Extract revision ids from changeset and make link from them

    """

    urlify_changeset_replace = _urlify_changeset_replace_f(repo_name)

    return re.sub(urilify_changeset_re, urlify_changeset_replace, text_)

def linkify_others(t, l):

    """Add a default link to html with links.

    HTML doesn't allow nesting of links, so the outer link must be broken up

    in pieces and give space for other links.

    """

    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)

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

    """

    Parses given text message and makes proper links.

    Issues are linked to given issue-server. If link_ is provided, all other

    text will link there.

    """

    newtext = html_escape(text_)

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

    newtext = urlify_changesets(newtext, repo_name)

    # extract http/https links and make them real urls

    newtext = _urlify_text(newtext)

    newtext = urlify_issues(newtext, repo_name, link_)

    return literal(newtext)

def _urlify_issues_replace_f(repo_name, ISSUE_SERVER_LNK, ISSUE_PREFIX):

    def urlify_issues_replace(match_obj):

        pref = ''

        if match_obj.group().startswith(' '):

            pref = ' '

        issue_id = ''.join(match_obj.groups())

        issue_url = ISSUE_SERVER_LNK.replace('{id}', issue_id)

        return (

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

            '%(issue-prefix)s%(id-repr)s'

            '</a>'

            ) % {

             'pref': pref,

             'cls': 'issue-tracker-link',

             'url': issue_url,

             'id-repr': issue_id,

             'issue-prefix': ISSUE_PREFIX,

             'serv': ISSUE_SERVER_LNK,

            }

    return urlify_issues_replace

def urlify_issues(newtext, repo_name, link_=None):

    from kallithea import CONFIG as conf

    # allow multiple issue servers to be used

    valid_indices = [

        x.group(1)

        for x in map(lambda x: re.match(r'issue_pat(.*)', x), conf.keys())

        if x and 'issue_server_link%s' % x.group(1) in conf

        and 'issue_prefix%s' % x.group(1) in conf

    ]

    if valid_indices:

        log.debug('found issue server suffixes `%s` during valuation of: %s',

                  ','.join(valid_indices), newtext)

    for pattern_index in valid_indices:

        ISSUE_PATTERN = conf.get('issue_pat%s' % pattern_index)

        ISSUE_SERVER_LNK = conf.get('issue_server_link%s' % pattern_index)

        ISSUE_PREFIX = conf.get('issue_prefix%s' % pattern_index)

        log.debug('pattern suffix `%s` PAT:%s SERVER_LINK:%s PREFIX:%s',

                  pattern_index, ISSUE_PATTERN, ISSUE_SERVER_LNK,

                  ISSUE_PREFIX)

        URL_PAT = re.compile(ISSUE_PATTERN)

        urlify_issues_replace = _urlify_issues_replace_f(repo_name, ISSUE_SERVER_LNK, ISSUE_PREFIX)

        newtext = URL_PAT.sub(urlify_issues_replace, newtext)

        log.debug('processed prefix:`%s` => %s', pattern_index, newtext)

    # if we actually did something above

    if link_: