hgext/highlight/__init__.py
author Patrick Mezard <pmezard@gmail.com>
Mon, 13 Apr 2009 16:15:45 +0200
changeset 8063 ee8d9b93b316
parent 7216 292fb2ad2846
child 8251 7fc30044b514
permissions -rw-r--r--
convert/p4: win32 fixes * cmd.exe does not know single quotes * win32 does not like trailing whitespace very much. Trade test coverage for maintenance time and drop the trailing whitespaces tests.

"""syntax highlighting in hgweb, based on Pygments

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

To enable the extension add this to hgrc:

[extensions]
hgext.highlight =

There is a single configuration option:

[web]
pygments_style = <style>

The default is 'colorful'.

-- Adam Hupp <adam@hupp.org>
"""

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

def filerevision_highlight(orig, web, tmpl, fctx):
    mt = ''.join(tmpl('mimetype', encoding=web.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=web.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')