p_sum = a_p + d_p

    if p_sum > width:

        #adjust the percentage to be == 100% since we adjusted to 9

        if a_p > d_p:

            a_p = a_p - (p_sum - width)

        else:

            d_p = d_p - (p_sum - width)

    a_v = a if a > 0 else ''

    d_v = d if d > 0 else ''

    d_a = '<div class="added %s" style="width:%s%%">%s</div>' % (

        cgen('a', a_v, d_v), a_p, a_v

    )

    d_d = '<div class="deleted %s" style="width:%s%%">%s</div>' % (

        cgen('d', a_v, d_v), d_p, d_v

    )

    return literal('<div style="width:%spx">%s%s</div>' % (width, d_a, d_d))

def urlify_text(text_, safe=True):

    """

    Extrac urls from text and make html links out of them

    :param 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})

    _newtext = url_pat.sub(url_func, text_)

    if safe:

        return literal(_newtext)

    return _newtext

def urlify_changesets(text_, repository):

    """

    Extract revision ids from changeset and make link from them

    :param text_:

    :param repository: repo name to build the URL with

    """

    from pylons import url  # doh, we need to re-import url to mock it later

    def url_func(match_obj):

        tmpl = (

        '%(pref)s<a class="%(cls)s" href="%(url)s">'

        )

        return tmpl % {

         'pref': pref,

         'cls': 'revision-link',

         'url': url('changeset_home', repo_name=repository, revision=rev),

         'rev': rev,

         'suf': suf

        }

    newtext = URL_PAT.sub(url_func, text_)

    return newtext

def urlify_commit(text_, repository=None, link_=None):

    """

    Parses given text message and makes proper links.

    issues are linked to given issue-server, and rest is a changeset link

    if link_ is given, in other case it's a plain text

    :param text_:

    :param repository:

    :param link_: changeset link

    """

    import traceback

    from pylons import url  # doh, we need to re-import url to mock it later

    def escaper(string):

        return string.replace('<', '&lt;').replace('>', '&gt;')

    def linkify_others(t, l):

        urls = re.compile(r'(\<a.*?\<\/a\>)',)

        links = []

        for e in urls.split(t):

            if not urls.match(e):

                links.append('<a class="message-link" href="%s">%s</a>' % (l, e))

            else:

                links.append(e)

        return ''.join(links)

    # urlify changesets - extrac revisions and make link out of them

    newtext = urlify_changesets(escaper(text_), repository)

    # extract http/https links and make them real urls

    newtext = urlify_text(newtext, safe=False)

    try:

    def test_alternative_gravatar(self):

        from rhodecode.lib.helpers import gravatar_url

        _md5 = lambda s: hashlib.md5(s).hexdigest()

        def fake_conf(**kwargs):

            from pylons import config

            config['app_conf'] = {}

            config['app_conf']['use_gravatar'] = True

            config['app_conf'].update(kwargs)

            return config

        class fake_url():

            @classmethod

            def current(cls, *args, **kwargs):

                return 'https://server.com'

        with mock.patch('pylons.url', fake_url):

            fake = fake_conf(alternative_gravatar_url='http://test.com/{email}')

            with mock.patch('pylons.config', fake):

                    from pylons import url

                    assert url.current() == 'https://server.com'

                    grav = gravatar_url(email_address='test@foo.com', size=24)

                    assert grav == 'http://test.com/test@foo.com'

            fake = fake_conf(alternative_gravatar_url='http://test.com/{email}')

            with mock.patch('pylons.config', fake):

                grav = gravatar_url(email_address='test@foo.com', size=24)

                assert grav == 'http://test.com/test@foo.com'

            fake = fake_conf(alternative_gravatar_url='http://test.com/{md5email}')

            with mock.patch('pylons.config', fake):

                em = 'test@foo.com'

                grav = gravatar_url(email_address=em, size=24)

                assert grav == 'http://test.com/%s' % (_md5(em))

            fake = fake_conf(alternative_gravatar_url='http://test.com/{md5email}/{size}')

            with mock.patch('pylons.config', fake):

                em = 'test@foo.com'

                grav = gravatar_url(email_address=em, size=24)

                assert grav == 'http://test.com/%s/%s' % (_md5(em), 24)

            fake = fake_conf(alternative_gravatar_url='{scheme}://{netloc}/{md5email}/{size}')

            with mock.patch('pylons.config', fake):

                em = 'test@foo.com'

                grav = gravatar_url(email_address=em, size=24)

                assert grav == 'https://server.com/%s/%s' % (_md5(em), 24)

    @parameterized.expand([

      ("",

       ""),

      ("git-svn-id: https://svn.apache.org/repos/asf/libcloud/trunk@1441655 13f79535-47bb-0310-9956-ffa450edef68",

       "git-svn-id: https://svn.apache.org/repos/asf/libcloud/trunk@1441655 13f79535-47bb-0310-9956-ffa450edef68"),

      ("from rev 000000000000",

       "from rev url[000000000000]"),

      ("from rev 000000000000123123 also rev 000000000000",

       "from rev url[000000000000123123] also rev url[000000000000]"),

      ("this should-000 00",

       "this should-000 00"),

      ("longtextffffffffff rev 123123123123",

       "longtextffffffffff rev url[123123123123]"),

      ("rev ffffffffffffffffffffffffffffffffffffffffffffffffff",

       "rev ffffffffffffffffffffffffffffffffffffffffffffffffff"),

      ("ffffffffffff some text traalaa",

       "url[ffffffffffff] some text traalaa"),

       ("""Multi line

       123123123123

       """Multi line

       url[123123123123]

    ])

    def test_urlify_changesets(self, sample, expected):

        def fake_url(self, *args, **kwargs):

            return '/some-url'

        with mock.patch('pylons.url', fake_url):

            from rhodecode.lib.helpers import urlify_changesets

            self.assertEqual(urlify_changesets(sample, 'repo_name'), expected)