/usr/lib/python2.7/dist-packages/pygments/formatters/terminal256.py is in python-pygments 2.0.1+dfsg-1.1+deb8u1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 | # -*- coding: utf-8 -*-
"""
pygments.formatters.terminal256
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Formatter for 256-color terminal output with ANSI sequences.
RGB-to-XTERM color conversion routines adapted from xterm256-conv
tool (http://frexx.de/xterm-256-notes/data/xterm256-conv2.tar.bz2)
by Wolfgang Frisch.
Formatter version 1.
:copyright: Copyright 2006-2014 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
# TODO:
# - Options to map style's bold/underline/italic/border attributes
# to some ANSI attrbutes (something like 'italic=underline')
# - An option to output "style RGB to xterm RGB/index" conversion table
# - An option to indicate that we are running in "reverse background"
# xterm. This means that default colors are white-on-black, not
# black-on-while, so colors like "white background" need to be converted
# to "white background, black foreground", etc...
import sys
from pygments.formatter import Formatter
__all__ = ['Terminal256Formatter']
class EscapeSequence:
def __init__(self, fg=None, bg=None, bold=False, underline=False):
self.fg = fg
self.bg = bg
self.bold = bold
self.underline = underline
def escape(self, attrs):
if len(attrs):
return "\x1b[" + ";".join(attrs) + "m"
return ""
def color_string(self):
attrs = []
if self.fg is not None:
attrs.extend(("38", "5", "%i" % self.fg))
if self.bg is not None:
attrs.extend(("48", "5", "%i" % self.bg))
if self.bold:
attrs.append("01")
if self.underline:
attrs.append("04")
return self.escape(attrs)
def reset_string(self):
attrs = []
if self.fg is not None:
attrs.append("39")
if self.bg is not None:
attrs.append("49")
if self.bold or self.underline:
attrs.append("00")
return self.escape(attrs)
class Terminal256Formatter(Formatter):
r"""
Format tokens with ANSI color sequences, for output in a 256-color
terminal or console. Like in `TerminalFormatter` color sequences
are terminated at newlines, so that paging the output works correctly.
The formatter takes colors from a style defined by the `style` option
and converts them to nearest ANSI 256-color escape sequences. Bold and
underline attributes from the style are preserved (and displayed).
.. versionadded:: 0.9
Options accepted:
`style`
The style to use, can be a string or a Style subclass (default:
``'default'``).
"""
name = 'Terminal256'
aliases = ['terminal256', 'console256', '256']
filenames = []
def __init__(self, **options):
Formatter.__init__(self, **options)
self.xterm_colors = []
self.best_match = {}
self.style_string = {}
self.usebold = 'nobold' not in options
self.useunderline = 'nounderline' not in options
self._build_color_table() # build an RGB-to-256 color conversion table
self._setup_styles() # convert selected style's colors to term. colors
def _build_color_table(self):
# colors 0..15: 16 basic colors
self.xterm_colors.append((0x00, 0x00, 0x00)) # 0
self.xterm_colors.append((0xcd, 0x00, 0x00)) # 1
self.xterm_colors.append((0x00, 0xcd, 0x00)) # 2
self.xterm_colors.append((0xcd, 0xcd, 0x00)) # 3
self.xterm_colors.append((0x00, 0x00, 0xee)) # 4
self.xterm_colors.append((0xcd, 0x00, 0xcd)) # 5
self.xterm_colors.append((0x00, 0xcd, 0xcd)) # 6
self.xterm_colors.append((0xe5, 0xe5, 0xe5)) # 7
self.xterm_colors.append((0x7f, 0x7f, 0x7f)) # 8
self.xterm_colors.append((0xff, 0x00, 0x00)) # 9
self.xterm_colors.append((0x00, 0xff, 0x00)) # 10
self.xterm_colors.append((0xff, 0xff, 0x00)) # 11
self.xterm_colors.append((0x5c, 0x5c, 0xff)) # 12
self.xterm_colors.append((0xff, 0x00, 0xff)) # 13
self.xterm_colors.append((0x00, 0xff, 0xff)) # 14
self.xterm_colors.append((0xff, 0xff, 0xff)) # 15
# colors 16..232: the 6x6x6 color cube
valuerange = (0x00, 0x5f, 0x87, 0xaf, 0xd7, 0xff)
for i in range(217):
r = valuerange[(i // 36) % 6]
g = valuerange[(i // 6) % 6]
b = valuerange[i % 6]
self.xterm_colors.append((r, g, b))
# colors 233..253: grayscale
for i in range(1, 22):
v = 8 + i * 10
self.xterm_colors.append((v, v, v))
def _closest_color(self, r, g, b):
distance = 257*257*3 # "infinity" (>distance from #000000 to #ffffff)
match = 0
for i in range(0, 254):
values = self.xterm_colors[i]
rd = r - values[0]
gd = g - values[1]
bd = b - values[2]
d = rd*rd + gd*gd + bd*bd
if d < distance:
match = i
distance = d
return match
def _color_index(self, color):
index = self.best_match.get(color, None)
if index is None:
try:
rgb = int(str(color), 16)
except ValueError:
rgb = 0
r = (rgb >> 16) & 0xff
g = (rgb >> 8) & 0xff
b = rgb & 0xff
index = self._closest_color(r, g, b)
self.best_match[color] = index
return index
def _setup_styles(self):
for ttype, ndef in self.style:
escape = EscapeSequence()
if ndef['color']:
escape.fg = self._color_index(ndef['color'])
if ndef['bgcolor']:
escape.bg = self._color_index(ndef['bgcolor'])
if self.usebold and ndef['bold']:
escape.bold = True
if self.useunderline and ndef['underline']:
escape.underline = True
self.style_string[str(ttype)] = (escape.color_string(),
escape.reset_string())
def format(self, tokensource, outfile):
# hack: if the output is a terminal and has an encoding set,
# use that to avoid unicode encode problems
if not self.encoding and hasattr(outfile, "encoding") and \
hasattr(outfile, "isatty") and outfile.isatty() and \
sys.version_info < (3,):
self.encoding = outfile.encoding
return Formatter.format(self, tokensource, outfile)
def format_unencoded(self, tokensource, outfile):
for ttype, value in tokensource:
not_found = True
while ttype and not_found:
try:
# outfile.write( "<" + str(ttype) + ">" )
on, off = self.style_string[str(ttype)]
# Like TerminalFormatter, add "reset colors" escape sequence
# on newline.
spl = value.split('\n')
for line in spl[:-1]:
if line:
outfile.write(on + line + off)
outfile.write('\n')
if spl[-1]:
outfile.write(on + spl[-1] + off)
not_found = False
# outfile.write( '#' + str(ttype) + '#' )
except KeyError:
# ottype = ttype
ttype = ttype[:-1]
# outfile.write( '!' + str(ottype) + '->' + str(ttype) + '!' )
if not_found:
outfile.write(value)
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