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"""
pygments.formatters.groff
~~~~~~~~~~~~~~~~~~~~~~~~~
Formatter for groff output.
:copyright: Copyright 2006-2023 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import math
from pip._vendor.pygments.formatter import Formatter
from pip._vendor.pygments.util import get_bool_opt, get_int_opt
__all__ = ['GroffFormatter']
class GroffFormatter(Formatter):
"""
Format tokens with groff escapes to change their color and font style.
.. versionadded:: 2.11
Additional options accepted:
`style`
The style to use, can be a string or a Style subclass (default:
``'default'``).
`monospaced`
If set to true, monospace font will be used (default: ``true``).
`linenos`
If set to true, print the line numbers (default: ``false``).
`wrap`
Wrap lines to the specified number of characters. Disabled if set to 0
(default: ``0``).
"""
name = 'groff'
aliases = ['groff','troff','roff']
filenames = []
def __init__(self, **options):
Formatter.__init__(self, **options)
self.monospaced = get_bool_opt(options, 'monospaced', True)
self.linenos = get_bool_opt(options, 'linenos', False)
self._lineno = 0
self.wrap = get_int_opt(options, 'wrap', 0)
self._linelen = 0
self.styles = {}
self._make_styles()
def _make_styles(self):
regular = '\\f[CR]' if self.monospaced else '\\f[R]'
bold = '\\f[CB]' if self.monospaced else '\\f[B]'
italic = '\\f[CI]' if self.monospaced else '\\f[I]'
for ttype, ndef in self.style:
start = end = ''
if ndef['color']:
start += '\\m[%s]' % ndef['color']
end = '\\m[]' + end
if ndef['bold']:
start += bold
end = regular + end
if ndef['italic']:
start += italic
end = regular + end
if ndef['bgcolor']:
start += '\\M[%s]' % ndef['bgcolor']
end = '\\M[]' + end
self.styles[ttype] = start, end
def _define_colors(self, outfile):
colors = set()
for _, ndef in self.style:
if ndef['color'] is not None:
colors.add(ndef['color'])
for color in sorted(colors):
outfile.write('.defcolor ' + color + ' rgb #' + color + '\n')
def _write_lineno(self, outfile):
self._lineno += 1
outfile.write("%s% 4d " % (self._lineno != 1 and '\n' or '', self._lineno))
def _wrap_line(self, line):
length = len(line.rstrip('\n'))
space = ' ' if self.linenos else ''
newline = ''
if length > self.wrap:
for i in range(0, math.floor(length / self.wrap)):
chunk = line[i*self.wrap:i*self.wrap+self.wrap]
newline += (chunk + '\n' + space)
remainder = length % self.wrap
if remainder > 0:
newline += line[-remainder-1:]
self._linelen = remainder
elif self._linelen + length > self.wrap:
newline = ('\n' + space) + line
self._linelen = length
else:
newline = line
self._linelen += length
return newline
def _escape_chars(self, text):
text = text.replace('\\', '\\[u005C]'). \
replace('.', '\\[char46]'). \
replace('\'', '\\[u0027]'). \
replace('`', '\\[u0060]'). \
replace('~', '\\[u007E]')
copy = text
for char in copy:
if len(char) != len(char.encode()):
uni = char.encode('unicode_escape') \
.decode()[1:] \
.replace('x', 'u00') \
.upper()
text = text.replace(char, '\\[u' + uni[1:] + ']')
return text
def format_unencoded(self, tokensource, outfile):
self._define_colors(outfile)
outfile.write('.nf\n\\f[CR]\n')
if self.linenos:
self._write_lineno(outfile)
for ttype, value in tokensource:
while ttype not in self.styles:
ttype = ttype.parent
start, end = self.styles[ttype]
for line in value.splitlines(True):
if self.wrap > 0:
line = self._wrap_line(line)
if start and end:
text = self._escape_chars(line.rstrip('\n'))
if text != '':
outfile.write(''.join((start, text, end)))
else:
outfile.write(self._escape_chars(line.rstrip('\n')))
if line.endswith('\n'):
if self.linenos:
self._write_lineno(outfile)
self._linelen = 0
else:
outfile.write('\n')
self._linelen = 0
outfile.write('\n.fi')