update.py 文件源码

def get_desktop(self, key, translated=True):
        # strip away bogus prefixes
        if key.startswith("X-AppInstall-"):
            key = key[len("X-AppInstall-"):]
        # shortcut
        if not translated:
            return self.tag_section[key]
        # FIXME: make i18n work similar to get_desktop
        # first try dgettext
        if "Gettext-Domain" in self.tag_section:
            value = self.tag_section.get(key)
            if value:
                domain = self.tag_section["Gettext-Domain"]
                translated_value = gettext.dgettext(domain, value)
                if value != translated_value:
                    return translated_value
        # then try the i18n version of the key (in [de_DE] or
        # [de]) but ignore errors and return the untranslated one then
        try:
            locale = getdefaultlocale(('LANGUAGE', 'LANG', 'LC_CTYPE',
                'LC_ALL'))[0]
            if locale:
                if self.has_option_desktop("%s-%s" % (key, locale)):
                    return self.tag_section["%s-%s" % (key, locale)]
                if "_" in locale:
                    locale_short = locale.split("_")[0]
                    if self.has_option_desktop("%s-%s" % (key, locale_short)):
                        return self.tag_section["%s-%s" % (key, locale_short)]
        except ValueError:
            pass
        # and then the untranslated field
        return self.tag_section[key]