portage.py 文件源码

def sanity_check(repo, category, name, vernum, suff, rev, slot, ver=None):
    """
    Checks whether a package descriptor is valid and corresponds
    to a package in a configured portage repository
    """
    if not name:
        return False
    if repo and repo not in list(portage_repos()):
        return False
    if not ver:
        if (rev or suff) and not vernum:
            return False
        if vernum:
            ver = ver_str(vernum, suff, rev)
        else:
            ver = None
    pkgs = repo_pkgs(repo, category, name, ver, slot)
    if not pkgs:
        return False
    pkg = sorted(pkgs, key=cmp_to_key(lambda x,y:vercmp(x[3],y[3])), reverse=True)[0]
    return PortagePackage(*pkg)