view hgext/highlight/__init__.py @ 9021:2ccb527c7b1a

gendoc: fix localization of help topic

When a topic provides a callable method for its text, most likely
this text will be generated from different parts, so it does not
make sense to apply gettext on the whole result, rather the method
should provide translation by itself.

This is the case with the extensions topic, which triggers a double
gettext call, making the ASCII codec fail when it encounters 8 bit
characters, and prevents the documentation from being built.

# highlight - syntax highlighting in hgweb, based on Pygments
#
#  Copyright 2008, 2009 Patrick Mezard <[e-mail]> 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.
#
# The original module was split in an interface and an implementation
# file to defer pygments loading and speedup extension setup.

"""syntax highlighting for hgweb (requires Pygments)

It depends on the Pygments syntax highlighting library:
http://pygments.org/

There is a single configuration option:

[web]
pygments_style = <style>

The default is 'colorful'.
"""

import highlight
from mercurial.hgweb import webcommands, webutil, common
from mercurial import extensions, encoding

def filerevision_highlight(orig, web, tmpl, fctx):
    mt = ''.join(tmpl('mimetype', encoding=encoding.encoding))
    # only pygmentize for mimetype containing 'html' so we both match
    # 'text/html' and possibly 'application/xhtml+xml' in the future
    # so that we don't have to touch the extension when the mimetype
    # for a template changes; also hgweb optimizes the case that a
    # raw file is sent using rawfile() and doesn't call us, so we
    # can't clash with the file's content-type here in case we
    # pygmentize a html file
    if 'html' in mt:
        style = web.config('web', 'pygments_style', 'colorful')
        highlight.pygmentize('fileline', fctx, style, tmpl)
    return orig(web, tmpl, fctx)

def annotate_highlight(orig, web, req, tmpl):
    mt = ''.join(tmpl('mimetype', encoding=encoding.encoding))
    if 'html' in mt:
        fctx = webutil.filectx(web.repo, req)
        style = web.config('web', 'pygments_style', 'colorful')
        highlight.pygmentize('annotateline', fctx, style, tmpl)
    return orig(web, req, tmpl)

def generate_css(web, req, tmpl):
    pg_style = web.config('web', 'pygments_style', 'colorful')
    fmter = highlight.HtmlFormatter(style = pg_style)
    req.respond(common.HTTP_OK, 'text/css')
    return ['/* pygments_style = %s */\n\n' % pg_style, fmter.get_style_defs('')]

# monkeypatch in the new version
extensions.wrapfunction(webcommands, '_filerevision', filerevision_highlight)
extensions.wrapfunction(webcommands, 'annotate', annotate_highlight)
webcommands.highlightcss = generate_css
webcommands.__all__.append('highlightcss')