##// END OF EJS Templates
setting an option to null sets the default in CodeMirror...
setting an option to null sets the default in CodeMirror matching the unset behavior in config

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ansi.py
166 lines | 4.7 KiB | text/x-python | PythonLexer
"""Filters for processing ANSI colors within Jinja templates.
"""
#-----------------------------------------------------------------------------
# Copyright (c) 2013, the IPython Development Team.
#
# Distributed under the terms of the Modified BSD License.
#
# The full license is in the file COPYING.txt, distributed with this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
import re
from IPython.utils import coloransi
from IPython.utils.text import strip_ansi
#-----------------------------------------------------------------------------
# Classes and functions
#-----------------------------------------------------------------------------
__all__ = [
'strip_ansi',
'ansi2html',
'single_ansi2latex',
'ansi2latex'
]
ansi_colormap = {
'30': 'ansiblack',
'31': 'ansired',
'32': 'ansigreen',
'33': 'ansiyellow',
'34': 'ansiblue',
'35': 'ansipurple',
'36': 'ansicyan',
'37': 'ansigrey',
'01': 'ansibold',
}
html_escapes = {
'<': '&lt;',
'>': '&gt;',
"'": '&apos;',
'"': '&quot;',
'`': '&#96;',
}
ansi_re = re.compile('\x1b' + r'\[([\dA-Fa-f;]*?)m')
def ansi2html(text):
"""
Convert ansi colors to html colors.
Parameters
----------
text : str
Text containing ansi colors to convert to html
"""
# do ampersand first
text = text.replace('&', '&amp;')
for c, escape in html_escapes.items():
text = text.replace(c, escape)
m = ansi_re.search(text)
opened = False
cmds = []
opener = ''
closer = ''
while m:
cmds = m.groups()[0].split(';')
closer = '</span>' if opened else ''
# True if there is there more than one element in cmds, *or*
# if there is only one but it is not equal to a string of zeroes.
opened = len(cmds) > 1 or cmds[0] != '0' * len(cmds[0])
classes = []
for cmd in cmds:
if cmd in ansi_colormap:
classes.append(ansi_colormap[cmd])
if classes:
opener = '<span class="%s">' % (' '.join(classes))
else:
opener = ''
text = re.sub(ansi_re, closer + opener, text, 1)
m = ansi_re.search(text)
if opened:
text += '</span>'
return text
def single_ansi2latex(code):
"""Converts single ansi markup to latex format.
Return latex code and number of open brackets.
Accepts codes like '\x1b[1;32m' (bold, red) and the short form '\x1b[32m' (red)
Colors are matched to those defined in coloransi, which defines colors
using the 0, 1 (bold) and 5 (blinking) styles. Styles 1 and 5 are
interpreted as bold. All other styles are mapped to 0. Note that in
coloransi, a style of 1 does not just mean bold; for example, Brown is
"0;33", but Yellow is "1;33". An empty string is returned for unrecognised
codes and the "reset" code '\x1b[m'.
"""
components = code.split(';')
if len(components) > 1:
# Style is digits after '['
style = int(components[0].split('[')[-1])
color = components[1][:-1]
else:
style = 0
color = components[0][-3:-1]
# If the style is not normal (0), bold (1) or blinking (5) then treat it as normal
if style not in [0, 1, 5]:
style = 0
for name, tcode in coloransi.color_templates:
tstyle, tcolor = tcode.split(';')
tstyle = int(tstyle)
if tstyle == style and tcolor == color:
break
else:
return '', 0
if style == 5:
name = name[5:] # BlinkRed -> Red, etc
name = name.lower()
if style in [1, 5]:
return r'\textbf{\color{'+name+'}', 1
else:
return r'{\color{'+name+'}', 1
def ansi2latex(text):
"""Converts ansi formated text to latex version
based on https://bitbucket.org/birkenfeld/sphinx-contrib/ansi.py
"""
color_pattern = re.compile('\x1b\\[([^m]*)m')
last_end = 0
openbrack = 0
outstring = ''
for match in color_pattern.finditer(text):
head = text[last_end:match.start()]
outstring += head
if openbrack:
outstring += '}'*openbrack
openbrack = 0
code = match.group()
if not (code == coloransi.TermColors.Normal or openbrack):
texform, openbrack = single_ansi2latex(code)
outstring += texform
last_end = match.end()
# Add the remainer of the string and THEN close any remaining color brackets.
outstring += text[last_end:]
if openbrack:
outstring += '}'*openbrack
return outstring.strip()