|
|
- # -*- coding: utf-8 -*-
- """
- pygments.modeline
- ~~~~~~~~~~~~~~~~~
-
- A simple modeline parser (based on pymodeline).
-
- :copyright: Copyright 2006-2019 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
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