223 lines
7.5 KiB
Python
223 lines
7.5 KiB
Python
# -*- 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)
|