254 lines
8.0 KiB
Python
254 lines
8.0 KiB
Python
# -*- coding: ISO-8859-1 -*-
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import os
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import re
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import sys
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terminal_escape = re.compile("(\001?\033\\[[0-9;]*m\002?)")
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escape_parts = re.compile("\001?\033\\[([0-9;]*)m\002?")
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class AnsiState(object):
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def __init__(
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self,
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bold=False,
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inverse=False,
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color="white",
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background="black",
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backgroundbold=False,
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):
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self.bold = bold
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self.inverse = inverse
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self.color = color
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self.background = background
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self.backgroundbold = backgroundbold
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trtable = {
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"black": 0,
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"red": 4,
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"green": 2,
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"yellow": 6,
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"blue": 1,
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"magenta": 5,
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"cyan": 3,
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"white": 7,
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}
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revtable = dict(zip(trtable.values(), trtable.keys()))
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def get_winattr(self):
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attr = 0
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if self.bold:
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attr |= 0x0008
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if self.backgroundbold:
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attr |= 0x0080
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if self.inverse:
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attr |= 0x4000
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attr |= self.trtable[self.color]
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attr |= self.trtable[self.background] << 4
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return attr
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def set_winattr(self, attr):
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self.bold = bool(attr & 0x0008)
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self.backgroundbold = bool(attr & 0x0080)
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self.inverse = bool(attr & 0x4000)
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self.color = self.revtable[attr & 0x0007]
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self.background = self.revtable[(attr & 0x0070) >> 4]
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winattr = property(get_winattr, set_winattr)
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def __repr__(self):
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return (
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"AnsiState(bold=%s,inverse=%s,color=%9s,"
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"background=%9s,backgroundbold=%s)# 0x%x"
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% (
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self.bold,
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self.inverse,
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'"%s"' % self.color,
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'"%s"' % self.background,
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self.backgroundbold,
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self.winattr,
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)
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)
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def copy(self):
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x = AnsiState()
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x.bold = self.bold
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x.inverse = self.inverse
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x.color = self.color
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x.background = self.background
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x.backgroundbold = self.backgroundbold
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return x
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defaultstate = AnsiState(False, False, "white")
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trtable = {
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0: "black",
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1: "red",
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2: "green",
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3: "yellow",
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4: "blue",
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5: "magenta",
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6: "cyan",
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7: "white",
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}
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class AnsiWriter(object):
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def __init__(self, default=defaultstate):
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if isinstance(defaultstate, AnsiState):
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self.defaultstate = default
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else:
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self.defaultstate = AnsiState()
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self.defaultstate.winattr = defaultstate
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def write_color(self, text, attr=None):
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"""write text at current cursor position and interpret color escapes.
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return the number of characters written.
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"""
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if isinstance(attr, AnsiState):
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defaultstate = attr
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elif attr is None: # use attribute form initial console
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attr = self.defaultstate.copy()
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else:
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defaultstate = AnsiState()
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defaultstate.winattr = attr
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attr = defaultstate
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chunks = terminal_escape.split(text)
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n = 0 # count the characters we actually write, omitting the escapes
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res = []
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for chunk in chunks:
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m = escape_parts.match(chunk)
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if m:
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parts = m.group(1).split(";")
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if len(parts) == 1 and parts[0] == "0":
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attr = self.defaultstate.copy()
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continue
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for part in parts:
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if part == "0": # No text attribute
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attr = self.defaultstate.copy()
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attr.bold = False
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elif part == "7": # switch on reverse
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attr.inverse = True
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# switch on bold (i.e. intensify foreground color)
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elif part == "1":
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attr.bold = True
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elif len(part) == 2:
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if part == "22": # Normal foreground color
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attr.bold = False
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elif "30" <= part <= "37": # set foreground color
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attr.color = trtable[int(part) - 30]
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elif part == "39": # Default foreground color
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attr.color = self.defaultstate.color
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elif "40" <= part <= "47": # set background color
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attr.background = trtable[int(part) - 40]
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elif part == "49": # Default background color
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attr.background = self.defaultstate.background
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continue
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n += len(chunk)
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res.append((attr.copy(), chunk))
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return n, res
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def parse_color(self, text, attr=None):
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n, res = self.write_color(text, attr)
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return n, [attr.winattr for attr, text in res]
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def write_color(text, attr=None):
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a = AnsiWriter(defaultstate)
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return a.write_color(text, attr)
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def write_color_old(text, attr=None):
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"""write text at current cursor position and interpret color escapes.
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return the number of characters written.
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"""
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res = []
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chunks = terminal_escape.split(text)
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n = 0 # count the characters we actually write, omitting the escapes
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if attr is None: # use attribute from initial console
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attr = 15
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for chunk in chunks:
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m = escape_parts.match(chunk)
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if m:
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for part in m.group(1).split(";"):
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if part == "0": # No text attribute
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attr = 0
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elif part == "7": # switch on reverse
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attr |= 0x4000
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# switch on bold (i.e. intensify foreground color)
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if part == "1":
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attr |= 0x08
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elif len(part) == 2 and "30" <= part <= "37": # set foreground color
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part = int(part) - 30
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# we have to mirror bits
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attr = (
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(attr & ~0x07)
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| ((part & 0x1) << 2)
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| (part & 0x2)
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| ((part & 0x4) >> 2)
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)
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elif len(part) == 2 and "40" <= part <= "47": # set background color
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part = int(part) - 40
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# we have to mirror bits
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attr = (
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(attr & ~0x70)
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| ((part & 0x1) << 6)
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| ((part & 0x2) << 4)
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| ((part & 0x4) << 2)
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)
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# ignore blink, underline and anything we don't understand
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continue
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n += len(chunk)
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if chunk:
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res.append(("0x%x" % attr, chunk))
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return res
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# trtable={0:"black",1:"red",2:"green",3:"yellow",4:"blue",5:"magenta",6:"cyan",7:"white"}
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if __name__ == "__main__x":
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import pprint
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pprint = pprint.pprint
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s = "\033[0;31mred\033[0;32mgreen\033[0;33myellow\033[0;34mblue\033[0;35mmagenta\033[0;36mcyan\033[0;37mwhite\033[0m"
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pprint(write_color(s))
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pprint(write_color_old(s))
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s = "\033[1;31mred\033[1;32mgreen\033[1;33myellow\033[1;34mblue\033[1;35mmagenta\033[1;36mcyan\033[1;37mwhite\033[0m"
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pprint(write_color(s))
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pprint(write_color_old(s))
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s = "\033[0;7;31mred\033[0;7;32mgreen\033[0;7;33myellow\033[0;7;34mblue\033[0;7;35mmagenta\033[0;7;36mcyan\033[0;7;37mwhite\033[0m"
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pprint(write_color(s))
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pprint(write_color_old(s))
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s = "\033[1;7;31mred\033[1;7;32mgreen\033[1;7;33myellow\033[1;7;34mblue\033[1;7;35mmagenta\033[1;7;36mcyan\033[1;7;37mwhite\033[0m"
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pprint(write_color(s))
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pprint(write_color_old(s))
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if __name__ == "__main__":
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import pprint
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import console
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pprint = pprint.pprint
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c = console.Console()
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c.write_color("dhsjdhs")
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c.write_color("\033[0;32mIn [\033[1;32m1\033[0;32m]:")
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print
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pprint(write_color("\033[0;32mIn [\033[1;32m1\033[0;32m]:"))
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if __name__ == "__main__x":
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import pprint
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pprint = pprint.pprint
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s = "\033[0;31mred\033[0;32mgreen\033[0;33myellow\033[0;34mblue\033[0;35mmagenta\033[0;36mcyan\033[0;37mwhite\033[0m"
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pprint(write_color(s))
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