# encoding: utf-8

#

# Copyright (c) 2013 Dariusz Dwornikowski.  All rights reserved.

#

# Adapted from https://github.com/tdi/sphinxcontrib-manpage

# License: Apache 2

#

import re

from docutils import nodes, utils

from docutils.parsers.rst.roles import set_classes

from string import Template

def make_link_node(rawtext, app, name, manpage_num, options):

    ref = app.config.man_url_regex

    if not ref:

        ref = "http://man7.org/linux/man-pages/man%s/%s.%s.html" %(manpage_num, name, manpage_num)

    else:

        s = Template(ref)

        ref = s.substitute(num=manpage_num, topic=name)

    set_classes(options)

    node = nodes.reference(rawtext, "%s(%s)" % (name, manpage_num), refuri=ref, **options)

    return node

def man_role(name, rawtext, text, lineno, inliner, options={}, content=[]):

    app = inliner.document.settings.env.app

    p = re.compile("([a-zA-Z0-9_\.-_]+)\((\d)\)")

    m = p.match(text)

    manpage_num = m.group(2)

    name = m.group(1)

    node = make_link_node(rawtext, app, name, manpage_num, options)

    return [node], []

def setup(app):

    app.add_role('man', man_role)

    app.add_config_value('man_url_regex', None, 'env')

    return