wget.py 文件源码

def _check_latest_version_by_dir(self, dirver, package, package_regex,
            current_version, ud, d):
        """
            Scan every directory in order to get upstream version.
        """
        version_dir = ['', '', '']
        version = ['', '', '']

        dirver_regex = re.compile("(?P<pfx>\D*)(?P<ver>(\d+[\.\-_])+(\d+))")
        s = dirver_regex.search(dirver)
        if s:
            version_dir[1] = s.group('ver')
        else:
            version_dir[1] = dirver

        dirs_uri = bb.fetch.encodeurl([ud.type, ud.host,
                ud.path.split(dirver)[0], ud.user, ud.pswd, {}])
        bb.debug(3, "DirURL: %s, %s" % (dirs_uri, package))

        soup = BeautifulSoup(self._fetch_index(dirs_uri, ud, d), "html.parser", parse_only=SoupStrainer("a"))
        if not soup:
            return version[1]

        for line in soup.find_all('a', href=True):
            s = dirver_regex.search(line['href'].strip("/"))
            if s:
                sver = s.group('ver')

                # When prefix is part of the version directory it need to
                # ensure that only version directory is used so remove previous
                # directories if exists.
                #
                # Example: pfx = '/dir1/dir2/v' and version = '2.5' the expected
                # result is v2.5.
                spfx = s.group('pfx').split('/')[-1]

                version_dir_new = ['', sver, '']
                if self._vercmp(version_dir, version_dir_new) <= 0:
                    dirver_new = spfx + sver
                    path = ud.path.replace(dirver, dirver_new, True) \
                        .split(package)[0]
                    uri = bb.fetch.encodeurl([ud.type, ud.host, path,
                        ud.user, ud.pswd, {}])

                    pupver = self._check_latest_version(uri,
                            package, package_regex, current_version, ud, d)
                    if pupver:
                        version[1] = pupver

                    version_dir = version_dir_new

        return version[1]