242 lines
7.1 KiB
Python
Executable file
242 lines
7.1 KiB
Python
Executable file
#!/home/walkers/git/creeper-adventure/.venv/bin/python3
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#
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# "THE BEER-WARE LICENSE" (Revision 43~maze)
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#
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# <maze@pyth0n.org> wrote these files. As long as you retain this notice you
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# can do whatever you want with this stuff. If we meet some day, and you think
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# this stuff is worth it, you can buy me a beer in return.
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from __future__ import print_function
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import atexit
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import math
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import os
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import random
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import re
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import sys
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import time
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from signal import signal, SIGPIPE, SIG_DFL
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PY3 = sys.version_info >= (3,)
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# override default handler so no exceptions on SIGPIPE
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signal(SIGPIPE, SIG_DFL)
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# Reset terminal colors at exit
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def reset():
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sys.stdout.write('\x1b[0m')
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sys.stdout.flush()
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atexit.register(reset)
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STRIP_ANSI = re.compile(r'\x1b\[(\d+)(;\d+)?(;\d+)?[m|K]')
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COLOR_ANSI = (
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(0x00, 0x00, 0x00), (0xcd, 0x00, 0x00),
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(0x00, 0xcd, 0x00), (0xcd, 0xcd, 0x00),
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(0x00, 0x00, 0xee), (0xcd, 0x00, 0xcd),
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(0x00, 0xcd, 0xcd), (0xe5, 0xe5, 0xe5),
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(0x7f, 0x7f, 0x7f), (0xff, 0x00, 0x00),
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(0x00, 0xff, 0x00), (0xff, 0xff, 0x00),
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(0x5c, 0x5c, 0xff), (0xff, 0x00, 0xff),
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(0x00, 0xff, 0xff), (0xff, 0xff, 0xff),
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)
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class stdoutWin():
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def __init__(self):
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self.output = sys.stdout
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self.string = ''
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self.i = 0
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def isatty(self):
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return self.output.isatty()
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def write(self,s):
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self.string = self.string + s
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def flush(self):
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return self.output.flush()
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def prints(self):
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string = 'echo|set /p="%s"' %(self.string)
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os.system(string)
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self.i += 1
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self.string = ''
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def println(self):
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print()
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self.prints()
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class LolCat(object):
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def __init__(self, mode=256, output=sys.stdout):
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self.mode =mode
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self.output = output
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def _distance(self, rgb1, rgb2):
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return sum(map(lambda c: (c[0] - c[1]) ** 2,
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zip(rgb1, rgb2)))
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def ansi(self, rgb):
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r, g, b = rgb
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if self.mode in (8, 16):
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colors = COLOR_ANSI[:self.mode]
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matches = [(self._distance(c, map(int, rgb)), i) for i, c in enumerate(colors)]
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matches.sort()
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color = matches[0][1]
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return '3%d' % (color,)
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else:
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gray_possible = True
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sep = 2.5
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while gray_possible:
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if r < sep or g < sep or b < sep:
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gray = r < sep and g < sep and b < sep
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gray_possible = False
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sep += 42.5
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if gray:
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color = 232 + int(float(sum(rgb) / 33.0))
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else:
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color = sum([16]+[int(6 * float(val)/256) * mod
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for val, mod in zip(rgb, [36, 6, 1])])
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return '38;5;%d' % (color,)
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def wrap(self, *codes):
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return '\x1b[%sm' % (''.join(codes),)
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def rainbow(self, freq, i):
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r = math.sin(freq * i) * 127 + 128
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g = math.sin(freq * i + 2 * math.pi / 3) * 127 + 128
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b = math.sin(freq * i + 4 * math.pi / 3) * 127 + 128
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return [r, g, b]
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def cat(self, fd, options):
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if options.animate:
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self.output.write('\x1b[?25l')
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for line in fd:
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options.os += 1
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self.println(line, options)
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if options.animate:
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self.output.write('\x1b[?25h')
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def println(self, s, options):
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s = s.rstrip()
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if options.force or self.output.isatty():
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s = STRIP_ANSI.sub('', s)
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if options.animate:
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self.println_ani(s, options)
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else:
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self.println_plain(s, options)
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self.output.write('\n')
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self.output.flush()
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if os.name == 'nt':
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self.output.println()
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def println_ani(self, s, options):
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if not s:
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return
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for i in range(1, options.duration):
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self.output.write('\x1b[%dD' % (len(s),))
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self.output.flush()
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options.os += options.spread
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self.println_plain(s, options)
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time.sleep(1.0 / options.speed)
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def println_plain(self, s, options):
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for i, c in enumerate(s if PY3 else s.decode(options.charset_py2, 'replace')):
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rgb = self.rainbow(options.freq, options.os + i / options.spread)
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self.output.write(''.join([
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self.wrap(self.ansi(rgb)),
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c if PY3 else c.encode(options.charset_py2, 'replace'),
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]))
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if os.name == 'nt':
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self.output.print()
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def detect_mode(term_hint='xterm-256color'):
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'''
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Poor-mans color mode detection.
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'''
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if 'ANSICON' in os.environ:
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return 16
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elif os.environ.get('ConEmuANSI', 'OFF') == 'ON':
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return 256
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else:
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term = os.environ.get('TERM', term_hint)
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if term.endswith('-256color') or term in ('xterm', 'screen'):
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return 256
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elif term.endswith('-color') or term in ('rxvt',):
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return 16
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else:
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return 256 # optimistic default
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def run():
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"""Main entry point."""
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import optparse
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parser = optparse.OptionParser(usage=r'%prog [<options>] [file ...]')
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parser.add_option('-p', '--spread', type='float', default=3.0,
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help='Rainbow spread')
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parser.add_option('-F', '--freq', type='float', default=0.1,
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help='Rainbow frequency')
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parser.add_option('-S', '--seed', type='int', default=0,
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help='Rainbow seed')
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parser.add_option('-a', '--animate', action='store_true', default=False,
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help='Enable psychedelics')
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parser.add_option('-d', '--duration', type='int', default=12,
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help='Animation duration')
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parser.add_option('-s', '--speed', type='float', default=20.0,
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help='Animation speed')
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parser.add_option('-f', '--force', action='store_true', default=False,
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help='Force colour even when stdout is not a tty')
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parser.add_option('-3', action='store_const', dest='mode', const=8,
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help='Force 3 bit colour mode')
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parser.add_option('-4', action='store_const', dest='mode', const=16,
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help='Force 4 bit colour mode')
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parser.add_option('-8', action='store_const', dest='mode', const=256,
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help='Force 8 bit colour mode')
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parser.add_option('-c', '--charset-py2', default='utf-8',
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help='Manually set a charset to convert from, for python 2.7')
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options, args = parser.parse_args()
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options.os = random.randint(0, 256) if options.seed == 0 else options.seed
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options.mode = options.mode or detect_mode()
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if os.name == 'nt':
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lolcat = LolCat(mode=options.mode,output=stdoutWin())
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else:
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lolcat = LolCat(mode=options.mode)
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if not args:
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args = ['-']
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for filename in args:
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try:
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if filename == '-':
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lolcat.cat(sys.stdin, options)
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else:
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with open(filename, 'r', errors='backslashreplace') as handle:
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lolcat.cat(handle, options)
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except IOError as error:
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sys.stderr.write(str(error) + '\n')
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except KeyboardInterrupt:
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sys.stderr.write('\n')
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# exit 130 for terminated-by-ctrl-c, from http://tldp.org/LDP/abs/html/exitcodes.html
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return 130
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if __name__ == '__main__':
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sys.exit(run())
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