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221 lines
7.3 KiB
221 lines
7.3 KiB
import sys, os
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try:
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if (not sys.stderr.isatty()) or (not sys.stdout.isatty()):
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raise ValueError('not a tty')
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from ctypes import *
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class COORD(Structure):
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_fields_ = [("X", c_short), ("Y", c_short)]
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class SMALL_RECT(Structure):
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_fields_ = [("Left", c_short), ("Top", c_short), ("Right", c_short), ("Bottom", c_short)]
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class CONSOLE_SCREEN_BUFFER_INFO(Structure):
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_fields_ = [("Size", COORD), ("CursorPosition", COORD), ("Attributes", c_short), ("Window", SMALL_RECT), ("MaximumWindowSize", COORD)]
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class CONSOLE_CURSOR_INFO(Structure):
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_fields_ = [('dwSize',c_ulong), ('bVisible', c_int)]
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sbinfo = CONSOLE_SCREEN_BUFFER_INFO()
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csinfo = CONSOLE_CURSOR_INFO()
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hconsole = windll.kernel32.GetStdHandle(-11)
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windll.kernel32.GetConsoleScreenBufferInfo(hconsole, byref(sbinfo))
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if sbinfo.Size.X < 10 or sbinfo.Size.Y < 10: raise Exception('small console')
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windll.kernel32.GetConsoleCursorInfo(hconsole, byref(csinfo))
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except Exception:
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pass
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else:
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import re, threading
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to_int = lambda number, default: number and int(number) or default
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wlock = threading.Lock()
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STD_OUTPUT_HANDLE = -11
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STD_ERROR_HANDLE = -12
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class AnsiTerm(object):
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def __init__(self):
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self.hconsole = windll.kernel32.GetStdHandle(STD_OUTPUT_HANDLE)
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self.cursor_history = []
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def screen_buffer_info(self):
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sbinfo = CONSOLE_SCREEN_BUFFER_INFO()
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windll.kernel32.GetConsoleScreenBufferInfo(self.hconsole, byref(sbinfo))
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return sbinfo
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def clear_line(self, param):
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mode = param and int(param) or 0
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sbinfo = self.screen_buffer_info()
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if mode == 1: # Clear from begining of line to cursor position
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line_start = COORD(0, sbinfo.CursorPosition.Y)
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line_length = sbinfo.Size.X
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elif mode == 2: # Clear entire line
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line_start = COORD(sbinfo.CursorPosition.X, sbinfo.CursorPosition.Y)
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line_length = sbinfo.Size.X - sbinfo.CursorPosition.X
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else: # Clear from cursor position to end of line
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line_start = sbinfo.CursorPosition
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line_length = sbinfo.Size.X - sbinfo.CursorPosition.X
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chars_written = c_int()
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windll.kernel32.FillConsoleOutputCharacterA(self.hconsole, c_char(' '), line_length, line_start, byref(chars_written))
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windll.kernel32.FillConsoleOutputAttribute(self.hconsole, sbinfo.Attributes, line_length, line_start, byref(chars_written))
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def clear_screen(self, param):
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mode = to_int(param, 0)
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sbinfo = self.screen_buffer_info()
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if mode == 1: # Clear from begining of screen to cursor position
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clear_start = COORD(0, 0)
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clear_length = sbinfo.CursorPosition.X * sbinfo.CursorPosition.Y
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elif mode == 2: # Clear entire screen and return cursor to home
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clear_start = COORD(0, 0)
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clear_length = sbinfo.Size.X * sbinfo.Size.Y
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windll.kernel32.SetConsoleCursorPosition(self.hconsole, clear_start)
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else: # Clear from cursor position to end of screen
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clear_start = sbinfo.CursorPosition
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clear_length = ((sbinfo.Size.X - sbinfo.CursorPosition.X) + sbinfo.Size.X * (sbinfo.Size.Y - sbinfo.CursorPosition.Y))
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chars_written = c_int()
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windll.kernel32.FillConsoleOutputCharacterA(self.hconsole, c_char(' '), clear_length, clear_start, byref(chars_written))
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windll.kernel32.FillConsoleOutputAttribute(self.hconsole, sbinfo.Attributes, clear_length, clear_start, byref(chars_written))
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def push_cursor(self, param):
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sbinfo = self.screen_buffer_info()
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self.cursor_history.push(sbinfo.CursorPosition)
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def pop_cursor(self, param):
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if self.cursor_history:
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old_pos = self.cursor_history.pop()
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windll.kernel32.SetConsoleCursorPosition(self.hconsole, old_pos)
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def set_cursor(self, param):
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x, sep, y = param.partition(';')
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x = to_int(x, 1) - 1
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y = to_int(y, 1) - 1
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sbinfo = self.screen_buffer_info()
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new_pos = COORD(
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min(max(0, x), sbinfo.Size.X),
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min(max(0, y), sbinfo.Size.Y)
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)
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windll.kernel32.SetConsoleCursorPosition(self.hconsole, new_pos)
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def set_column(self, param):
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x = to_int(param, 1) - 1
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sbinfo = self.screen_buffer_info()
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new_pos = COORD(
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min(max(0, x), sbinfo.Size.X),
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sbinfo.CursorPosition.Y
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)
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windll.kernel32.SetConsoleCursorPosition(self.hconsole, new_pos)
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def move_cursor(self, x_offset=0, y_offset=0):
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sbinfo = self.screen_buffer_info()
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new_pos = COORD(
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min(max(0, sbinfo.CursorPosition.X + x_offset), sbinfo.Size.X),
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min(max(0, sbinfo.CursorPosition.Y + y_offset), sbinfo.Size.Y)
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)
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windll.kernel32.SetConsoleCursorPosition(self.hconsole, new_pos)
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def move_up(self, param):
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self.move_cursor(y_offset = -to_int(param, 1))
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def move_down(self, param):
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self.move_cursor(y_offset = to_int(param, 1))
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def move_left(self, param):
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self.move_cursor(x_offset = -to_int(param, 1))
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def move_right(self, param):
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self.move_cursor(x_offset = to_int(param, 1))
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def next_line(self, param):
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sbinfo = self.screen_buffer_info()
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self.move_cursor(
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x_offset = -sbinfo.CursorPosition.X,
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y_offset = to_int(param, 1)
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)
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def prev_line(self, param):
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sbinfo = self.screen_buffer_info()
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self.move_cursor(
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x_offset = -sbinfo.CursorPosition.X,
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y_offset = -to_int(param, 1)
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)
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escape_to_color = { (0, 30): 0x0, #black
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(0, 31): 0x4, #red
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(0, 32): 0x2, #green
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(0, 33): 0x4+0x2, #dark yellow
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(0, 34): 0x1, #blue
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(0, 35): 0x1+0x4, #purple
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(0, 36): 0x2+0x4, #cyan
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(0, 37): 0x1+0x2+0x4, #grey
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(1, 30): 0x1+0x2+0x4, #dark gray
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(1, 31): 0x4+0x8, #red
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(1, 32): 0x2+0x8, #light green
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(1, 33): 0x4+0x2+0x8, #yellow
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(1, 34): 0x1+0x8, #light blue
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(1, 35): 0x1+0x4+0x8, #light purple
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(1, 36): 0x1+0x2+0x8, #light cyan
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(1, 37): 0x1+0x2+0x4+0x8, #white
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}
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def set_color(self, param):
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intensity, sep, color = param.partition(';')
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intensity = to_int(intensity, 0)
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color = to_int(color, 0)
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if intensity and not color:
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color, intensity = intensity, color
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attrib = self.escape_to_color.get((intensity, color), 0x7)
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windll.kernel32.SetConsoleTextAttribute(self.hconsole, attrib)
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def show_cursor(self,param):
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csinfo.bVisible = 1
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windll.kernel32.SetConsoleCursorInfo(self.hconsole, byref(csinfo))
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def hide_cursor(self,param):
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csinfo.bVisible = 0
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windll.kernel32.SetConsoleCursorInfo(self.hconsole, byref(csinfo))
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ansi_command_table = {
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'A': move_up,
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'B': move_down,
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'C': move_right,
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'D': move_left,
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'E': next_line,
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'F': prev_line,
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'G': set_column,
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'H': set_cursor,
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'f': set_cursor,
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'J': clear_screen,
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'K': clear_line,
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'h': show_cursor,
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'l': hide_cursor,
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'm': set_color,
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's': push_cursor,
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'u': pop_cursor,
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}
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# Match either the escape sequence or text not containing escape sequence
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ansi_tokans = re.compile('(?:\x1b\[([0-9?;]*)([a-zA-Z])|([^\x1b]+))')
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def write(self, text):
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wlock.acquire()
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for param, cmd, txt in self.ansi_tokans.findall(text):
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if cmd:
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cmd_func = self.ansi_command_table.get(cmd)
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if cmd_func:
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cmd_func(self, param)
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else:
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chars_written = c_int()
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if isinstance(txt, unicode):
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windll.kernel32.WriteConsoleW(self.hconsole, txt, len(txt), byref(chars_written), None)
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else:
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windll.kernel32.WriteConsoleA(self.hconsole, txt, len(txt), byref(chars_written), None)
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wlock.release()
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def flush(self):
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pass
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def isatty(self):
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return True
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sys.stderr = sys.stdout = AnsiTerm()
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os.environ['TERM'] = 'vt100'
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