#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# rst — xml-rpc-based ikiwiki plugin to process RST files
#
# based a little bit on rst.pm by Sergio Talens-Oliag, but only a little bit. :)
#
# Copyright © 2007-2008 martin f. krafft <madduck@madduck.net>
#             2007-2011 Joey Hess <joey@kitenet.net>
#             2009      Ulrik Sverdrup <ulrik.sverdrup@gmail.com>
#             2011      Simon McVittie <smcv@debian.org>
#             2012      W. Trevor King <wking@tremily.us>
#
#  Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
# .
# THIS SOFTWARE IS PROVIDED BY IKIWIKI AND CONTRIBUTORS ``AS IS''
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION
# OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
__name__ = 'rst'
__description__ = 'xml-rpc-based ikiwiki plugin to process RST files'
__version__ = '0.4'
__author__ = 'martin f. krafft <madduck@madduck.net>'
__copyright__ = 'Copyright © ' + __author__
__licence__ = 'BSD-2-clause'

import sys as _sys

from proxy import IkiWikiProcedureProxy


publish_parts = None


def rst2html(proxy, *args):
    # delayed import so docutils is only needed if you *use* rst -
    # http://bugs.debian.org/637604
    global publish_parts
    if publish_parts is None:
        try:
            from docutils.core import publish_parts
        except ImportError as e:
            proxy.error('cannot import docutils.core: {0}: {1}'.format(
                    e.__class__.__name__, e))
            raise

    kwargs = _to_dict(args)
    parts = publish_parts(kwargs["content"],
                          writer_name="html",
                          settings_overrides = { 'halt_level': 6
                                               , 'file_insertion_enabled': 0
                                               , 'raw_enabled': 1
                                               })
    return '\n'.join(parts['html_body'].splitlines()[1:-1])

def _to_dict(args):
    # args is a list paired by key, value, so we turn it into a dict
    return dict((k, v) for k, v in zip(*[iter(args)]*2))

def getsetup(proxy, *kwargs):
    return 'plugin', { 'safe' : 1, 'rebuild' : 1, 'section' : 'format' }

def debug(s):
    _sys.stderr.write(__name__ + ':DEBUG:{0}\n'.format(s))
    _sys.stderr.flush()

proxy = IkiWikiProcedureProxy(__name__, debug_fn=None)
proxy.hook('getsetup', getsetup)
proxy.hook('htmlize', rst2html)
proxy.run()
