to end of screen
clear_start = sbinfo.CursorPosition
clear_length = ((sbinfo.Size.X - sbinfo.CursorPosition.X) + sbinfo.Size.X * (sbinfo.Size.Y - sbinfo.CursorPosition.Y))
chars_written = c_int()
windll.kernel32.FillConsoleOutputCharacterA(self.hconsole, c_wchar(' '), clear_length, clear_start, byref(chars_written))
windll.kernel32.FillConsoleOutputAttribute(self.hconsole, sbinfo.Attributes, clear_length, clear_start, byref(chars_written))
def push_cursor(self, param):
sbinfo = self.screen_buffer_info()
self.cursor_history.append(sbinfo.CursorPosition)
def pop_cursor(self, param):
if self.cursor_history:
old_pos = self.cursor_history.pop()
windll.kernel32.SetConsoleCursorPosition(self.hconsole, old_pos)
def set_cursor(self, param):
y, sep, x = param.partition(';')
x = to_int(x, 1) - 1
y = to_int(y, 1) - 1
sbinfo = self.screen_buffer_info()
new_pos = COORD(
min(max(0, x), sbinfo.Size.X),
min(max(0, y), sbinfo.Size.Y)
)
windll.kernel32.SetConsoleCursorPosition(self.hconsole, new_pos)
def set_column(self, param):
x = to_int(param, 1) - 1
sbinfo = self.screen_buffer_info()
new_pos = COORD(
min(max(0, x), sbinfo.Size.X),
sbinfo.CursorPosition.Y
)
windll.kernel32.SetConsoleCursorPosition(self.hconsole, new_pos)
def move_cursor(self, x_offset=0, y_offset=0):
sbinfo = self.screen_buffer_info()
new_pos = COORD(
min(max(0, sbinfo.CursorPosition.X + x_offset), sbinfo.Size.X),
min(max(0, sbinfo.CursorPosition.Y + y_offset), sbinfo.Size.Y)
)
windll.kernel32.SetConsoleCursorPosition(self.hconsole, new_pos)
def move_up(self, param):
self.move_cursor(y_offset = -to_int(param, 1))
def move_down(self, param):
self.move_cursor(y_offset = to_int(param, 1))
def move_left(self, param):
self.move_cursor(x_offset = -to_int(param, 1))
def move_right(self, param):
self.move_cursor(x_offset = to_int(param, 1))
def next_line(self, param):
sbinfo = self.screen_buffer_info()
self.move_cursor(
x_offset = -sbinfo.CursorPosition.X,
y_offset = to_int(param, 1)
)
def prev_line(self, param):
sbinfo = self.screen_buffer_info()
self.move_cursor(
x_offset = -sbinfo.CursorPosition.X,
y_offset = -to_int(param, 1)
)
def rgb2bgr(self, c):
return ((c&1) << 2) | (c&2) | ((c&4)>>2)
def set_color(self, param):
cols = param.split(';')
sbinfo = CONSOLE_SCREEN_BUFFER_INFO()
windll.kernel32.GetConsoleScreenBufferInfo(self.hconsole, byref(sbinfo))
attr = sbinfo.Attributes
for c in cols:
if is_vista:
c = int(c)
else:
c = to_int(c, 0)
if c in range(30,38): # fgcolor
attr = (attr & 0xfff0) | self.rgb2bgr(c-30)
elif c in range(40,48): # bgcolor
attr = (attr & 0xff0f) | (self.rgb2bgr(c-40) << 4)
elif c == 0: # reset
attr = self.orig_sbinfo.Attributes
elif c == 1: # strong
attr |= 0x08
elif c == 4: # blink not available -> bg intensity
attr |= 0x80
elif c == 7: # negative
attr = (attr & 0xff88) | ((attr & 0x70) >> 4) | ((attr & 0x07) << 4)
windll.kernel32.SetConsoleTextAttribute(self.hconsole, attr)
def show_cursor(self,param):
csinfo.bVisible = 1
windll.kernel32.SetConsoleCursorInfo(self.hconsole, byref(csinfo))
def hide_cursor(self,param):
csinfo.bVisible = 0
windll.kernel32.SetConsoleCursorInfo(self.hconsole, byref(csinfo))
ansi_command_table = {
'A': move_up,
'B': move_down,
'C': move_right,
'D': move_left,
'E': next_line,
'F': prev_line,
'G': set_column,
'H': set_cursor,
'f': set_cursor,
'J': clear_screen,
'K': clear_line,
'h': show_cursor,
'l': hide_cursor,
'm': set_color,
's': push_cursor,
'u': pop_cursor,
}
# Match either the escape sequence or text not containing escape sequence
ansi_tokens = re.compile('(?:\x1b\[([0-9?;]*)([a-zA-Z])|([^\x1b]+))')
def write(self, text):
try:
wlock.acquire()
for param, cmd, txt in self.ansi_tokens.findall(text):
if cmd:
cmd_func = self.ansi_command_table.get(cmd)
if cmd_func:
cmd_func(self, param)
else:
self.writeconsole(txt)
finally:
wlock.release()
def writeconsole(self, txt):
chars_written = c_int()
writeconsole = windll.kernel32.WriteConsoleA
if isinstance(txt, _type):
writeconsole = windll.kernel32.WriteConsoleW
TINY_STEP = 3000
for x in range(0, len(txt), TINY_STEP):
# According MSDN, size should NOT exceed 64 kb (issue #746)
tiny = txt[x : x + TINY_STEP]
writeconsole(self.hconsole, tiny, len(tiny), byref(chars_written), None)
def flush(self):
pass
def isatty(self):
return True
sys.stderr = sys.stdout = AnsiTerm()
os.environ['TERM'] = 'vt100'
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