mmgen-wallet/mmgen/color.py

105 lines
3 KiB
Python
Executable file

#!/usr/bin/env python3
#
# mmgen = Multi-Mode GENerator, command-line Bitcoin cold storage solution
# Copyright (C)2013-2020 The MMGen Project <mmgen@tuta.io>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
color.py: color handling for the MMGen suite
"""
_colors = {
'black': ( 232, (30,0) ),
'red': ( 210, (31,1) ),
'green': ( 121, (32,1) ),
'yellow': ( 229, (33,1) ),
'blue': ( 75, (34,1) ),
'magenta': ( 205, (35,1) ),
'cyan': ( 122, (36,1) ),
'pink': ( 218, (35,1) ),
'orange': ( 216, (31,1) ),
'gray': ( 246, (30,1) ),
'purple': ( 141, (35,1) ),
'brown': ( 208, (33,0) ),
'grndim': ( 108, (32,0) ),
'redbg': ( (232,210), (30,101) ),
'grnbg': ( (232,121), (30,102) ),
'blubg': ( (232,75), (30,104) ),
'yelbg': ( (232,229), (30,103) ),
}
for _c in _colors:
_e = _colors[_c]
globals()['_256_'+_c] = '\033[38;5;{};1m'.format(_e[0]) if type(_e[0]) == int \
else '\033[38;5;{};48;5;{};1m'.format(*_e[0])
globals()['_16_'+_c] = '\033[{}m'.format(_e[1][0]) if _e[1][1] == 0 \
else '\033[{};{}m'.format(*_e[1])
globals()['_clr_'+_c] = ''; _reset = ''
exec('def {c}(s): return _clr_{c}+s+_reset'.format(c=_c))
def nocolor(s): return s
def get_terminfo_colors(term=None):
from subprocess import run,PIPE
cmd = ['infocmp','-0']
if term:
cmd.append(term)
def is_hex_str(s):
from string import hexdigits
return set(list(s)) <= set(list(hexdigits))
try:
cmdout = run(cmd,stdout=PIPE,check=True).stdout.decode()
except:
return None
else:
s = [e.split('#')[1] for e in cmdout.split(',') if e.startswith('colors')][0]
if s.isdecimal():
return int(s)
elif s.startswith('0x') and is_hex_str(s[2:]):
return int(s[2:],16)
else:
return None
def init_color(num_colors='auto'):
assert num_colors in ('auto',8,16,256)
globals()['_reset'] = '\033[0m'
import os
t = os.getenv('TERM')
if num_colors in (8,16):
pfx = '_16_'
elif num_colors == 256 or (t and t.endswith('256color')) or get_terminfo_colors() == 256:
pfx = '_256_'
else:
pfx = '_16_'
for c in _colors:
globals()['_clr_'+c] = globals()[pfx+c]
def start_mscolor():
import sys
from mmgen.globalvars import g
try:
import colorama
colorama.init(strip=True,convert=True)
except:
from mmgen.util import msg
msg('Import of colorama module failed')
else:
g.stdout = sys.stdout
g.stderr = sys.stderr