# -*- coding: utf-8 -*-

# Copyright(C) 2010  Romain Bignon, Christophe Benz
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, version 3 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.


from html5lib import treebuilders, HTMLParser
try:
    from xml.etree import cElementTree as ElementTree
except ImportError:
    from xml.etree import ElementTree

from .iparser import IParser


__all__ = ['Html5libParser']


class Html5libParser(HTMLParser, IParser):
    """
    Parser using html5lib.

    Note that it is not available on every systems.
    """

    # Default implementation for each type of API.
    defaults = {'etree': ElementTree,
               }
    def __init__(self, api='etree'):
        # if no default implementation is defined for this api, set it to None
        # to let getTreeBuilder() using the corresponding implementation.
        implementation = self.defaults.get(api, None)
        HTMLParser.__init__(self, tree=treebuilders.getTreeBuilder(api, implementation))

    def parse(self, data, encoding):
        return HTMLParser.parse(self, data, encoding=encoding)

    def tostring(self, element):
        return element.toxml()