if MarkupRenderer.MARKDOWN_PAT.findall(filename):

            detected_renderer = 'markdown'

        elif MarkupRenderer.RST_PAT.findall(filename):

            detected_renderer = 'rst'

        elif MarkupRenderer.PLAIN_PAT.findall(filename):

            detected_renderer = 'rst'

        else:

            detected_renderer = 'plain'

        return getattr(MarkupRenderer, detected_renderer)

    def render(self, source, filename=None):

        """

        Renders a given filename using detected renderer

        it detects renderers based on file extension or mimetype.

        At last it will just do a simple html replacing new lines with <br/>

        :param file_name:

        :param source:

        """

        renderer = self.__detect_renderer(source, filename)

        readme_data = renderer(source)

        return readme_data

    @classmethod

    def plain(cls, source):

        source = safe_unicode(source)

        def urlify_text(text):

            url_pat = re.compile(r'(http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]'

                                 '|[!*\(\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+)')

            def url_func(match_obj):

                url_full = match_obj.groups()[0]

                return '<a href="%(url)s">%(url)s</a>' % ({'url': url_full})

            return url_pat.sub(url_func, text)

        source = urlify_text(source)

        return '<br />' + source.replace("\n", '<br />')

    @classmethod

    def markdown(cls, source, safe=True):

        source = safe_unicode(source)

        try:

            import markdown as __markdown

        except ImportError:

            log.warning('Install markdown to use this function')

            return cls.plain(source)

        except Exception:

            log.error(traceback.format_exc())

            if safe:

                return source

            else:

                raise

    @classmethod

    def rst(cls, source, safe=True):

        source = safe_unicode(source)

        try:

            from docutils.core import publish_parts

            from docutils.parsers.rst import directives

            docutils_settings = dict([(alias, None) for alias in

                                cls.RESTRUCTUREDTEXT_DISALLOWED_DIRECTIVES])

            docutils_settings.update({'input_encoding': 'unicode',

                                      'report_level': 4})

            for k, v in docutils_settings.iteritems():

                directives.register_directive(k, v)

            parts = publish_parts(source=source,

                                  writer_name="html4css1",

                                  settings_overrides=docutils_settings)

            return parts['html_title'] + parts["fragment"]

        except ImportError:

            log.warning('Install docutils to use this function')

            return cls.plain(source)

        except Exception:

            log.error(traceback.format_exc())

            if safe:

                return source

            else:

                raise

    @classmethod

    def rst_with_mentions(cls, source):

        mention_pat = re.compile(MENTIONS_REGEX)

        def wrapp(match_obj):

            uname = match_obj.groups()[0]

            return ' **@%(uname)s** ' % {'uname': uname}

        mention_hl = mention_pat.sub(wrapp, source).strip()

color: black !important;

margin: 1em 0 !important;

line-height: 1.5em !important;

}

div.readme .readme_box ul {

list-style: disc !important;

margin: 1em 0 1em 2em !important;

}

div.readme .readme_box ol {

list-style: decimal;

margin: 1em 0 1em 2em !important;

}

div.readme .readme_box pre, code {

font: 12px "Bitstream Vera Sans Mono","Courier",monospace;

}

div.readme .readme_box code {

    font-size: 12px !important;

    background-color: ghostWhite !important;

    color: #444 !important;

    padding: 0 .2em !important;

    border: 1px solid #dedede !important;

}

div.readme .readme_box pre code {

	padding: 0 !important;

	font-size: 12px !important;

	background-color: #eee !important;

	border: none !important;

}

div.readme .readme_box pre {

	margin: 1em 0;

	font-size: 12px;

	background-color: #eee;

	border: 1px solid #ddd;

	padding: 5px;

	color: #444;

	overflow: auto;

	-webkit-box-shadow: rgba(0,0,0,0.07) 0 1px 2px inset;

	-webkit-border-radius: 3px;

	-moz-border-radius: 3px;

	border-radius: 3px;

}

/** RST STYLE **/

div.rst-block {

    padding:0px;

}

div.rst-block h2 {

    font-weight: normal;

}

div.rst-block  {

    background-color: #fafafa;

}

div.rst-block  {

clear:both;

overflow:hidden;

margin:0;

padding:0 20px 10px;

}

div.rst-block  h1, div.rst-block  h2, div.rst-block  h3, div.rst-block  h4, div.rst-block  h5, div.rst-block  h6 {

border-bottom: 0 !important;

margin: 0 !important;

padding: 0 !important;

line-height: 1.5em !important;

}

div.rst-block  h1:first-child {

padding-top: .25em !important;

}

div.rst-block  h2, div.rst-block  h3 {

margin: 1em 0 !important;

}

div.rst-block  h2 {

margin-top: 1.5em !important;

border-top: 4px solid #e0e0e0 !important;

padding-top: .5em !important;

}

div.rst-block  p {

color: black !important;

margin: 1em 0 !important;