highlight.py
62 lines
| 2.2 KiB
| text/x-python
|
PythonLexer
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r8251 | # highlight.py - highlight extension implementation file | ||
# | ||||
# Copyright 2007-2009 Adam Hupp <adam@hupp.org> and others | ||||
# | ||||
# This software may be used and distributed according to the terms of the | ||||
# GNU General Public License version 2, incorporated herein by reference. | ||||
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r6938 | # | ||
# The original module was split in an interface and an implementation | ||||
# file to defer pygments loading and speedup extension setup. | ||||
from mercurial import demandimport | ||||
demandimport.ignore.extend(['pkgutil', 'pkg_resources', '__main__',]) | ||||
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r7948 | from mercurial import util, encoding | ||
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r6938 | from mercurial.templatefilters import filters | ||
from pygments import highlight | ||||
from pygments.util import ClassNotFound | ||||
from pygments.lexers import guess_lexer, guess_lexer_for_filename, TextLexer | ||||
from pygments.formatters import HtmlFormatter | ||||
SYNTAX_CSS = ('\n<link rel="stylesheet" href="{url}highlightcss" ' | ||||
'type="text/css" />') | ||||
def pygmentize(field, fctx, style, tmpl): | ||||
# append a <link ...> to the syntax highlighting css | ||||
old_header = ''.join(tmpl('header')) | ||||
if SYNTAX_CSS not in old_header: | ||||
new_header = old_header + SYNTAX_CSS | ||||
tmpl.cache['header'] = new_header | ||||
text = fctx.data() | ||||
if util.binary(text): | ||||
return | ||||
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r7120 | # avoid UnicodeDecodeError in pygments | ||
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r7948 | text = encoding.tolocal(text) | ||
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r7120 | |||
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r6938 | # To get multi-line strings right, we can't format line-by-line | ||
try: | ||||
lexer = guess_lexer_for_filename(fctx.path(), text[:1024], | ||||
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r7948 | encoding=encoding.encoding) | ||
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r6938 | except (ClassNotFound, ValueError): | ||
try: | ||||
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r7948 | lexer = guess_lexer(text[:1024], encoding=encoding.encoding) | ||
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r6938 | except (ClassNotFound, ValueError): | ||
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r7948 | lexer = TextLexer(encoding=encoding.encoding) | ||
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r6938 | |||
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r7948 | formatter = HtmlFormatter(style=style, encoding=encoding.encoding) | ||
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r6938 | |||
colorized = highlight(text, lexer, formatter) | ||||
# strip wrapping div | ||||
colorized = colorized[:colorized.find('\n</pre>')] | ||||
colorized = colorized[colorized.find('<pre>')+5:] | ||||
coloriter = iter(colorized.splitlines()) | ||||
filters['colorize'] = lambda x: coloriter.next() | ||||
oldl = tmpl.cache[field] | ||||
newl = oldl.replace('line|escape', 'line|colorize') | ||||
tmpl.cache[field] = newl | ||||