Курсовой проект Web-Сайт / venv / Lib / site-packages / pip / _vendor / pygments / modeline

"""
pygments.modeline
~~~~~~~~~~~~~~~~~

A simple modeline parser (based on pymodeline).

:copyright: Copyright 2006-2023 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""

import re

__all__ = ['get_filetype_from_buffer']


modeline_re = re.compile(r'''
(?: vi | vim | ex ) (?: [<=>]? \d* )? :
.* (?: ft | filetype | syn | syntax ) = ( [^:\s]+ )
''', re.VERBOSE)


def get_filetype_from_line(l):
m = modeline_re.search(l)
if m:
return m.group(1)


def get_filetype_from_buffer(buf, max_lines=5):
"""
Scan the buffer for modelines and return filetype if one is found.
"""
lines = buf.splitlines()
for l in lines[-1:-max_lines-1:-1]:
ret = get_filetype_from_line(l)
if ret:
return ret
for i in range(max_lines, -1, -1):
if i < len(lines):
ret = get_filetype_from_line(lines[i])
if ret:
return ret

return None