rana-cli/wakatime/packages/pygments2/pygments/modeline.py

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# -*- coding: utf-8 -*-
"""
pygments.modeline
~~~~~~~~~~~~~~~~~
A simple modeline parser (based on pymodeline).
:copyright: Copyright 2006-2013 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 l in lines[max_lines:0:-1]:
ret = get_filetype_from_line(l)
if ret:
return ret
return None