|
|
# 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 or any later version.
|
|
|
#
|
|
|
# The original module was split in an interface and an implementation
|
|
|
# file to defer pygments loading and speedup extension setup.
|
|
|
|
|
|
from __future__ import absolute_import
|
|
|
|
|
|
from mercurial import demandimport
|
|
|
|
|
|
demandimport.IGNORES.update([b'pkgutil', b'pkg_resources', b'__main__'])
|
|
|
|
|
|
from mercurial import (
|
|
|
encoding,
|
|
|
pycompat,
|
|
|
)
|
|
|
|
|
|
from mercurial.utils import stringutil
|
|
|
|
|
|
with demandimport.deactivated():
|
|
|
import pygments
|
|
|
import pygments.formatters
|
|
|
import pygments.lexers
|
|
|
import pygments.plugin
|
|
|
import pygments.util
|
|
|
|
|
|
for unused in pygments.plugin.find_plugin_lexers():
|
|
|
pass
|
|
|
|
|
|
highlight = pygments.highlight
|
|
|
ClassNotFound = pygments.util.ClassNotFound
|
|
|
guess_lexer = pygments.lexers.guess_lexer
|
|
|
guess_lexer_for_filename = pygments.lexers.guess_lexer_for_filename
|
|
|
TextLexer = pygments.lexers.TextLexer
|
|
|
HtmlFormatter = pygments.formatters.HtmlFormatter
|
|
|
|
|
|
SYNTAX_CSS = (
|
|
|
b'\n<link rel="stylesheet" href="{url}highlightcss" type="text/css" />'
|
|
|
)
|
|
|
|
|
|
|
|
|
def pygmentize(field, fctx, style, tmpl, guessfilenameonly=False):
|
|
|
|
|
|
# append a <link ...> to the syntax highlighting css
|
|
|
tmpl.load(b'header')
|
|
|
old_header = tmpl.cache[b'header']
|
|
|
if SYNTAX_CSS not in old_header:
|
|
|
new_header = old_header + SYNTAX_CSS
|
|
|
tmpl.cache[b'header'] = new_header
|
|
|
|
|
|
text = fctx.data()
|
|
|
if stringutil.binary(text):
|
|
|
return
|
|
|
|
|
|
# str.splitlines() != unicode.splitlines() because "reasons"
|
|
|
for c in b"\x0c", b"\x1c", b"\x1d", b"\x1e":
|
|
|
if c in text:
|
|
|
text = text.replace(c, b'')
|
|
|
|
|
|
# Pygments is best used with Unicode strings:
|
|
|
# <http://pygments.org/docs/unicode/>
|
|
|
text = text.decode(pycompat.sysstr(encoding.encoding), 'replace')
|
|
|
|
|
|
# To get multi-line strings right, we can't format line-by-line
|
|
|
try:
|
|
|
path = pycompat.sysstr(fctx.path())
|
|
|
lexer = guess_lexer_for_filename(path, text[:1024], stripnl=False)
|
|
|
except (ClassNotFound, ValueError):
|
|
|
# guess_lexer will return a lexer if *any* lexer matches. There is
|
|
|
# no way to specify a minimum match score. This can give a high rate of
|
|
|
# false positives on files with an unknown filename pattern.
|
|
|
if guessfilenameonly:
|
|
|
return
|
|
|
|
|
|
try:
|
|
|
lexer = guess_lexer(text[:1024], stripnl=False)
|
|
|
except (ClassNotFound, ValueError):
|
|
|
# Don't highlight unknown files
|
|
|
return
|
|
|
|
|
|
# Don't highlight text files
|
|
|
if isinstance(lexer, TextLexer):
|
|
|
return
|
|
|
|
|
|
formatter = HtmlFormatter(nowrap=True, style=pycompat.sysstr(style))
|
|
|
|
|
|
colorized = highlight(text, lexer, formatter)
|
|
|
coloriter = (
|
|
|
s.encode(pycompat.sysstr(encoding.encoding), 'replace')
|
|
|
for s in colorized.splitlines()
|
|
|
)
|
|
|
|
|
|
tmpl._filters[b'colorize'] = lambda x: next(coloriter)
|
|
|
|
|
|
oldl = tmpl.cache[field]
|
|
|
newl = oldl.replace(b'line|escape', b'line|colorize')
|
|
|
tmpl.cache[field] = newl
|
|
|
|
