categories.py 文件源码

def _parse_menu_tag(self, item):
        name = None
        untranslated_name = None
        query = None
        icon = None
        only_unallocated = False
        dont_display = False
        flags = []
        subcategories = []
        sortmode = SortMethods.BY_ALPHABET
        item_limit = 0
        for element in item.getchildren():
            # ignore inline translations, we use gettext for this
            if (element.tag == "Name" and
                '{http://www.w3.org/XML/1998/namespace}lang' in
                element.attrib):
                continue
            if element.tag == "Name":
                untranslated_name = element.text
                # gettext/xml writes stuff from software-center.menu
                # out into the pot as escaped xml, so we need to escape
                # the name first, get the translation and unscape it again
                escaped_name = xml_escape(untranslated_name)
                name = xml_unescape(gettext.gettext(escaped_name))
            elif element.tag == "SCIcon":
                icon = element.text
            elif element.tag == 'Flags':
                flags = self._parse_flags_tag(element)
            elif element.tag == "Directory":
                l = self._parse_directory_tag(element)
                if l:
                    (untranslated_name, name, gettext_domain, icon) = l
            elif element.tag == "Include":
                query = self._parse_include_tag(element)
            elif element.tag == "OnlyUnallocated":
                only_unallocated = True
            elif element.tag == "SCDontDisplay":
                dont_display = True
            elif element.tag == "SCSortMode":
                sortmode = int(element.text)
                if not self._verify_supported_sort_mode(sortmode):
                    return None
            elif element.tag == "SCItemLimit":
                item_limit = int(element.text)
            elif element.tag == "Menu":
                subcat = self._parse_menu_tag(element)
                if subcat:
                    subcategories.append(subcat)
            else:
                LOG.warn("UNHANDLED tag in _parse_menu_tag: %s" % element.tag)

        if untranslated_name and query:
            return Category(untranslated_name, name, icon, query,
                only_unallocated, dont_display, flags, subcategories,
                sortmode, item_limit)
        else:
            LOG.warn("UNHANDLED entry: %s %s %s %s" % (name,
                                                       untranslated_name,
                                                       icon,
                                                       query))
        return None